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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#478850 | #602. 最小费用最大流(随机数据) | Max_s_xaM# | 100 ✓ | 999ms | 4220kb | C++14 | 2.4kb | 2024-07-15 11:47:59 | 2024-07-15 11:48:00 |
Judging History
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
Tip: Click on the bar to expand more detailed information
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"