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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
#92394#602. 最小费用最大流(随机数据)kyEEcccccc#100 ✓862ms4240kbC++142.4kb2023-03-30 16:23:372023-03-30 16:23:43

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.
  • [2023-03-30 16:23:43]
  • 评测
  • 测评结果:100
  • 用时:862ms
  • 内存:4240kb
  • [2023-03-30 16:23:37]
  • 提交

answer

// Author: kyEEcccccc

#include <bits/stdc++.h>

using namespace std;

using LL = long long;
using ULL = unsigned long long;

#define F(i, l, r) for (int i = (l); i <= (r); ++i)
#define FF(i, r, l) for (int i = (r); i >= (l); --i)
#define MAX(a, b) ((a) = max(a, b))
#define MIN(a, b) ((a) = min(a, b))
#define SZ(a) ((int)((a).size()) - 1)

namespace Dinic_C
{
	using CAPT = LL; using COSTT = LL;
	const int V = 405, E = 15005;

	int n;
	struct Edge
	{
		int v;
		CAPT cap, fl;
		COSTT co;
	} e[E << 1];
	int nxt[E << 1], hd[V], tot_e;

	void clr(int nn)
	{
		n = nn;
		memset(hd + 1, -1, n * sizeof (int));
		tot_e = 0;
	}

	int ins_e(int u, int v, CAPT cap, COSTT co)
	{
		e[tot_e] = {v, cap, 0, co};
		nxt[tot_e] = hd[u];
		hd[u] = tot_e++;
		e[tot_e] = {u, 0, 0, -co};
		nxt[tot_e] = hd[v];
		hd[v] = tot_e++;
		return tot_e - 2;
	}

	COSTT lv[V];
	int from[V];
	bool vis[V], inq[V];

	bool spfa(int s, int t)
	{
		memset(vis + 1, 0, n * sizeof (bool));
		vector<int> que; int hd_q = 0;
		lv[t] = 0;
		vis[t] = 1;
		inq[t] = 1;
		que.push_back(t);
		while (hd_q < que.size())
		{
			int u = que[hd_q++];
			inq[u] = 0;
			for (int i = hd[u]; i != -1; i = nxt[i])
			{
				if (e[i ^ 1].fl == e[i ^ 1].cap) continue;
				if (vis[e[i].v] && lv[e[i].v] <= lv[u] + e[i ^ 1].co) continue;
				vis[e[i].v] = 1;
				lv[e[i].v] = lv[u] + e[i ^ 1].co;
				from[e[i].v] = i ^ 1;
				if (!inq[e[i].v]) que.push_back(e[i].v), inq[e[i].v] = 1;
			}
		}
		return vis[s];
	}

	pair<CAPT, COSTT> dinic(int s, int t)
	{
		pair<CAPT, COSTT> ans = {0, 0};
		while (spfa(s, t))
		{
			COSTT sc = 0;
			CAPT mn = numeric_limits<CAPT>::max();
			int p = s;
			while (p != t)
			{
				MIN(mn, e[from[p]].cap - e[from[p]].fl);
				sc += e[from[p]].co;
				p = e[from[p]].v;
			}
			ans.first += mn;
			ans.second += mn * sc;
			p = s;
			while (p != t)
			{
				e[from[p]].fl += mn;
				e[from[p] ^ 1].fl -= mn;
				p = e[from[p]].v;
			}
		}
		return ans;
	}
}

int n, m;

signed main(void)
{
	// freopen(".in", "r", stdin);
	// freopen(".out", "w", stdout);
	ios::sync_with_stdio(0), cin.tie(nullptr);

	cin >> n >> m;
	Dinic_C::clr(n);
	F(i, 1, m)
	{
		int u, v, c, w; cin >> u >> v >> c >> w;
		Dinic_C::ins_e(u, v, c, w);
	}
	auto ans = Dinic_C::dinic(1, n);
	cout << ans.first << ' ' << ans.second << '\n';

	return 0;
}

詳細信息

Test #1:

score: 10
Accepted
time: 0ms
memory: 3548kb

input:

8 27
2 3 2147483647 100
1 3 1 100
2 4 2147483647 10
1 4 1 10
2 4 2147483647 10
1 4 1 10
2 8 3 0
3 5 2147483647 100
1 5 1 100
3 8 1 0
3 2 2147483647 0
4 5 2147483647 10
1 5 1 10
4 8 1 0
4 2 2147483647 0
5 6 2147483647 1
1 6 1 1
5 6 2147483647 1
1 6 1 1
5 7 2147483647 1
1 7 1 1
5 8 3 0
5 2 2147483647 ...

output:

8 243

result:

ok 2 number(s): "8 243"

Test #2:

score: 10
Accepted
time: 2ms
memory: 3448kb

input:

12 49
2 10 2147483647 5
1 10 1 5
2 5 2147483647 50
1 5 1 50
2 9 2147483647 8
1 9 1 8
2 8 2147483647 47
1 8 1 47
2 11 2147483647 17
1 11 1 17
2 12 5 0
3 12 0 0
3 2 2147483647 0
4 6 2147483647 18
1 6 1 18
4 11 2147483647 12
1 11 1 12
4 9 2147483647 14
1 9 1 14
4 12 3 0
4 2 2147483647 0
5 11 2147483647...

output:

15 436

result:

ok 2 number(s): "15 436"

Test #3:

score: 10
Accepted
time: 0ms
memory: 3500kb

input:

27 169
2 15 2147483647 24
1 15 1 24
2 19 2147483647 96
1 19 1 96
2 12 2147483647 49
1 12 1 49
2 13 2147483647 75
1 13 1 75
2 24 2147483647 2
1 24 1 2
2 27 5 0
3 27 0 0
3 2 2147483647 0
4 11 2147483647 99
1 11 1 99
4 3 2147483647 85
1 3 1 85
4 27 2 0
4 2 2147483647 0
5 27 0 0
5 2 2147483647 0
6 9 214...

output:

60 4338

result:

ok 2 number(s): "60 4338"

Test #4:

score: 10
Accepted
time: 21ms
memory: 3588kb

input:

77 2149
2 42 2147483647 33
1 42 1 33
2 68 2147483647 30
1 68 1 30
2 76 2147483647 13
1 76 1 13
2 51 2147483647 93
1 51 1 93
2 12 2147483647 39
1 12 1 39
2 57 2147483647 74
1 57 1 74
2 70 2147483647 21
1 70 1 21
2 73 2147483647 24
1 73 1 24
2 52 2147483647 54
1 52 1 54
2 15 2147483647 99
1 15 1 99
2 ...

output:

1000 74606

result:

ok 2 number(s): "1000 74606"

Test #5:

score: 10
Accepted
time: 95ms
memory: 3736kb

input:

102 4199
2 48 2147483647 42
1 48 1 42
2 85 2147483647 50
1 85 1 50
2 22 2147483647 83
1 22 1 83
2 95 2147483647 97
1 95 1 97
2 82 2147483647 34
1 82 1 34
2 25 2147483647 72
1 25 1 72
2 4 2147483647 17
1 4 1 17
2 47 2147483647 10
1 47 1 10
2 71 2147483647 12
1 71 1 12
2 68 2147483647 39
1 68 1 39
2 2...

output:

2000 161420

result:

ok 2 number(s): "2000 161420"

Test #6:

score: 10
Accepted
time: 93ms
memory: 3848kb

input:

102 4199
2 79 2147483647 13
1 79 1 13
2 83 2147483647 73
1 83 1 73
2 75 2147483647 90
1 75 1 90
2 30 2147483647 92
1 30 1 92
2 54 2147483647 25
1 54 1 25
2 66 2147483647 53
1 66 1 53
2 52 2147483647 37
1 52 1 37
2 63 2147483647 46
1 63 1 46
2 11 2147483647 20
1 11 1 20
2 55 2147483647 53
1 55 1 53
2...

output:

2000 143072

result:

ok 2 number(s): "2000 143072"

Test #7:

score: 10
Accepted
time: 92ms
memory: 3776kb

input:

102 4199
2 39 2147483647 45
1 39 1 45
2 51 2147483647 11
1 51 1 11
2 86 2147483647 63
1 86 1 63
2 23 2147483647 46
1 23 1 46
2 48 2147483647 63
1 48 1 63
2 87 2147483647 8
1 87 1 8
2 73 2147483647 63
1 73 1 63
2 5 2147483647 52
1 5 1 52
2 80 2147483647 21
1 80 1 21
2 31 2147483647 44
1 31 1 44
2 101...

output:

2000 146132

result:

ok 2 number(s): "2000 146132"

Test #8:

score: 10
Accepted
time: 735ms
memory: 4176kb

input:

302 10599
2 72 2147483647 169
1 72 1 169
2 260 2147483647 165
1 260 1 165
2 12 2147483647 108
1 12 1 108
2 16 2147483647 26
1 16 1 26
2 28 2147483647 148
1 28 1 148
2 7 2147483647 74
1 7 1 74
2 139 2147483647 199
1 139 1 199
2 231 2147483647 9
1 231 1 9
2 287 2147483647 123
1 287 1 123
2 135 2147483...

output:

5000 1106316

result:

ok 2 number(s): "5000 1106316"

Test #9:

score: 10
Accepted
time: 862ms
memory: 4240kb

input:

302 10599
2 222 2147483647 132
1 222 1 132
2 17 2147483647 7
1 17 1 7
2 177 2147483647 253
1 177 1 253
2 90 2147483647 195
1 90 1 195
2 128 2147483647 289
1 128 1 289
2 42 2147483647 193
1 42 1 193
2 213 2147483647 133
1 213 1 133
2 263 2147483647 293
1 263 1 293
2 50 2147483647 155
1 50 1 155
2 228...

output:

5000 1290871

result:

ok 2 number(s): "5000 1290871"

Test #10:

score: 10
Accepted
time: 820ms
memory: 4188kb

input:

302 10599
2 176 2147483647 289
1 176 1 289
2 190 2147483647 99
1 190 1 99
2 10 2147483647 96
1 10 1 96
2 240 2147483647 165
1 240 1 165
2 273 2147483647 205
1 273 1 205
2 248 2147483647 194
1 248 1 194
2 220 2147483647 122
1 220 1 122
2 194 2147483647 167
1 194 1 167
2 8 2147483647 67
1 8 1 67
2 227...

output:

5000 1395897

result:

ok 2 number(s): "5000 1395897"