#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int N = 1e2 + 5;
const int K = 1e3 + 5;
const ll oo = 1e15;
int n, m, k;
ll buy[N][K], sell[N][K], d[N][N], c[N][N], f[N][N];
bool check(ll mid){
for (int i = 1; i <= n; i ++)
for (int j = 1; j <= n; j ++){
f[i][j] = oo;
if ( i != j && d[i][j] != oo )
f[i][j] = min(f[i][j], -c[i][j]+mid*min(oo/mid, d[i][j]));
}
for (int t = 1; t <= n; t ++)
for (int i = 1; i <= n; i ++)
for (int j = 1; j <= n; j ++)
f[i][j] = min(oo, min(f[i][j], f[i][t]+f[t][j]));
for (int i = 1; i <= n; i ++)
if ( f[i][i] <= 0 ) return true;
return false;
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
cin >> n >> m >> k;
for (int i = 1; i <= n; i ++)
for (int j = 1; j <= k; j ++)
cin >> buy[i][j] >> sell[i][j];
for (int i = 1; i <= n; i ++)
for (int j = 1; j <= n; j ++)
if ( i == j ) d[i][j] = 0;
else d[i][j] = oo;
for (int i = 1; i <= m; i ++){
int u, v;
ll w;
cin >> u >> v >> w;
d[u][v] = w;
}
for (int t = 1; t <= n; t ++)
for (int i = 1; i <= n; i ++)
for (int j = 1; j <= n; j ++)
d[i][j] = min(d[i][j], d[i][t]+d[t][j]);
for (int i = 1; i <= n; i ++)
for (int j = 1; j <= n; j ++) if ( i != j ){
for (int t = 1; t <= k; t ++) if ( buy[i][t] != -1 && sell[j][t] != -1 )
c[i][j] = max(c[i][j], sell[j][t]-buy[i][t]);
}
ll lo = 1, hi = 1e15, res = 0;
while ( lo <= hi ){
ll mid = ( lo + hi ) / 2;
if ( check(mid) ) res = mid, lo = mid + 1;
else hi = mid - 1;
}
cout << res;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
91 ms |
2124 KB |
Output is correct |
2 |
Correct |
72 ms |
1292 KB |
Output is correct |
3 |
Correct |
75 ms |
1292 KB |
Output is correct |
4 |
Correct |
11 ms |
724 KB |
Output is correct |
5 |
Correct |
14 ms |
724 KB |
Output is correct |
6 |
Correct |
11 ms |
820 KB |
Output is correct |
7 |
Correct |
12 ms |
852 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
11 ms |
812 KB |
Output is correct |
10 |
Correct |
13 ms |
724 KB |
Output is correct |
11 |
Correct |
10 ms |
724 KB |
Output is correct |
12 |
Correct |
0 ms |
340 KB |
Output is correct |
13 |
Correct |
10 ms |
724 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
820 KB |
Output is correct |
2 |
Correct |
12 ms |
852 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
11 ms |
812 KB |
Output is correct |
5 |
Correct |
13 ms |
724 KB |
Output is correct |
6 |
Correct |
10 ms |
724 KB |
Output is correct |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Correct |
10 ms |
724 KB |
Output is correct |
9 |
Correct |
12 ms |
852 KB |
Output is correct |
10 |
Correct |
11 ms |
844 KB |
Output is correct |
11 |
Correct |
11 ms |
892 KB |
Output is correct |
12 |
Correct |
10 ms |
852 KB |
Output is correct |
13 |
Correct |
12 ms |
888 KB |
Output is correct |
14 |
Correct |
0 ms |
340 KB |
Output is correct |
15 |
Correct |
10 ms |
848 KB |
Output is correct |
16 |
Correct |
11 ms |
888 KB |
Output is correct |
17 |
Correct |
10 ms |
724 KB |
Output is correct |
18 |
Correct |
10 ms |
868 KB |
Output is correct |
19 |
Correct |
11 ms |
852 KB |
Output is correct |
20 |
Correct |
14 ms |
852 KB |
Output is correct |
21 |
Correct |
15 ms |
852 KB |
Output is correct |
22 |
Correct |
12 ms |
852 KB |
Output is correct |
23 |
Correct |
12 ms |
852 KB |
Output is correct |
24 |
Correct |
12 ms |
828 KB |
Output is correct |
25 |
Correct |
13 ms |
892 KB |
Output is correct |
26 |
Correct |
0 ms |
340 KB |
Output is correct |
27 |
Correct |
11 ms |
852 KB |
Output is correct |
28 |
Correct |
11 ms |
884 KB |
Output is correct |
29 |
Correct |
11 ms |
892 KB |
Output is correct |
30 |
Correct |
11 ms |
856 KB |
Output is correct |
31 |
Correct |
10 ms |
852 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
13 ms |
892 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
11 ms |
852 KB |
Output is correct |
4 |
Correct |
11 ms |
884 KB |
Output is correct |
5 |
Correct |
11 ms |
892 KB |
Output is correct |
6 |
Correct |
11 ms |
856 KB |
Output is correct |
7 |
Correct |
10 ms |
852 KB |
Output is correct |
8 |
Correct |
78 ms |
1492 KB |
Output is correct |
9 |
Correct |
132 ms |
2140 KB |
Output is correct |
10 |
Correct |
80 ms |
1424 KB |
Output is correct |
11 |
Correct |
82 ms |
1612 KB |
Output is correct |
12 |
Correct |
81 ms |
1732 KB |
Output is correct |
13 |
Correct |
74 ms |
1512 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
12 ms |
852 KB |
Output is correct |
2 |
Correct |
11 ms |
844 KB |
Output is correct |
3 |
Correct |
11 ms |
892 KB |
Output is correct |
4 |
Correct |
10 ms |
852 KB |
Output is correct |
5 |
Correct |
12 ms |
888 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
10 ms |
848 KB |
Output is correct |
8 |
Correct |
11 ms |
888 KB |
Output is correct |
9 |
Correct |
10 ms |
724 KB |
Output is correct |
10 |
Correct |
10 ms |
868 KB |
Output is correct |
11 |
Correct |
11 ms |
852 KB |
Output is correct |
12 |
Correct |
14 ms |
852 KB |
Output is correct |
13 |
Correct |
15 ms |
852 KB |
Output is correct |
14 |
Correct |
12 ms |
852 KB |
Output is correct |
15 |
Correct |
12 ms |
852 KB |
Output is correct |
16 |
Correct |
12 ms |
828 KB |
Output is correct |
17 |
Correct |
78 ms |
1492 KB |
Output is correct |
18 |
Correct |
132 ms |
2140 KB |
Output is correct |
19 |
Correct |
80 ms |
1424 KB |
Output is correct |
20 |
Correct |
82 ms |
1612 KB |
Output is correct |
21 |
Correct |
81 ms |
1732 KB |
Output is correct |
22 |
Correct |
74 ms |
1512 KB |
Output is correct |
23 |
Correct |
13 ms |
892 KB |
Output is correct |
24 |
Correct |
0 ms |
340 KB |
Output is correct |
25 |
Correct |
11 ms |
852 KB |
Output is correct |
26 |
Correct |
11 ms |
884 KB |
Output is correct |
27 |
Correct |
11 ms |
892 KB |
Output is correct |
28 |
Correct |
11 ms |
856 KB |
Output is correct |
29 |
Correct |
10 ms |
852 KB |
Output is correct |
30 |
Correct |
91 ms |
2124 KB |
Output is correct |
31 |
Correct |
72 ms |
1292 KB |
Output is correct |
32 |
Correct |
75 ms |
1292 KB |
Output is correct |
33 |
Correct |
11 ms |
724 KB |
Output is correct |
34 |
Correct |
14 ms |
724 KB |
Output is correct |
35 |
Correct |
11 ms |
820 KB |
Output is correct |
36 |
Correct |
12 ms |
852 KB |
Output is correct |
37 |
Correct |
1 ms |
340 KB |
Output is correct |
38 |
Correct |
11 ms |
812 KB |
Output is correct |
39 |
Correct |
13 ms |
724 KB |
Output is correct |
40 |
Correct |
10 ms |
724 KB |
Output is correct |
41 |
Correct |
0 ms |
340 KB |
Output is correct |
42 |
Correct |
10 ms |
724 KB |
Output is correct |
43 |
Correct |
75 ms |
1400 KB |
Output is correct |
44 |
Correct |
78 ms |
1592 KB |
Output is correct |
45 |
Correct |
94 ms |
2620 KB |
Output is correct |
46 |
Correct |
79 ms |
1560 KB |
Output is correct |
47 |
Correct |
84 ms |
1600 KB |
Output is correct |
48 |
Correct |
76 ms |
1596 KB |
Output is correct |
49 |
Correct |
127 ms |
4080 KB |
Output is correct |
50 |
Correct |
1 ms |
340 KB |
Output is correct |
51 |
Correct |
1 ms |
332 KB |
Output is correct |
52 |
Correct |
79 ms |
1484 KB |
Output is correct |
53 |
Correct |
77 ms |
1492 KB |
Output is correct |
54 |
Correct |
75 ms |
1460 KB |
Output is correct |
55 |
Correct |
73 ms |
1364 KB |
Output is correct |
56 |
Correct |
77 ms |
1304 KB |
Output is correct |
57 |
Correct |
1 ms |
340 KB |
Output is correct |
58 |
Correct |
13 ms |
1028 KB |
Output is correct |
59 |
Correct |
13 ms |
984 KB |
Output is correct |
60 |
Correct |
11 ms |
980 KB |
Output is correct |
61 |
Correct |
130 ms |
4112 KB |
Output is correct |
62 |
Correct |
125 ms |
4140 KB |
Output is correct |
63 |
Correct |
0 ms |
340 KB |
Output is correct |