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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#478850#602. 最小费用最大流(随机数据)Max_s_xaM#100 ✓999ms4220kbC++142.4kb2024-07-15 11:47:592024-07-15 11:48:00

Judging History

This is the latest submission verdict.

  • [2024-07-15 11:48:00]
  • Judged
  • Verdict: 100
  • Time: 999ms
  • Memory: 4220kb
  • [2024-07-15 11:47:59]
  • Submitted

answer

#include <iostream>
#include <algorithm>
#include <cstring>
#include <cmath>
#include <queue>
#include <set>
#include <map>

typedef long long ll;
typedef double lf;
typedef __int128 LL;

namespace FastIO
{
    const int MAXSIZE = 1 << 20;
    char buf[MAXSIZE], *p1, *p2;
    #define gc (p1 == p2 && (p2 = (p1 = buf) + fread(buf, 1, MAXSIZE, stdin), p1 == p2) ? ' ' : *p1++)
    #define blank(x) ((x) == ' ' || (x) == '\n' || (x) == '\r' || (x) == '\t')
    template <typename T> void Read(T &x)
    {
        x = 0; char ch = gc; bool f = 0;
        while (ch < '0' || ch > '9') {if (ch == '-') f = 1; ch = gc;}
        while (ch >= '0' && ch <= '9') x = x * 10 + (ch ^ 48), ch = gc;
        if (f) x = -x;
    }
    void Read(char *s)
    {
        char ch = gc;
        while (blank(ch)) ch = gc;
        while (!blank(ch)) *s++ = ch, ch = gc;
        *s = 0;
    }
}

using namespace std;
using FastIO::Read;

const int MAXN = 410, MAXM = 15e3 + 10;

int n, m, s, t;

struct Edge
{
    int v, nxt, c, f, w;
}e[MAXM << 1];
int head[MAXN], tot;
inline void AddEdge(int u, int v, int c, int w)
{
    e[++tot] = Edge{v, head[u], c, 0, w}, head[u] = tot;
    e[++tot] = Edge{u, head[v], 0, 0, -w}, head[v] = tot;
}
ll dis[MAXN]; bool vis[MAXN];
ll fl[MAXN]; int pth[MAXN];
queue <int> q;
bool SPFA()
{
    for (int i = 1; i <= n; i++) dis[i] = 1e18, vis[i] = 0;
    dis[s] = 0, fl[s] = 1e18, q.push(s);
    while (!q.empty())
    {
        int u = q.front(); q.pop();
        vis[u] = 0;
        for (int i = head[u]; ~i; i = e[i].nxt)
        {
            int v = e[i].v;
            if (dis[v] > dis[u] + e[i].w && e[i].c > e[i].f)
            {
                dis[v] = dis[u] + e[i].w, fl[v] = min(fl[u], (ll)e[i].c - e[i].f), pth[v] = i;
                if (!vis[v]) q.push(v), vis[v] = 1;
            }
        }
    }
    return dis[t] != 1e18;
}
inline void MCMF()
{
    ll flow = 0, cst = 0;
    while (SPFA())
    {
        flow += fl[t], cst += fl[t] * dis[t];
        for (int u = t; u != s; u = e[pth[u] ^ 1].v)
            e[pth[u]].f += fl[t], e[pth[u] ^ 1].f -= fl[t];
    }
    cout << flow << ' ' << cst << "\n";
}

int main()
{
    ios::sync_with_stdio(0), cin.tie(0);
    memset(head, -1, sizeof(head)), tot = -1;
    Read(n), Read(m), s = 1, t = n;
    for (int i = 1, u, v, c, w; i <= m; i++) Read(u), Read(v), Read(c), Read(w), AddEdge(u, v, c, w);
    MCMF();
    return 0;
}

Details

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Test #1:

score: 10
Accepted
time: 0ms
memory: 3604kb

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: 0ms
memory: 3632kb

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: 3800kb

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: 25ms
memory: 3944kb

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: 115ms
memory: 3796kb

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: 116ms
memory: 3852kb

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: 116ms
memory: 3852kb

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: 897ms
memory: 4100kb

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: 999ms
memory: 4192kb

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: 929ms
memory: 4220kb

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"