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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#432832 | #602. 最小费用最大流(随机数据) | iee | 0 | 3ms | 4852kb | C++17 | 1.5kb | 2024-06-07 18:28:56 | 2024-06-07 18:28:56 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
struct MCF {
static constexpr int N = 5005;
struct edge {
int v, rev, f, c;
};
vector<edge> e[N];
void add(int u, int v, int f, int c) {
e[u].push_back({v, (int) e[v].size(), f, c});
e[v].push_back({u, (int) e[u].size() - 1, 0, -c});
}
int dis[N], h[N];
int lim[N];
array<int, 3> pre[N];
bool bfs(int S, int T) {
memset(dis, 0x3f, sizeof dis);
memset(lim, 0x3f, sizeof lim);
priority_queue<array<int, 2>, vector<array<int, 2>>, greater<>> Q;
Q.push({dis[S] = 0, S});
while (!Q.empty()) {
auto [d, u] = Q.top();
Q.pop();
if (d != dis[u]) continue;
for (int i = 0; i < e[u].size(); i++) {
auto [v, rev, f, c] = e[u][i];
if (f && dis[v] > dis[u] + h[u] - h[v] + c) {
lim[v] = min(lim[u], f);
Q.push({dis[v] = dis[u] + h[u] - h[v] + c, v});
pre[v] = {u, i, rev};
}
}
}
return dis[T] < 1e18;
}
pair<int, int> flow(int S, int T) {
int rf = 0, rc = 0;
while (bfs(S, T)) {
for (int i = 0; i < N; i++) {
h[i] = min(h[i] + dis[i], (int) 1e18);
}
int fl = lim[T];
for (int v = T; v != S; ) {
int u = pre[v][0];
e[u][pre[v][1]].f -= fl;
e[v][pre[v][2]].f += fl;
v = u;
}
rf += fl, rc += fl * h[T];
}
return {rf, rc};
}
} G;
signed main() {
int n, m;
cin >> n >> m;
for (int i = 1, u, v, f, c; i <= m; i++) {
cin >> u >> v >> f >> c;
G.add(u, v, f, c);
}
auto [f, c] = G.flow(0, n - 1);
cout << f << " " << c << "\n";
return 0;
}
详细
Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 3960kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '8', found: '0'
Test #2:
score: 0
Wrong Answer
time: 1ms
memory: 3800kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '15', found: '0'
Test #3:
score: 0
Wrong Answer
time: 1ms
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:
0 0
result:
wrong answer 1st numbers differ - expected: '60', found: '0'
Test #4:
score: 0
Wrong Answer
time: 2ms
memory: 4012kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '1000', found: '0'
Test #5:
score: 0
Wrong Answer
time: 3ms
memory: 4004kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '2000', found: '0'
Test #6:
score: 0
Wrong Answer
time: 3ms
memory: 4028kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '2000', found: '0'
Test #7:
score: 0
Wrong Answer
time: 3ms
memory: 4240kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '2000', found: '0'
Test #8:
score: 0
Wrong Answer
time: 3ms
memory: 4720kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '5000', found: '0'
Test #9:
score: 0
Wrong Answer
time: 3ms
memory: 4620kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '5000', found: '0'
Test #10:
score: 0
Wrong Answer
time: 3ms
memory: 4852kb
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:
0 0
result:
wrong answer 1st numbers differ - expected: '5000', found: '0'