/*input
4 5 2
10 9 5 2
6 4 20 15
9 7 10 9
-1 -1 16 11
1 2 3
2 3 3
1 4 1
4 3 1
3 1 1
*/
#include <iostream>
#include <vector>
#include <algorithm>
#include <cstdio>
#include <cstring>
using namespace std;
const int MAXN = 105, MAXK = 1005, INF = 1001001000;
const long long INFLL = 4e18;
int N, M, K;
int rawdist[MAXN][MAXN], gain[MAXN][MAXN], buy[MAXN][MAXK], sel[MAXN][MAXK];
long long curdist[MAXN][MAXN];
#define FOR(i, a, b) for (int i = a; i <= b; ++i)
bool check(long long val)
{
FOR(i, 1, N) FOR(j, 1, N) curdist[i][j] = rawdist[i][j] * val - gain[i][j];
FOR(k, 1, N) FOR(i, 1, N) FOR(j, 1, N) curdist[i][j] = min(curdist[i][j], max(-INFLL, curdist[i][k] + curdist[k][j]));
FOR(i, 1, N) FOR(j, 1, i - 1) if (curdist[i][j] + curdist[j][i] <= 0) return true;
return false;
}
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> N >> M >> K;
FOR(i, 1, N) FOR(j, 1, K) cin >> buy[i][j] >> sel[i][j];
FOR(i, 1, N) FOR(j, 1, N) rawdist[i][j] = INF;
FOR(i, 1, N) rawdist[i][i] = 0;
FOR(_, 0, M - 1) {
int u, v, w;
cin >> u >> v >> w;
rawdist[u][v] = min(rawdist[u][v], w);
}
FOR(k, 1, N) FOR(i, 1, N) FOR(j, 1, N) rawdist[i][j] = min(rawdist[i][j], rawdist[i][k] + rawdist[k][j]);
FOR(i, 1, N) FOR(j, 1, N) FOR(k, 1, K) if (~buy[i][k] && ~sel[j][k]) gain[i][j] = max(gain[i][j], sel[j][k] - buy[i][k]);
int lo = 0, hi = INF;
while (lo < hi) {
int mid = (lo + hi + 1) >> 1;
if (check(mid)) lo = mid;
else hi = mid - 1;
}
cout << lo << endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
78 ms |
1272 KB |
Output is correct |
2 |
Correct |
65 ms |
1400 KB |
Output is correct |
3 |
Correct |
49 ms |
1280 KB |
Output is correct |
4 |
Correct |
7 ms |
768 KB |
Output is correct |
5 |
Correct |
11 ms |
768 KB |
Output is correct |
6 |
Correct |
11 ms |
768 KB |
Output is correct |
7 |
Correct |
8 ms |
768 KB |
Output is correct |
8 |
Correct |
0 ms |
384 KB |
Output is correct |
9 |
Correct |
7 ms |
768 KB |
Output is correct |
10 |
Correct |
7 ms |
768 KB |
Output is correct |
11 |
Correct |
7 ms |
768 KB |
Output is correct |
12 |
Correct |
0 ms |
384 KB |
Output is correct |
13 |
Correct |
7 ms |
768 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
768 KB |
Output is correct |
2 |
Correct |
7 ms |
768 KB |
Output is correct |
3 |
Correct |
10 ms |
768 KB |
Output is correct |
4 |
Correct |
7 ms |
768 KB |
Output is correct |
5 |
Correct |
8 ms |
896 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
7 ms |
768 KB |
Output is correct |
8 |
Correct |
8 ms |
896 KB |
Output is correct |
9 |
Correct |
7 ms |
768 KB |
Output is correct |
10 |
Correct |
8 ms |
896 KB |
Output is correct |
11 |
Correct |
8 ms |
896 KB |
Output is correct |
12 |
Correct |
8 ms |
896 KB |
Output is correct |
13 |
Correct |
8 ms |
896 KB |
Output is correct |
14 |
Correct |
7 ms |
896 KB |
Output is correct |
15 |
Correct |
9 ms |
896 KB |
Output is correct |
16 |
Correct |
7 ms |
768 KB |
Output is correct |
17 |
Correct |
8 ms |
1024 KB |
Output is correct |
18 |
Correct |
0 ms |
384 KB |
Output is correct |
19 |
Correct |
8 ms |
896 KB |
Output is correct |
20 |
Correct |
8 ms |
896 KB |
Output is correct |
21 |
Correct |
8 ms |
896 KB |
Output is correct |
22 |
Correct |
11 ms |
896 KB |
Output is correct |
23 |
Correct |
7 ms |
768 KB |
Output is correct |
24 |
Correct |
11 ms |
768 KB |
Output is correct |
25 |
Correct |
8 ms |
768 KB |
Output is correct |
26 |
Correct |
0 ms |
384 KB |
Output is correct |
27 |
Correct |
7 ms |
768 KB |
Output is correct |
28 |
Correct |
7 ms |
768 KB |
Output is correct |
29 |
Correct |
7 ms |
768 KB |
Output is correct |
30 |
Correct |
0 ms |
384 KB |
Output is correct |
31 |
Correct |
7 ms |
768 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
56 ms |
1400 KB |
Output is correct |
2 |
Correct |
107 ms |
1656 KB |
Output is correct |
3 |
Correct |
52 ms |
1528 KB |
Output is correct |
4 |
Correct |
55 ms |
1536 KB |
Output is correct |
5 |
Correct |
60 ms |
1536 KB |
Output is correct |
6 |
Correct |
52 ms |
1408 KB |
Output is correct |
7 |
Correct |
8 ms |
1024 KB |
Output is correct |
8 |
Correct |
0 ms |
384 KB |
Output is correct |
9 |
Correct |
8 ms |
896 KB |
Output is correct |
10 |
Correct |
8 ms |
896 KB |
Output is correct |
11 |
Correct |
8 ms |
896 KB |
Output is correct |
12 |
Correct |
11 ms |
896 KB |
Output is correct |
13 |
Correct |
7 ms |
768 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
768 KB |
Output is correct |
2 |
Correct |
7 ms |
768 KB |
Output is correct |
3 |
Correct |
10 ms |
768 KB |
Output is correct |
4 |
Correct |
7 ms |
768 KB |
Output is correct |
5 |
Correct |
8 ms |
896 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
7 ms |
768 KB |
Output is correct |
8 |
Correct |
8 ms |
896 KB |
Output is correct |
9 |
Correct |
7 ms |
768 KB |
Output is correct |
10 |
Correct |
8 ms |
896 KB |
Output is correct |
11 |
Correct |
8 ms |
896 KB |
Output is correct |
12 |
Correct |
8 ms |
896 KB |
Output is correct |
13 |
Correct |
8 ms |
896 KB |
Output is correct |
14 |
Correct |
7 ms |
896 KB |
Output is correct |
15 |
Correct |
9 ms |
896 KB |
Output is correct |
16 |
Correct |
7 ms |
768 KB |
Output is correct |
17 |
Correct |
56 ms |
1400 KB |
Output is correct |
18 |
Correct |
107 ms |
1656 KB |
Output is correct |
19 |
Correct |
52 ms |
1528 KB |
Output is correct |
20 |
Correct |
55 ms |
1536 KB |
Output is correct |
21 |
Correct |
60 ms |
1536 KB |
Output is correct |
22 |
Correct |
52 ms |
1408 KB |
Output is correct |
23 |
Correct |
8 ms |
1024 KB |
Output is correct |
24 |
Correct |
0 ms |
384 KB |
Output is correct |
25 |
Correct |
8 ms |
896 KB |
Output is correct |
26 |
Correct |
8 ms |
896 KB |
Output is correct |
27 |
Correct |
8 ms |
896 KB |
Output is correct |
28 |
Correct |
11 ms |
896 KB |
Output is correct |
29 |
Correct |
7 ms |
768 KB |
Output is correct |
30 |
Correct |
49 ms |
1360 KB |
Output is correct |
31 |
Correct |
52 ms |
1408 KB |
Output is correct |
32 |
Correct |
68 ms |
1528 KB |
Output is correct |
33 |
Correct |
51 ms |
1408 KB |
Output is correct |
34 |
Correct |
51 ms |
1408 KB |
Output is correct |
35 |
Correct |
55 ms |
1408 KB |
Output is correct |
36 |
Correct |
115 ms |
1400 KB |
Output is correct |
37 |
Correct |
1 ms |
384 KB |
Output is correct |
38 |
Correct |
0 ms |
384 KB |
Output is correct |
39 |
Correct |
50 ms |
1280 KB |
Output is correct |
40 |
Correct |
52 ms |
1408 KB |
Output is correct |
41 |
Correct |
51 ms |
1280 KB |
Output is correct |
42 |
Correct |
53 ms |
1280 KB |
Output is correct |
43 |
Correct |
49 ms |
1280 KB |
Output is correct |
44 |
Correct |
0 ms |
384 KB |
Output is correct |
45 |
Correct |
10 ms |
896 KB |
Output is correct |
46 |
Correct |
10 ms |
896 KB |
Output is correct |
47 |
Correct |
10 ms |
896 KB |
Output is correct |
48 |
Correct |
115 ms |
1528 KB |
Output is correct |
49 |
Correct |
121 ms |
1528 KB |
Output is correct |
50 |
Correct |
1 ms |
396 KB |
Output is correct |
51 |
Correct |
78 ms |
1272 KB |
Output is correct |
52 |
Correct |
65 ms |
1400 KB |
Output is correct |
53 |
Correct |
49 ms |
1280 KB |
Output is correct |
54 |
Correct |
7 ms |
768 KB |
Output is correct |
55 |
Correct |
11 ms |
768 KB |
Output is correct |
56 |
Correct |
11 ms |
768 KB |
Output is correct |
57 |
Correct |
8 ms |
768 KB |
Output is correct |
58 |
Correct |
0 ms |
384 KB |
Output is correct |
59 |
Correct |
7 ms |
768 KB |
Output is correct |
60 |
Correct |
7 ms |
768 KB |
Output is correct |
61 |
Correct |
7 ms |
768 KB |
Output is correct |
62 |
Correct |
0 ms |
384 KB |
Output is correct |
63 |
Correct |
7 ms |
768 KB |
Output is correct |