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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#126520 | #602. 最小费用最大流(随机数据) | 1234567890# | 100 ✓ | 1183ms | 8048kb | C++14 | 2.5kb | 2023-07-18 15:58:31 | 2023-07-18 15:58:34 |
Judging History
answer
/*
灏忓簾鐗╋紝杩欓兘涓嶄細 /cf
*/
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define inf (ll)1e10
#define pii pair <ll, ll>
#define fr first
#define se second
const ll mod = 1e9 + 7;
char buf[1 << 21], *p1 = buf, *p2 = buf;
#define getchar() (p1 == p2 && (p2 = (p1 = buf) + fread(buf, 1, 1 << 18, stdin), p1 == p2) ? EOF : *p1++)
inline ll read() {
ll x = 0, f = 1;
char ch = getchar();
while(ch < '0' || ch > '9') f = ((ch == '-') ? -1 : f), ch = getchar();
while(ch >= '0' && ch <= '9') x = x * 10 + ch - '0', ch = getchar();
return x * f;
}
inline void write(ll x) {
if(x < 0) x = -x, putchar('-');
if(x >= 10) write(x / 10);
putchar(x % 10 + '0');
}
ll n, m;
struct Flow {
ll s, t, N;
ll tot = 1;
struct Edge {
ll v, e, w, nxt;
}edge[100005];
ll head[1005], cur[1005], dis[1005], vis[1005];
inline void addedge(ll u, ll v, ll e, ll w) {
edge[++tot].v = v, edge[tot].e = e, edge[tot].w = w, edge[tot].nxt = head[u], head[u] = tot;
}
inline void Addedge(ll u, ll v, ll e, ll w) {
addedge(u, v, e, w);
addedge(v, u, 0, -w);
}
inline bool SPFA() {
for(ll i = 0; i <= N; i++) dis[i] = inf, vis[i] = 0, cur[i] = head[i];
dis[s] = 0, vis[s] = 1;
queue <ll> Q;
Q.push(s);
while(!Q.empty()) {
ll x = Q.front();
Q.pop();
vis[x] = 0;
for(ll i = head[x]; i; i = edge[i].nxt) {
ll v = edge[i].v, e = edge[i].e, w = edge[i].w;
if(dis[v] > dis[x] + w && e) {
dis[v] = dis[x] + w;
if(!vis[v]) Q.push(v), vis[v] = 1;
}
}
}
return dis[t] != dis[0];
}
ll ans, anse;
inline ll dfs(ll x, ll ne) {
if(x == t) {
ans += ne;
return ne;
}
ll now = 0, used = 0;
vis[x] = 1;
for(ll i = cur[x]; i; i = edge[i].nxt) {
cur[x] = i;
ll v = edge[i].v, e = edge[i].e, w = edge[i].w;
if(dis[v] == dis[x] + w && e && !vis[v]) {
now = dfs(v, min(e, ne - used));
if(now) {
edge[i].e -= now;
edge[i^1].e += now;
used += now;
anse += now * w;
if(used == now) break;
}
}
}
return used;
}
inline void Dinic() {
while(SPFA()) {
for(ll i = 0; i <= N; i++) vis[i] = 0;
dfs(s, inf);
}
}
}F;
int main() {
// freopen(".in", "r", stdin);
// freopen(".out", "w", stdout);
n = read(), m = read();
F.s = 1, F.t = n, F.N = n;
for(ll i = 1; i <= m; i++) {
ll u = read(), v = read(), e = read(), w = read();
F.Addedge(u, v, e, w);
}
F.Dinic();
write(F.ans), putchar(' '), write(F.anse), putchar('\n');
return 0;
}
/*
*/
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 10
Accepted
time: 2ms
memory: 5488kb
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: 1ms
memory: 5404kb
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: 1ms
memory: 5452kb
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: 35ms
memory: 5612kb
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: 146ms
memory: 5812kb
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: 144ms
memory: 5708kb
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: 140ms
memory: 5736kb
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: 1094ms
memory: 6080kb
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: 1183ms
memory: 6068kb
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: 1078ms
memory: 8048kb
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"