#include <bits/stdc++.h>
using namespace std;
#define long long long
const int N = 105;
const int I = 1005;
const long inf = 1e18;
long n, m, item, x, y, z, dis[N][N], fin[N][N], val[N][N], b[N][I], s[N][I];
int main() {
scanf(" %lld %lld %lld", &n, &m, &item);
for (int i=1; i<=n; i++) for (int j=1; j<=item; j++) scanf(" %lld %lld", &b[i][j], &s[i][j]);
fill_n(dis[0], N*N, inf);
while (m--) {
scanf(" %lld %lld %lld", &x, &y, &z);
dis[x][y] = z;
}
for (int k=1; k<=n; k++) for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) {
dis[i][j] = min(dis[i][j], dis[i][k] + dis[k][j]);
}
for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) for (int k=1; k<=item; k++) {
if (b[i][k]!=-1 && s[j][k]!=-1) val[i][j] = max(val[i][j], s[j][k] - b[i][k]);
}
// for (int i=1; i<=n; i++) {for (int j=1; j<=n; j++) printf("%lld " , dis[i][j]); printf("\n");}
// for (int i=1; i<=n; i++) {for (int j=1; j<=n; j++) printf("%lld " , val[i][j]); printf("\n");}
long l=1, r=1e9;
while (l <= r) {
long mid = (l+r)>>1;
// printf("%lld %lld %lld\n", l, mid, r);
for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) fin[i][j] = mid * min(dis[i][j], inf/mid) - val[i][j];
for (int k=1; k<=n; k++) for (int i=1; i<=n; i++) for (int j=1; j<=n; j++) {
fin[i][j] = min(fin[i][j], fin[i][k] + fin[k][j]);
}
bool ok = false;
for (int i=1; i<=n; i++) if (fin[i][i] <= 0) {ok=true; break;}
if (ok) l = mid+1;
else r = mid-1;
}
printf("%lld", r);
return 0;
}
Compilation message
merchant.cpp: In function 'int main()':
merchant.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
12 | scanf(" %lld %lld %lld", &n, &m, &item);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
merchant.cpp:13:63: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
13 | for (int i=1; i<=n; i++) for (int j=1; j<=item; j++) scanf(" %lld %lld", &b[i][j], &s[i][j]);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
merchant.cpp:16:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
16 | scanf(" %lld %lld %lld", &x, &y, &z);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
58 ms |
1996 KB |
Output is correct |
| 2 |
Correct |
32 ms |
1236 KB |
Output is correct |
| 3 |
Correct |
34 ms |
1236 KB |
Output is correct |
| 4 |
Correct |
5 ms |
724 KB |
Output is correct |
| 5 |
Correct |
5 ms |
724 KB |
Output is correct |
| 6 |
Correct |
5 ms |
724 KB |
Output is correct |
| 7 |
Correct |
6 ms |
852 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
5 ms |
724 KB |
Output is correct |
| 10 |
Correct |
5 ms |
852 KB |
Output is correct |
| 11 |
Correct |
5 ms |
724 KB |
Output is correct |
| 12 |
Correct |
1 ms |
468 KB |
Output is correct |
| 13 |
Correct |
5 ms |
852 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
724 KB |
Output is correct |
| 2 |
Correct |
6 ms |
852 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
5 ms |
724 KB |
Output is correct |
| 5 |
Correct |
5 ms |
852 KB |
Output is correct |
| 6 |
Correct |
5 ms |
724 KB |
Output is correct |
| 7 |
Correct |
1 ms |
468 KB |
Output is correct |
| 8 |
Correct |
5 ms |
852 KB |
Output is correct |
| 9 |
Correct |
5 ms |
892 KB |
Output is correct |
| 10 |
Correct |
5 ms |
888 KB |
Output is correct |
| 11 |
Correct |
5 ms |
852 KB |
Output is correct |
| 12 |
Correct |
5 ms |
852 KB |
Output is correct |
| 13 |
Correct |
6 ms |
852 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
5 ms |
852 KB |
Output is correct |
| 16 |
Correct |
6 ms |
852 KB |
Output is correct |
| 17 |
Correct |
5 ms |
852 KB |
Output is correct |
| 18 |
Correct |
6 ms |
852 KB |
Output is correct |
| 19 |
Correct |
6 ms |
924 KB |
Output is correct |
| 20 |
Correct |
6 ms |
932 KB |
Output is correct |
| 21 |
Correct |
7 ms |
852 KB |
Output is correct |
| 22 |
Correct |
5 ms |
852 KB |
Output is correct |
| 23 |
Correct |
6 ms |
852 KB |
Output is correct |
| 24 |
Correct |
5 ms |
852 KB |
Output is correct |
| 25 |
Correct |
6 ms |
852 KB |
Output is correct |
| 26 |
Correct |
0 ms |
340 KB |
Output is correct |
| 27 |
Correct |
6 ms |
928 KB |
Output is correct |
| 28 |
Correct |
6 ms |
852 KB |
Output is correct |
| 29 |
Correct |
6 ms |
864 KB |
Output is correct |
| 30 |
Correct |
5 ms |
852 KB |
Output is correct |
| 31 |
Correct |
5 ms |
852 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
852 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
6 ms |
928 KB |
Output is correct |
| 4 |
Correct |
6 ms |
852 KB |
Output is correct |
| 5 |
Correct |
6 ms |
864 KB |
Output is correct |
| 6 |
Correct |
5 ms |
852 KB |
Output is correct |
| 7 |
Correct |
5 ms |
852 KB |
Output is correct |
| 8 |
Correct |
40 ms |
1492 KB |
Output is correct |
| 9 |
Correct |
87 ms |
2112 KB |
Output is correct |
| 10 |
Correct |
39 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
40 ms |
1400 KB |
Output is correct |
| 12 |
Correct |
39 ms |
1492 KB |
Output is correct |
| 13 |
Correct |
35 ms |
1428 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
892 KB |
Output is correct |
| 2 |
Correct |
5 ms |
888 KB |
Output is correct |
| 3 |
Correct |
5 ms |
852 KB |
Output is correct |
| 4 |
Correct |
5 ms |
852 KB |
Output is correct |
| 5 |
Correct |
6 ms |
852 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
5 ms |
852 KB |
Output is correct |
| 8 |
Correct |
6 ms |
852 KB |
Output is correct |
| 9 |
Correct |
5 ms |
852 KB |
Output is correct |
| 10 |
Correct |
6 ms |
852 KB |
Output is correct |
| 11 |
Correct |
6 ms |
924 KB |
Output is correct |
| 12 |
Correct |
6 ms |
932 KB |
Output is correct |
| 13 |
Correct |
7 ms |
852 KB |
Output is correct |
| 14 |
Correct |
5 ms |
852 KB |
Output is correct |
| 15 |
Correct |
6 ms |
852 KB |
Output is correct |
| 16 |
Correct |
5 ms |
852 KB |
Output is correct |
| 17 |
Correct |
40 ms |
1492 KB |
Output is correct |
| 18 |
Correct |
87 ms |
2112 KB |
Output is correct |
| 19 |
Correct |
39 ms |
1408 KB |
Output is correct |
| 20 |
Correct |
40 ms |
1400 KB |
Output is correct |
| 21 |
Correct |
39 ms |
1492 KB |
Output is correct |
| 22 |
Correct |
35 ms |
1428 KB |
Output is correct |
| 23 |
Correct |
6 ms |
852 KB |
Output is correct |
| 24 |
Correct |
0 ms |
340 KB |
Output is correct |
| 25 |
Correct |
6 ms |
928 KB |
Output is correct |
| 26 |
Correct |
6 ms |
852 KB |
Output is correct |
| 27 |
Correct |
6 ms |
864 KB |
Output is correct |
| 28 |
Correct |
5 ms |
852 KB |
Output is correct |
| 29 |
Correct |
5 ms |
852 KB |
Output is correct |
| 30 |
Correct |
58 ms |
1996 KB |
Output is correct |
| 31 |
Correct |
32 ms |
1236 KB |
Output is correct |
| 32 |
Correct |
34 ms |
1236 KB |
Output is correct |
| 33 |
Correct |
5 ms |
724 KB |
Output is correct |
| 34 |
Correct |
5 ms |
724 KB |
Output is correct |
| 35 |
Correct |
5 ms |
724 KB |
Output is correct |
| 36 |
Correct |
6 ms |
852 KB |
Output is correct |
| 37 |
Correct |
0 ms |
340 KB |
Output is correct |
| 38 |
Correct |
5 ms |
724 KB |
Output is correct |
| 39 |
Correct |
5 ms |
852 KB |
Output is correct |
| 40 |
Correct |
5 ms |
724 KB |
Output is correct |
| 41 |
Correct |
1 ms |
468 KB |
Output is correct |
| 42 |
Correct |
5 ms |
852 KB |
Output is correct |
| 43 |
Correct |
34 ms |
1364 KB |
Output is correct |
| 44 |
Correct |
37 ms |
1492 KB |
Output is correct |
| 45 |
Correct |
54 ms |
2120 KB |
Output is correct |
| 46 |
Correct |
39 ms |
1504 KB |
Output is correct |
| 47 |
Correct |
37 ms |
1492 KB |
Output is correct |
| 48 |
Correct |
36 ms |
1492 KB |
Output is correct |
| 49 |
Correct |
87 ms |
2116 KB |
Output is correct |
| 50 |
Correct |
1 ms |
512 KB |
Output is correct |
| 51 |
Correct |
1 ms |
468 KB |
Output is correct |
| 52 |
Correct |
35 ms |
1236 KB |
Output is correct |
| 53 |
Correct |
36 ms |
1236 KB |
Output is correct |
| 54 |
Correct |
35 ms |
1364 KB |
Output is correct |
| 55 |
Correct |
34 ms |
1376 KB |
Output is correct |
| 56 |
Correct |
34 ms |
1236 KB |
Output is correct |
| 57 |
Correct |
0 ms |
340 KB |
Output is correct |
| 58 |
Correct |
7 ms |
852 KB |
Output is correct |
| 59 |
Correct |
7 ms |
852 KB |
Output is correct |
| 60 |
Correct |
8 ms |
852 KB |
Output is correct |
| 61 |
Correct |
91 ms |
2096 KB |
Output is correct |
| 62 |
Correct |
91 ms |
2092 KB |
Output is correct |
| 63 |
Correct |
0 ms |
340 KB |
Output is correct |
