1111 比较麻烦的最短路
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 505;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)struct Node{int to, nx, di, ti;
}E[N*N*2];
int head[N], tot;
void add(int fr, int to, int di, int ti) {E[tot].to = to; E[tot].di = di; E[tot].ti = ti; E[tot].nx = head[fr];head[fr] = tot ++;
}
vector<int> ans1; int Ans1;
vector<int> ans2; int Ans2;struct Hode{int po, di, ti;Hode(int a=0, int b=0, int c=0):po(a), di(b), ti(c){}bool operator < (const Hode & T) const {if(di != T.di) return di > T.di;else return ti > T.ti;}
};
struct Tode{int po, di, ti;Tode(int a=0, int b=0, int c=0):po(a), di(b), ti(c){}bool operator < (const Tode & T) const {if(ti != T.ti) return ti > T.ti;else return di > T.di;}
};int pre[N], vis[N];
int dis[N], tim[N];
void dfs1(int x, int tag) {if(x == tag) return;dfs1(pre[x], tag);ans1.push_back(x);
}
void dfs2(int x, int tag) {if(x == tag) return;dfs2(pre[x], tag);ans2.push_back(x);
}void dij1(int s, int t) {priority_queue<Hode> Q;memset(dis, INF, sizeof(dis));memset(tim, INF, sizeof(tim));dis[s] = 0; tim[s] = 0;memset(vis, 0, sizeof(vis));Q.push(Hode(s, dis[s], tim[s]));while(!Q.empty()) {int po = Q.top().po; Q.pop();if(vis[po]) continue;vis[po] = 1;for(int i = head[po]; ~i; i = E[i].nx) {int to = E[i].to;if(dis[to] > dis[po] + E[i].di) {dis[to] = dis[po] + E[i].di;tim[to] = tim[po] + E[i].ti;pre[to] = po;Q.push(Hode(to, dis[to], tim[to]));}else if(dis[to] == dis[po] + E[i].di && tim[to] > tim[po] + E[i].ti) {tim[to] = tim[po] + E[i].ti;pre[to] = po;Q.push(Hode(to, dis[to], tim[to]));} }}
// printf("Distance = %d: %d", dis[t], s);ans1.push_back(s); Ans1 = dis[t];dfs1(t, s);
// printf("\n");
}
void dij2(int s, int t) {priority_queue<Tode> Q;memset(dis, INF, sizeof(dis));memset(tim, INF, sizeof(tim));dis[s] = 0; tim[s] = 0;memset(vis, 0, sizeof(vis));Q.push(Tode(s, dis[s], tim[s]));while(!Q.empty()) {int po = Q.top().po; Q.pop();if(vis[po]) continue;vis[po] = 1;for(int i = head[po]; ~i; i = E[i].nx) {int to = E[i].to;if(tim[to] > tim[po] + E[i].ti) {dis[to] = dis[po] + 1;tim[to] = tim[po] + E[i].ti;pre[to] = po;Q.push(Tode(to, dis[to], tim[to]));}else if(tim[to] == tim[po] + E[i].ti && dis[to] > dis[po] + 1) {dis[to] = dis[po] + 1;pre[to] = po;Q.push(Tode(to, dis[to], tim[to]));} }}ans2.push_back(s); Ans2 = tim[t];dfs2(t, s);
}
int main() {int n, m;while(~scanf("%d %d", &n, &m)) {ans1.clear(); ans2.clear();memset(head, -1, sizeof(head));tot = 0;for(int i = 0; i < m; ++i) {int a, b, c, d, e; scanf("%d %d %d %d %d", &a, &b, &c, &d, &e);add(a, b, d, e);if(!c) add(b, a, d, e);}int s,t; scanf("%d %d", &s, &t);dij1(s, t);dij2(s, t);// if(s == t) while(1);int fl = 1;for(int i = 0; i < min(ans1.size(), ans2.size()); ++i) {if(ans1[i] != ans2[i]) {fl = 0; break;}}if(fl) {printf("Distance = %d; Time = %d: ", Ans1, Ans2);for(int i = 0; i < ans1.size(); ++i) {if(i) printf(" -> ");printf("%d", ans1[i]);} printf("\n");}else {printf("Distance = %d: ", Ans1);for(int i = 0; i < ans1.size(); ++i) {if(i) printf(" -> ");printf("%d", ans1[i]);}printf("\nTime = %d: ", Ans2);for(int i = 0; i < ans2.size(); ++i) {if(i) printf(" -> ");printf("%d", ans2[i]);}printf("\n");}}return 0;
}1112 gcd一下
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 505;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)char s[1005];
map<char, int> mp; int tot;
char table[40];
map<char, int> suc;
vector<int> vc[40];int gcd(int a, int b) {if(b == 0) return a;else return gcd(b, a%b);
}
int main() {int n;tot = 0;for(char i = 'a'; i <= 'z'; ++i) mp[i] = ++tot, table[tot] = i;for(char i = '0'; i <= '9'; ++i) mp[i] = ++tot, table[tot] = i;mp['_'] = ++tot; table[tot] = '_';while(~scanf("%d", &n)) {suc.clear();for(int i = 0; i < 40; ++i) vc[i].clear();scanf("%s", s);int len = strlen(s);int tmp = 0;for(int i = 0; i <= len; ++i) {if(i && s[i] != s[i-1]) {vc[mp[s[i-1]]].push_back(tmp);// printf("%c %d\n", s[i-1], tmp);tmp = 0;}tmp ++;}for(int i = 1; i <= tot; ++i) {if(vc[i].size() > 0) {// printf("%c ", table[i]); for(int j = 0; i < vc[i].size(); ++j) printf("%d ", vc[i][j]); printf("\n");int tt = vc[i][0];for(int j = 1; j < vc[i].size(); ++j) {tt = gcd(tt, vc[i][j]);}if(tt % n == 0) {// printf("%c\n",table[i]);suc[table[i]] = 1;}}}tmp = 0;for(int i = 0; i < len; ++i) {if(suc[s[i]] > 0) {suc[s[i]] = -1;printf("%c", s[i]);}} printf("\n");for(int i = 0; i <= len; ++i) {if(i && s[i] != s[i-1]) {if(suc[s[i-1]] == -1) {for(int j = 0; j < tmp/n; ++j) printf("%c", s[i-1]);}else for(int j = 0; j < tmp; ++j) printf("%c", s[i-1]);tmp = 0;}tmp ++;}printf("\n");}return 0;
}1113
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 1e5+5;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)int A[N];ll Abs(ll x) {if(x < 0) return -x;else return x;
}
int main() {int n;while(~scanf("%d", &n)) {ll all = 0;for(int i = 0; i < n; ++i) {scanf("%d", &A[i]);all += A[i];}sort(A, A+n);ll tmp = 0;for(int i = 0; i < n/2; ++i) {tmp += A[i];}ll ans = Abs(tmp - (all-tmp));if(n % 2) {tmp += A[n/2];ans = max(ans, Abs(tmp - (all-tmp)) );}printf("%d %lld\n", n%2, ans);}return 0;
}1114 题意不好理解 其实就是并查集
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 1e5+5;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)int f[N];
int find(int x) { return x == f[x]? x : f[x] = find(f[x]); }
void merge(int a, int b) {if(b == -1 || a == -1) return;int t1 = find(a); int t2 = find(b);if(t1 != t2) {if(t1 > t2) f[t1] = t2; else f[t2] = t1;}
}
int has[N];
int sett[N], area[N];
int cnt[N]; double avg_set[N], avg_area[N];
int ord[N];
int cmp(int x, int y) {if(avg_area[x] != avg_area[y]) return avg_area[x] > avg_area[y];else return x < y;
}
int main() {int n;while(~scanf("%d", &n)) {for(int i = 0; i < 1e5; ++i) f[i] = i;for(int i = 0; i < n; ++i) {int a,b,c; scanf("%d %d %d", &a, &b, &c);has[a] ++; has[b] ++; has[c] ++;merge(a, b); merge(a, c);int d; scanf("%d", &d);for(int j = 0; j < d; ++j) {int l; scanf("%d", &l);has[l] ++;merge(a, l);}scanf("%d %d", &sett[a], &area[a]);}
// printf("hh\n");for(int i = 0; i < 1e5; ++i) {if(has[i]) {int t1 = find(i);cnt[t1] ++; avg_set[t1] += sett[i]; avg_area[t1] += area[i];} }int tot = 0;for(int i = 0; i < 1e5; ++i) {if(cnt[i]) {avg_set[i] /= cnt[i]; avg_area[i] /= cnt[i];ord[tot ++] = i; }}sort(ord, ord + tot, cmp);printf("%d\n", tot);for(int i = 0; i < tot; ++i) {printf("%04d %d %.3f %.3f\n", ord[i], cnt[ord[i]], avg_set[ord[i]], avg_area[ord[i]]);}}return 0;
}1115
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 1e3+5;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)int num[N];
int L[N];
int R[N];
int root = 0;
void insert(int x, int nw) {if(root == -1) {root = x; return;}if(num[x] <= num[nw]) {if(L[nw]) insert(x, L[nw]);else L[nw] = x;}else {if(R[nw]) insert(x, R[nw]);else R[nw] = x;}
}
int cnt[N];
int Deep;
void dfs(int x, int dep) {Deep = max(Deep, dep);cnt[dep] ++;if(L[x]) dfs(L[x], dep+1);if(R[x]) dfs(R[x], dep+1);
}
int main() {int n;while(~scanf("%d", &n)) {root = -1;for(int i = 0; i < n; ++i) {scanf("%d", &num[i]);insert(i, root);}Deep = -1;dfs(root, 0);printf("%d + %d = %d\n", cnt[Deep], cnt[Deep-1], cnt[Deep] + cnt[Deep-1]);}return 0;
}1116
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 1e5+5;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)int Rank[N];
int has[N];
int prime(int x) {if(x == 1) return 0;if(x == 2) return 1;for(int i = 2; i <= sqrt(x); ++i) {if(x % i == 0) return 0;}return 1;
}
int main() {int n;while(~scanf("%d", &n)) {memset(has, 0, sizeof(has));for(int i = 0; i < n; ++i) {int a; scanf("%d", &a);Rank[a] = i+1;}int k; scanf("%d", &k);while(k--) {int a; scanf("%d", &a);if(has[a]) printf("%04d: Checked\n", a);else if(Rank[a] == 0) printf("%04d: Are you kidding?\n", a);else if(Rank[a] == 1) printf("%04d: Mystery Award\n", a);else if(prime(Rank[a])) printf("%04d: Minion\n", a);else printf("%04d: Chocolate\n", a);if(Rank[a]) has[a] = 1;}}return 0;
}1117这题题意也是扯淡啊，，，，
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 1e5+5;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)int a[N];
int main() {int n;while(~scanf("%d", &n)) {for(int i = 0; i < n; ++i) scanf("%d", &a[i]);sort(a, a+n);a[n] = INF;int ans = -1;for(int i = 0; i < n; ++i) {if(a[i] != a[i+1]) {ans = max(ans, min(n-i-1, a[i+1]-1) );}}ans = max(ans, min(n, a[0]-1));printf("%d\n", ans);}return 0;
}1118
include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 1e4+5;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)int fa[N];
int cnt[N];
int find(int x) { return x == fa[x]? x : fa[x] = find(fa[x]); }int main() {int n;while(~scanf("%d", &n)) {memset(cnt, 0, sizeof(cnt));for(int i = 1; i <= 1e4; ++i) fa[i] = i;int m = -1;for(int i = 1; i <= n; ++i) {int a; scanf("%d", &a);int pre;if(a) {scanf("%d", &pre);m = max(m, pre);}for(int j = 1; j < a; ++j) {int b; scanf("%d", &b);m = max(m, b);int t1 = find(pre); int t2 = find(b);if(t1 != t2) fa[t2] = t1;}}for(int i = 1; i <= m; ++i) {cnt[find(i)] ++;}int all = 0; int maxx = -1;for(int i = 1; i <= m; ++i) {if(cnt[i]) {all ++;maxx = max(maxx, cnt[i]);}}printf("%d %d\n", all, m);int k; scanf("%d", &k);for(int i = 0; i < k; ++i) {int a; int b; scanf("%d %d", &a, &b);int t1 = find(a); int t2 = find(b);if(t1 == t2) printf("Yes\n");else printf("No\n");}}return 0;
}1119 主要对于先后序的概念需要掌握
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 1e5+5;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)int pre[N];
int post[N];
int L[N], R[N];
int root;int fl = 1;void solve(int _l, int _r, int l, int r, int rt) {
// printf("%d %d %d %d %d\n", _l,_r,l,r,rt);if(l > r) return;int ro = pre[_l];int pos = 0;for(int i = l; i <= r; ++i) {if(post[i] == ro) {pos = i; break;}}if(pos == l && pos != r) {L[rt] = post[pos];R[rt] = pre[_l+1];solve(_l+2, _r, l+1, r-1, pre[_l+1]);}else if(pos == r){fl = 0;L[rt] = post[pos];solve(_l+1, _r, l, r-1, post[pos]);}else {// printf("hh %d\n", rt);L[rt] = post[pos];int _pos = (pos-l) + _l;// printf("%d\n", _pos, pre[_pos]);R[rt] = pre[_pos+1];solve(_l+1, _pos, l, pos-1, post[pos]);solve(_pos+2, _r, pos+1, r-1, pre[_pos+1]);}}int nn = 0;
void dfs(int x) {if(L[x]) dfs(L[x]);if(!nn) nn = 1; else printf(" ");printf("%d", x);if(R[x]) dfs(R[x]);
}
int main() {int n;while(~scanf("%d", &n)) {memset(L, 0, sizeof(L));memset(R, 0, sizeof(R));nn = 0;for(int i = 1; i <= n; ++i) {scanf("%d", &pre[i]);}for(int i = 1; i <= n; ++i) {scanf("%d", &post[i]);}root = pre[1];solve(2, n, 1, n-1, root);if(fl) printf("Yes\n");else printf("No\n");dfs(root);printf("\n");}return 0;
}1120
#include<cmath>
#include<map>
#include<iostream>
#include<cstring>
#include<cstdio>
#include<set>
#include<vector>
#include<queue>
#include<stack>
#include<algorithm>
using namespace std;
typedef long long ll;
const int N = 1e4+5;
const int INF = 0x3f3f3f3f;
#define MP(x, y) make_pair(x, y)map<int, int> mp;
map<int, int>::iterator it;void solve(int x) {int tt = 0;while(x) {tt += x%10;x /= 10;}mp[tt] ++;
}
int main() {int n;while(~scanf("%d", &n)) {mp.clear();for(int i = 0; i < n; ++i) {int a; scanf("%d", &a);solve(a);}int cnt = 0;for(it = mp.begin(); it != mp.end(); ++it) {if(it->second > 0) {cnt ++;}}printf("%d\n", cnt);int fl = 0;for(it = mp.begin(); it != mp.end(); ++it) {if(it->second > 0) {if(!fl) fl = 1; else printf(" ");printf("%d", it->first);}} printf("\n");}return 0;
}
)
-菜单)
