Submission #4065826


Source Code Expand

#include <bits/stdc++.h>
typedef long long ll;

using namespace std;

struct edge { int to, cap, rev; };
vector<vector<edge>> G;
vector<int> level;
vector<int> iter;

void add_edge(int from, int to, int cap) {
	G[from].push_back((edge){to, cap, (int)G[to].size()});
	G[to].push_back((edge){from, 0, (int)(G[from].size() - 1)});
}

void bfs(int s) {
	level.assign(level.size(), -1);
	queue<int> que;
	level[s] = 0;
	que.push(s);
	while (!que.empty()) {
		int v = que.front();
		que.pop();
		for (int i = 0; i < G[v].size(); ++i) {
			edge &e = G[v][i];
			if ((e.cap > 0) && (level[e.to] < 0)) {
				level[e.to] = level[v] + 1;
				que.push(e.to);
			}
		}
	}
}

int dfs(int v, int t, int f) {
	if (v == t) { return f; }
	for (int &i = iter[v]; i < G[v].size(); ++i) {
		edge &e = G[v][i];
		if ((e.cap > 0) && (level[v] < level[e.to])) {
			int d = dfs(e.to, t, min(f, e.cap));
			if (d > 0) {
				e.cap -= d;
				G[e.to][e.rev].cap += d;
				return d;
			}
		}
	}
	return 0;
}

int max_flow(int s, int t) {
	int INF = 1e8;
	int flow = 0;
	while (true) {
		bfs(s);
		if (level[t] < 0) { return flow; }
		iter.assign(iter.size(), 0);
		int f;
		while ((f = dfs(s, t, INF)) > 0) {
			flow += f;
		}
	}
}

int main() {
	int N, g, E;
	cin >> N >> g >> E;
	G.resize(N + 1);
	level.resize(N + 1);
	iter.resize(N + 1);
	for (int i = 0; i < g; ++i) {
		int p;
		cin >> p;
		add_edge(p, N, 1);
	}
	for (int i = 0; i < E; ++i) {
		int a, b;
		cin >> a >> b;
		add_edge(a, b, 1);
		add_edge(b, a, 1);
	}

	int res = max_flow(0, N);
	cout << res << endl;

	return 0;
}

Submission Info

Submission Time
Task D - 浮気予防
User woodline23xx
Language C++14 (GCC 5.4.1)
Score 100
Code Size 1643 Byte
Status AC
Exec Time 4 ms
Memory 640 KB

Judge Result

Set Name part All
Score / Max Score 99 / 99 1 / 1
Status
AC × 27
AC × 61
Set Name Test Cases
part test_01_AB.txt, test_02_AB.txt, test_03_AB.txt, test_04_AB.txt, test_05_AB.txt, test_06_AB.txt, test_07_AB.txt, test_08_AB.txt, test_09_AB.txt, test_10_AB.txt, test_11_AB.txt, test_12_AB.txt, test_13_AB.txt, test_14_AB.txt, test_15_AB.txt, test_16_AB.txt, test_17_AB.txt, test_18_AB.txt, test_19_AB.txt, test_20_AB.txt, test_21_AB.txt, test_22_AB.txt, test_23_AB.txt, test_24_AB.txt, test_25_AB.txt, test_41_AB.txt, test_47_AB.txt
All sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt, sample_05.txt, sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt, sample_05.txt, test_01_AB.txt, test_02_AB.txt, test_03_AB.txt, test_04_AB.txt, test_05_AB.txt, test_06_AB.txt, test_07_AB.txt, test_08_AB.txt, test_09_AB.txt, test_10_AB.txt, test_11_AB.txt, test_12_AB.txt, test_13_AB.txt, test_14_AB.txt, test_15_AB.txt, test_16_AB.txt, test_17_AB.txt, test_18_AB.txt, test_19_AB.txt, test_20_AB.txt, test_21_AB.txt, test_22_AB.txt, test_23_AB.txt, test_24_AB.txt, test_25_AB.txt, test_26_A.txt, test_27_A.txt, test_28_A.txt, test_29_A.txt, test_30_A.txt, test_31_A.txt, test_32_A.txt, test_33_A.txt, test_34_A.txt, test_35_A.txt, test_36_A.txt, test_37_A.txt, test_38_A.txt, test_39_A.txt, test_40_A.txt, test_41_AB.txt, test_42_A.txt, test_43_A.txt, test_44_A.txt, test_45_A.txt, test_46_A.txt, test_47_AB.txt, test_48_A.txt, test_49_A.txt, test_50_A.txt, test_51_A.txt
Case Name Status Exec Time Memory
sample_01.txt AC 1 ms 256 KB
sample_02.txt AC 1 ms 256 KB
sample_03.txt AC 1 ms 256 KB
sample_04.txt AC 1 ms 256 KB
sample_05.txt AC 1 ms 256 KB
test_01_AB.txt AC 1 ms 256 KB
test_02_AB.txt AC 1 ms 256 KB
test_03_AB.txt AC 1 ms 256 KB
test_04_AB.txt AC 1 ms 256 KB
test_05_AB.txt AC 1 ms 256 KB
test_06_AB.txt AC 1 ms 256 KB
test_07_AB.txt AC 1 ms 256 KB
test_08_AB.txt AC 1 ms 256 KB
test_09_AB.txt AC 1 ms 256 KB
test_10_AB.txt AC 1 ms 256 KB
test_11_AB.txt AC 1 ms 256 KB
test_12_AB.txt AC 1 ms 256 KB
test_13_AB.txt AC 1 ms 256 KB
test_14_AB.txt AC 1 ms 256 KB
test_15_AB.txt AC 1 ms 256 KB
test_16_AB.txt AC 1 ms 256 KB
test_17_AB.txt AC 1 ms 256 KB
test_18_AB.txt AC 1 ms 256 KB
test_19_AB.txt AC 1 ms 256 KB
test_20_AB.txt AC 1 ms 256 KB
test_21_AB.txt AC 1 ms 256 KB
test_22_AB.txt AC 1 ms 256 KB
test_23_AB.txt AC 1 ms 256 KB
test_24_AB.txt AC 1 ms 256 KB
test_25_AB.txt AC 1 ms 256 KB
test_26_A.txt AC 4 ms 512 KB
test_27_A.txt AC 4 ms 640 KB
test_28_A.txt AC 4 ms 640 KB
test_29_A.txt AC 4 ms 640 KB
test_30_A.txt AC 4 ms 640 KB
test_31_A.txt AC 4 ms 640 KB
test_32_A.txt AC 2 ms 256 KB
test_33_A.txt AC 3 ms 384 KB
test_34_A.txt AC 2 ms 256 KB
test_35_A.txt AC 2 ms 256 KB
test_36_A.txt AC 2 ms 256 KB
test_37_A.txt AC 2 ms 384 KB
test_38_A.txt AC 1 ms 256 KB
test_39_A.txt AC 1 ms 256 KB
test_40_A.txt AC 1 ms 256 KB
test_41_AB.txt AC 1 ms 256 KB
test_42_A.txt AC 2 ms 384 KB
test_43_A.txt AC 1 ms 256 KB
test_44_A.txt AC 2 ms 256 KB
test_45_A.txt AC 1 ms 256 KB
test_46_A.txt AC 1 ms 256 KB
test_47_AB.txt AC 1 ms 256 KB
test_48_A.txt AC 1 ms 256 KB
test_49_A.txt AC 1 ms 256 KB
test_50_A.txt AC 1 ms 256 KB
test_51_A.txt AC 1 ms 256 KB