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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#92394 | #602. 最小费用最大流(随机数据) | kyEEcccccc# | 100 ✓ | 862ms | 4240kb | C++14 | 2.4kb | 2023-03-30 16:23:37 | 2023-03-30 16:23:43 |
Judging History
answer
// Author: kyEEcccccc
#include <bits/stdc++.h>
using namespace std;
using LL = long long;
using ULL = unsigned long long;
#define F(i, l, r) for (int i = (l); i <= (r); ++i)
#define FF(i, r, l) for (int i = (r); i >= (l); --i)
#define MAX(a, b) ((a) = max(a, b))
#define MIN(a, b) ((a) = min(a, b))
#define SZ(a) ((int)((a).size()) - 1)
namespace Dinic_C
{
using CAPT = LL; using COSTT = LL;
const int V = 405, E = 15005;
int n;
struct Edge
{
int v;
CAPT cap, fl;
COSTT co;
} e[E << 1];
int nxt[E << 1], hd[V], tot_e;
void clr(int nn)
{
n = nn;
memset(hd + 1, -1, n * sizeof (int));
tot_e = 0;
}
int ins_e(int u, int v, CAPT cap, COSTT co)
{
e[tot_e] = {v, cap, 0, co};
nxt[tot_e] = hd[u];
hd[u] = tot_e++;
e[tot_e] = {u, 0, 0, -co};
nxt[tot_e] = hd[v];
hd[v] = tot_e++;
return tot_e - 2;
}
COSTT lv[V];
int from[V];
bool vis[V], inq[V];
bool spfa(int s, int t)
{
memset(vis + 1, 0, n * sizeof (bool));
vector<int> que; int hd_q = 0;
lv[t] = 0;
vis[t] = 1;
inq[t] = 1;
que.push_back(t);
while (hd_q < que.size())
{
int u = que[hd_q++];
inq[u] = 0;
for (int i = hd[u]; i != -1; i = nxt[i])
{
if (e[i ^ 1].fl == e[i ^ 1].cap) continue;
if (vis[e[i].v] && lv[e[i].v] <= lv[u] + e[i ^ 1].co) continue;
vis[e[i].v] = 1;
lv[e[i].v] = lv[u] + e[i ^ 1].co;
from[e[i].v] = i ^ 1;
if (!inq[e[i].v]) que.push_back(e[i].v), inq[e[i].v] = 1;
}
}
return vis[s];
}
pair<CAPT, COSTT> dinic(int s, int t)
{
pair<CAPT, COSTT> ans = {0, 0};
while (spfa(s, t))
{
COSTT sc = 0;
CAPT mn = numeric_limits<CAPT>::max();
int p = s;
while (p != t)
{
MIN(mn, e[from[p]].cap - e[from[p]].fl);
sc += e[from[p]].co;
p = e[from[p]].v;
}
ans.first += mn;
ans.second += mn * sc;
p = s;
while (p != t)
{
e[from[p]].fl += mn;
e[from[p] ^ 1].fl -= mn;
p = e[from[p]].v;
}
}
return ans;
}
}
int n, m;
signed main(void)
{
// freopen(".in", "r", stdin);
// freopen(".out", "w", stdout);
ios::sync_with_stdio(0), cin.tie(nullptr);
cin >> n >> m;
Dinic_C::clr(n);
F(i, 1, m)
{
int u, v, c, w; cin >> u >> v >> c >> w;
Dinic_C::ins_e(u, v, c, w);
}
auto ans = Dinic_C::dinic(1, n);
cout << ans.first << ' ' << ans.second << '\n';
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 10
Accepted
time: 0ms
memory: 3548kb
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: 2ms
memory: 3448kb
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: 3500kb
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: 21ms
memory: 3588kb
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: 95ms
memory: 3736kb
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: 93ms
memory: 3848kb
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: 92ms
memory: 3776kb
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: 735ms
memory: 4176kb
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: 862ms
memory: 4240kb
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: 820ms
memory: 4188kb
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"