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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 |
---|---|---|---|---|---|---|---|---|---|
#342670 | #602. 最小费用最大流(随机数据) | _ZMF_# | 0 | 0ms | 0kb | C++11 | 2.5kb | 2024-03-01 14:43:28 | 2024-03-01 14:43:29 |
answer
/*
长弓背负,仙女月鹫,
梦中徐来,长夜悠悠。
今宵共君,夜赏囃子,
盼君速归,长夜悠悠。
睡意袭我,眼阖梦徭,
睡意袭我,意归襁褓。
手扶卓揭,仙女水狃,
盼君速归,长夜悠悠。
今宵共君,戏于西楼,
盼君速归,长夜悠悠。
睡意袭我,涟锜池留,
睡意袭我,意归海角。
——《ever17》
*/
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#include <bits/stdc++.h>
using namespace std;
#define int long long
inline int read()
{
int sum = 0, nega = 1;
char ch = getchar();
while (ch > '9'||ch < '0')
{
if (ch == '-') nega = -1;
ch = getchar();
}
while (ch <= '9'&&ch >= '0') sum = sum * 10 + ch - '0', ch = getchar ();
return sum * nega;
}
const int N = 5009, M = 50009, INF = 1e18;
struct Dinic
{
int n, m, s, t, cnt = 1;
int to[M << 1], nxt[M << 1], val[M << 1], head[N], cost[M << 1];
int a[N], ans, dis[N], vis[N];
inline void addedge(int u, int v, int w, int c)
{
to[++cnt] = v, nxt[cnt] = head[u], head[u] = cnt; cost[cnt] = c, val[cnt] = w;
to[++cnt] = u, nxt[cnt] = head[v], head[v] = cnt; cost[cnt] = -c, val[cnt] = 0;
}
inline int spfa()
{
queue<int> q;
for (int i = 1; i <= n; i++) dis[i] = INF, vis[i] = 0;
dis[s] = 0, q.push(s); vis[s] = 1;
while(!q.empty())
{
int u = q.front(); q.pop();
vis[u] = 0;
for (int i = head[u]; i; i = nxt[i])
if(val[i] && dis[to[i]] > dis[u] + cost[i])
{
dis[to[i]] = dis[u] + cost[i];
if(!vis[to[i]])
{
vis[to[i]] = 1; q.push(to[i]);
}
}
}
return dis[t] != INF;
}
int ret;
inline int dfs(int u, int flow)
{
if(u == t) return flow;
vis[u] = 1;
int res = flow, tot = 0;
for (int i = head[u]; i; i = nxt[i])
if(!vis[to[i]] && val[i] && dis[to[i]] == dis[u] + cost[i])
{
int pp = dfs(to[i], min(res, val[i]));
res -= pp, val[i] -= pp, val[(i ^ 1)] += pp, tot += pp;
ret += pp * cost[i];
}
vis[u] = 0;
return tot;
}
inline void dinic()
{
while(spfa())
{
for (int i = 1; i <= n; i++) vis[i] = 0;
ans += dfs(s, INF);
}
cout << ans << " " << ret << endl;
}
}D;
signed main()
{
D.n = read(), D.m = read(), D.s = read(), D.t = read();
for (int i = 1; i <= D.m; i++)
{
int u = read(), v = read(), w = read(), c = read();
D.addedge(u, v, w, c);
}
D.dinic();
return 0;
}
详细
Test #1:
score: 0
Runtime Error
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:
result:
Test #2:
score: 0
Runtime Error
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:
result:
Test #3:
score: 0
Runtime Error
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:
result:
Test #4:
score: 0
Runtime Error
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:
result:
Test #5:
score: 0
Runtime Error
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:
result:
Test #6:
score: 0
Runtime Error
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:
result:
Test #7:
score: 0
Runtime Error
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:
result:
Test #8:
score: 0
Runtime Error
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:
result:
Test #9:
score: 0
Runtime Error
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:
result:
Test #10:
score: 0
Runtime Error
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...