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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#91200#3249. 分组作业INFiNiTE_ENERZYWA 44ms14644kbC++143.2kb2023-03-27 17:23:282023-03-27 17:23:31

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-03-27 17:23:31]
  • 评测
  • 测评结果:WA
  • 用时:44ms
  • 内存:14644kb
  • [2023-03-27 17:23:28]
  • 提交

answer

//P8215
#include <bits/stdc++.h>
using namespace std;
#define int long long

const int N = 1e6 + 10, M = 1e6 + 10;
const long long inf = 1e17;
int n, m, Head[N], Edge[M], Leng[M], Next[M], tot = 1;
int dep[N], now[N];

void add(int u, int v, int w){
	Edge[++tot] = v, Leng[tot] = w, Next[tot] = Head[u], Head[u] = tot;
	Edge[++tot] = u, Leng[tot] = 0, Next[tot] = Head[v], Head[v] = tot;
}
bool bfs(int s, int t){
	queue<int> q;
	memset(dep, 0, sizeof(dep));
	q.push(s);
	dep[s] = 1;
	now[s] = Head[s];
	while(!q.empty()){
		int u = q.front();
		q.pop();
		for(int i = Head[u]; i; i = Next[i]){
			int v = Edge[i], w = Leng[i];
			if(w && !dep[v]){
				q.push(v);
				now[v] = Head[v];
				dep[v] = dep[u] + 1;
				if(v == t){
					return true;
				}
			}
		}
	}
	return false;
}
int dfs(int u, int t, int flow){
	if(u == t){
		return flow;
	}
	int rest = flow;
	for(int i = now[u]; i && rest; i = Next[i]){
		int v = Edge[i], w = Leng[i];
        now[u] = i;
		if(w && dep[v] == dep[u] + 1){
			int k = dfs(v, t, min(rest, w));
			if(!k){
				dep[v] = 0;
			}
			Leng[i] -= k;
			Leng[i^1] += k;
			rest -= k;
		}
	}
	return flow - rest;
}
long long Dinic(int s, int t){
	long long MaxFlow = 0, tmp;
	while(bfs(s, t)){
		while(tmp = dfs(s, t, inf)){
			MaxFlow += tmp;
		}
	}
	return MaxFlow;
}
//int n, m, hd[N], eg[N], nx[N], tot = 1;
//int dep[N], now[N];
//long long ln[N];
//
//void add(int x, int y, long long z){
//	eg[++tot] = y;
//	ln[tot] = z;
//	nx[tot] = hd[x];
//	hd[x] = tot;
//	eg[++tot] = x;
//	ln[tot] = 0;
//	nx[tot] = hd[y];
//	hd[y] = tot;
//}
//bool bfs(int s, int t){
//	memset(dep, 0, sizeof(dep));
//	memcpy(now, hd, sizeof(hd));
//	queue<int> q;
//	q.push(s);
//	dep[s] = 1;
//	while(!q.empty()){
//		int x = q.front();
//		q.pop();
//		for(int i = hd[x]; i; i = nx[i]){
//			int y = eg[i];
//			long long z = ln[i];
//			if(!dep[y] && z > 0){
//				dep[y] = dep[x] + 1;
//				q.push(y);
//				if(y == t){
//					return true;
//				}
//			}
//		}
//	}
//	return false;
//}
//long long dfs(int x, int t, long long flow){
//	if(x == t){
//		return flow;
//	}
//	long long rest = flow;
//	for(int i = now[x]; i; i = nx[i]){
//		int y = eg[i];
//		long long z = ln[i];
//		now[x] = i;
//		if(z > 0 && dep[y] == dep[x] + 1){
//			long long k = dfs(y, t, min(z, rest));
//			if(!k){
//				dep[y] = 0;
//			}
//			ln[i] -= k;
//			ln[i^1] += k;
//			rest -= k;
//		}
//	}
//	return flow - rest;
//}
//long long dinic(int s, int t){
//	long long mf = 0, tmp = 0;
//	while(bfs(s, t)){
//		while(tmp = dfs(s, t, inf)){
//			mf += tmp;
//		}
//	}
//	return mf;
//}

signed main(){
	scanf("%lld%lld", &n, &m);
	int s = 3 * n + 1, t = 3 * n + 2;
	#define p(x) (n+n+ceil((x)/2.0))
	for(int i = 1; i <= n + n; ++ i){
		int c, d, e;
		scanf("%lld%lld%lld", &c, &d, &e);
		add(s, i, d);
		add(i, t, c);
		add(p(i), i, inf);
		if(i & 1){
			add(i, i+1, e);
		} else {
			add(i, i-1, e);
		}
	}
	for(int i = 1; i <= m; ++ i){
		int A, B, a, b;
		scanf("%lld%lld%lld%lld", &A, &B, &a, &b);
		add(B, p(A), a);
		add(A, p(B), b);
	}
	printf("%lld\n", Dinic(s, t));
	return 0;
}

详细

Test #1:

score: 0
Wrong Answer
time: 44ms
memory: 14644kb

input:

5000 10000
23060775 12 2
255978380 28 517
5 6624 26
151149 45131806 23849036
489 484971 24970
162846 1993316 188305
56311199 2003 211
1 50534913 517527
364913 882765 298
71 26 122914059
13 65459 18150033
20 607 8
380059068 3873712 228
9813 5449 6370
3309369 37410691 8
181 1 62340851
1705 4 107
8 209...

output:

28301586632

result:

wrong answer 1st lines differ - expected: '22929674417', found: '28301586632'