#include <bits/stdc++.h>
using namespace std;
#define log(x) (63^__builtin_clzll(x))
#define endl '\n'
#define all(x) (x).begin() , (x).end()
const int mod = 1e9 + 7, lg = 22 , N = 1e6 + 1;
void solve() {
int n, m, k;
cin >> n >> m >> k;
vector<vector<int>> b(n, vector<int>(k)), s(n, vector<int>(k));
for(int i = 0; i < n; ++i)
for(int item = 0; item < k; ++item)
cin >> b[i][item] >> s[i][item];
vector<vector<int>> dis(n, vector<int>(n, 1e9)), maxGain(n, vector<int>(n, 0));
for(int i = 0; i < m; ++i) {
int u, v, len;
cin >> u >> v >> len;
--u, --v;
dis[u][v] = min(dis[u][v], len);
}
for(int mid = 0; mid < n; ++mid)
for(int start = 0; start < n; ++start)
for(int end = 0; end < n; ++end)
dis[start][end] = min(dis[start][end], dis[start][mid] + dis[mid][end]);
for(int i = 0; i < n; ++i) {
for(int j = 0; j < n; ++j) {
if(dis[i][j] == 1e9) continue;
for(int item = 0; item < k; ++item)
if(s[j][item] != -1 && b[i][item] != -1)
maxGain[i][j] = max(maxGain[i][j], s[j][item] - b[i][item]);
}
}
int l = 0, r = 1e9;
while(l <= r) {
int mid = (l + r) / 2;
vector<vector<long long>> dp(n, vector<long long>(n, -1e18));
for(int i = 0; i < n; ++i) {
for(int j = 0; j < n; ++j) {
if(dis[i][j] == 1e9) continue;
dp[i][j] = max(dp[i][j], (long long)maxGain[i][j] - (long long)dis[i][j] * mid);
}
}
for(int mid = 0; mid < n; ++mid)
for(int start = 0; start < n; ++start)
for(int end = 0; end < n; ++end)
dp[start][end] = max(dp[start][end], dp[start][mid] + dp[mid][end]);
int ok = 0;
for(int i = 0; i < n; ++i) {
if(dp[i][i] >= 0) ok = 1;
}
if(ok) l = mid + 1;
else r = mid - 1;
}
cout << max(0, l - 1) << endl;
return;
}
main() {
ios_base::sync_with_stdio(false);cout.tie(nullptr);cin.tie(nullptr);
int t;
//cin >> t;
t = 1;
while(t--) solve();
return 0;
}
Compilation message
merchant.cpp:69:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
69 | main() {
| ^~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
45 ms |
1372 KB |
Output is correct |
2 |
Correct |
27 ms |
604 KB |
Output is correct |
3 |
Correct |
27 ms |
856 KB |
Output is correct |
4 |
Correct |
4 ms |
600 KB |
Output is correct |
5 |
Correct |
4 ms |
508 KB |
Output is correct |
6 |
Correct |
4 ms |
344 KB |
Output is correct |
7 |
Correct |
4 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
4 ms |
348 KB |
Output is correct |
10 |
Correct |
4 ms |
344 KB |
Output is correct |
11 |
Correct |
4 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
4 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
344 KB |
Output is correct |
2 |
Correct |
4 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
4 ms |
348 KB |
Output is correct |
5 |
Correct |
4 ms |
344 KB |
Output is correct |
6 |
Correct |
4 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
4 ms |
348 KB |
Output is correct |
9 |
Correct |
4 ms |
352 KB |
Output is correct |
10 |
Correct |
4 ms |
348 KB |
Output is correct |
11 |
Correct |
4 ms |
348 KB |
Output is correct |
12 |
Correct |
4 ms |
348 KB |
Output is correct |
13 |
Correct |
4 ms |
524 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
4 ms |
348 KB |
Output is correct |
16 |
Correct |
4 ms |
524 KB |
Output is correct |
17 |
Correct |
4 ms |
348 KB |
Output is correct |
18 |
Correct |
4 ms |
348 KB |
Output is correct |
19 |
Correct |
4 ms |
348 KB |
Output is correct |
20 |
Correct |
4 ms |
348 KB |
Output is correct |
21 |
Correct |
4 ms |
348 KB |
Output is correct |
22 |
Correct |
4 ms |
348 KB |
Output is correct |
23 |
Correct |
5 ms |
348 KB |
Output is correct |
24 |
Correct |
4 ms |
348 KB |
Output is correct |
25 |
Correct |
5 ms |
532 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
4 ms |
348 KB |
Output is correct |
28 |
Correct |
7 ms |
348 KB |
Output is correct |
29 |
Correct |
6 ms |
348 KB |
Output is correct |
30 |
Correct |
4 ms |
348 KB |
Output is correct |
31 |
Correct |
3 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
532 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
4 ms |
348 KB |
Output is correct |
4 |
Correct |
7 ms |
348 KB |
Output is correct |
5 |
Correct |
6 ms |
348 KB |
Output is correct |
6 |
Correct |
4 ms |
348 KB |
Output is correct |
7 |
Correct |
3 ms |
348 KB |
Output is correct |
8 |
Correct |
31 ms |
712 KB |
Output is correct |
9 |
Correct |
69 ms |
1168 KB |
Output is correct |
10 |
Correct |
29 ms |
604 KB |
Output is correct |
11 |
Correct |
31 ms |
716 KB |
Output is correct |
12 |
Correct |
32 ms |
604 KB |
Output is correct |
13 |
Correct |
29 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
352 KB |
Output is correct |
2 |
Correct |
4 ms |
348 KB |
Output is correct |
3 |
Correct |
4 ms |
348 KB |
Output is correct |
4 |
Correct |
4 ms |
348 KB |
Output is correct |
5 |
Correct |
4 ms |
524 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
4 ms |
348 KB |
Output is correct |
8 |
Correct |
4 ms |
524 KB |
Output is correct |
9 |
Correct |
4 ms |
348 KB |
Output is correct |
10 |
Correct |
4 ms |
348 KB |
Output is correct |
11 |
Correct |
4 ms |
348 KB |
Output is correct |
12 |
Correct |
4 ms |
348 KB |
Output is correct |
13 |
Correct |
4 ms |
348 KB |
Output is correct |
14 |
Correct |
4 ms |
348 KB |
Output is correct |
15 |
Correct |
5 ms |
348 KB |
Output is correct |
16 |
Correct |
4 ms |
348 KB |
Output is correct |
17 |
Correct |
31 ms |
712 KB |
Output is correct |
18 |
Correct |
69 ms |
1168 KB |
Output is correct |
19 |
Correct |
29 ms |
604 KB |
Output is correct |
20 |
Correct |
31 ms |
716 KB |
Output is correct |
21 |
Correct |
32 ms |
604 KB |
Output is correct |
22 |
Correct |
29 ms |
604 KB |
Output is correct |
23 |
Correct |
5 ms |
532 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
4 ms |
348 KB |
Output is correct |
26 |
Correct |
7 ms |
348 KB |
Output is correct |
27 |
Correct |
6 ms |
348 KB |
Output is correct |
28 |
Correct |
4 ms |
348 KB |
Output is correct |
29 |
Correct |
3 ms |
348 KB |
Output is correct |
30 |
Correct |
45 ms |
1372 KB |
Output is correct |
31 |
Correct |
27 ms |
604 KB |
Output is correct |
32 |
Correct |
27 ms |
856 KB |
Output is correct |
33 |
Correct |
4 ms |
600 KB |
Output is correct |
34 |
Correct |
4 ms |
508 KB |
Output is correct |
35 |
Correct |
4 ms |
344 KB |
Output is correct |
36 |
Correct |
4 ms |
348 KB |
Output is correct |
37 |
Correct |
0 ms |
348 KB |
Output is correct |
38 |
Correct |
4 ms |
348 KB |
Output is correct |
39 |
Correct |
4 ms |
344 KB |
Output is correct |
40 |
Correct |
4 ms |
348 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
4 ms |
348 KB |
Output is correct |
43 |
Correct |
27 ms |
856 KB |
Output is correct |
44 |
Correct |
29 ms |
600 KB |
Output is correct |
45 |
Correct |
40 ms |
1116 KB |
Output is correct |
46 |
Correct |
30 ms |
700 KB |
Output is correct |
47 |
Correct |
29 ms |
604 KB |
Output is correct |
48 |
Correct |
28 ms |
712 KB |
Output is correct |
49 |
Correct |
73 ms |
1388 KB |
Output is correct |
50 |
Correct |
0 ms |
348 KB |
Output is correct |
51 |
Correct |
0 ms |
348 KB |
Output is correct |
52 |
Correct |
28 ms |
636 KB |
Output is correct |
53 |
Correct |
28 ms |
600 KB |
Output is correct |
54 |
Correct |
27 ms |
604 KB |
Output is correct |
55 |
Correct |
29 ms |
656 KB |
Output is correct |
56 |
Correct |
28 ms |
604 KB |
Output is correct |
57 |
Correct |
0 ms |
348 KB |
Output is correct |
58 |
Correct |
5 ms |
348 KB |
Output is correct |
59 |
Correct |
5 ms |
344 KB |
Output is correct |
60 |
Correct |
4 ms |
348 KB |
Output is correct |
61 |
Correct |
78 ms |
1504 KB |
Output is correct |
62 |
Correct |
78 ms |
1364 KB |
Output is correct |
63 |
Correct |
0 ms |
344 KB |
Output is correct |