#include <iostream>
using namespace std;
#define ll long long
int n, m, k;
const ll inf = 1e18 + 69;
ll dist[105][105], profit[105][105];
ll res[105][105];
ll buy[105][1005], sell[105][1005];
bool check(ll penalty){
for(int u = 1; u <= n; u ++) for(int v = 1; v <= n; v ++){
if(dist[u][v] == inf) res[u][v] = -inf;
else res[u][v] = max((ll)profit[u][v] - dist[u][v] * 1ll * penalty, -inf);
}
for(int u = 1; u <= n; u ++) res[u][u] = -inf;
ll ans = -inf;
for(int z = 1; z <= n; z ++){
for(int x = 1; x <= n; x ++) for(int y = 1; y <= n; y ++){
res[x][y] = max(res[x][z] + res[z][y], res[x][y]);
ans = max(ans, res[x][x]);
}
}
if(ans >= 0ll) return true;
return false;
}
int main(){
ios_base::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 <= n; j ++){
if(i != j) dist[i][j] = inf;
else dist[i][j] = 0;
}
for(int i = 1; i <= n; i ++)
for(int j = 1; j <= k; j ++)
cin >> buy[i][j] >> sell[i][j];
for(int u, v, wt, i = 1; i <= m; i ++){
cin >> u >> v >> wt;
dist[u][v] = wt;
}
for(int z = 1; z <= n; z ++)
for(int x = 1; x <= n; x ++)
for(int y = 1; y <= n; y ++)
dist[x][y] = min(dist[x][y], dist[x][z] + dist[z][y]);
for(int x = 1; x <= n; x ++)
for(int y = 1; y <= n; y ++){
profit[x][y] = 0ll;
if(x != y)
for(int z = 1; z <= k; z ++){
if(buy[x][z] == -1 || sell[y][z] == -1) continue;
profit[x][y] = max(profit[x][y], sell[y][z] - buy[x][z]);
}
}
ll lf = 1, rg = 1000000007ll, res = 0ll;
for(int md; lf <= rg;){
md = (lf + rg) / 2;
if(check(md)){
res = md;
lf = md + 1;
}else{
rg = md - 1;
}
}
cout << res << endl;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
75 ms |
3448 KB |
Output is correct |
| 2 |
Correct |
47 ms |
1408 KB |
Output is correct |
| 3 |
Correct |
49 ms |
1408 KB |
Output is correct |
| 4 |
Correct |
10 ms |
1024 KB |
Output is correct |
| 5 |
Correct |
7 ms |
896 KB |
Output is correct |
| 6 |
Correct |
7 ms |
896 KB |
Output is correct |
| 7 |
Correct |
8 ms |
928 KB |
Output is correct |
| 8 |
Correct |
0 ms |
384 KB |
Output is correct |
| 9 |
Correct |
10 ms |
896 KB |
Output is correct |
| 10 |
Correct |
11 ms |
896 KB |
Output is correct |
| 11 |
Correct |
7 ms |
896 KB |
Output is correct |
| 12 |
Correct |
1 ms |
512 KB |
Output is correct |
| 13 |
Correct |
8 ms |
896 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
7 ms |
896 KB |
Output is correct |
| 2 |
Correct |
8 ms |
896 KB |
Output is correct |
| 3 |
Correct |
8 ms |
896 KB |
Output is correct |
| 4 |
Correct |
7 ms |
896 KB |
Output is correct |
| 5 |
Correct |
8 ms |
896 KB |
Output is correct |
| 6 |
Correct |
0 ms |
384 KB |
Output is correct |
| 7 |
Correct |
10 ms |
896 KB |
Output is correct |
| 8 |
Correct |
7 ms |
896 KB |
Output is correct |
| 9 |
Correct |
7 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 |
8 ms |
896 KB |
Output is correct |
| 13 |
Correct |
9 ms |
896 KB |
Output is correct |
| 14 |
Correct |
8 ms |
896 KB |
Output is correct |
| 15 |
Correct |
9 ms |
896 KB |
Output is correct |
| 16 |
Correct |
7 ms |
896 KB |
Output is correct |
| 17 |
Correct |
8 ms |
896 KB |
Output is correct |
| 18 |
Correct |
1 ms |
384 KB |
Output is correct |
| 19 |
Correct |
9 ms |
896 KB |
Output is correct |
| 20 |
Correct |
9 ms |
896 KB |
Output is correct |
| 21 |
Correct |
8 ms |
896 KB |
Output is correct |
| 22 |
Correct |
7 ms |
896 KB |
Output is correct |
| 23 |
Correct |
7 ms |
896 KB |
Output is correct |
| 24 |
Correct |
7 ms |
896 KB |
Output is correct |
| 25 |
Correct |
8 ms |
928 KB |
Output is correct |
| 26 |
Correct |
0 ms |
384 KB |
Output is correct |
| 27 |
Correct |
10 ms |
896 KB |
Output is correct |
| 28 |
Correct |
11 ms |
896 KB |
Output is correct |
| 29 |
Correct |
7 ms |
896 KB |
Output is correct |
| 30 |
Correct |
1 ms |
512 KB |
Output is correct |
| 31 |
Correct |
8 ms |
896 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
54 ms |
1664 KB |
Output is correct |
| 2 |
Correct |
107 ms |
3960 KB |
Output is correct |
| 3 |
Correct |
52 ms |
1536 KB |
Output is correct |
| 4 |
Correct |
55 ms |
1792 KB |
Output is correct |
| 5 |
Correct |
55 ms |
1792 KB |
Output is correct |
| 6 |
Correct |
50 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
8 ms |
896 KB |
Output is correct |
| 8 |
Correct |
1 ms |
384 KB |
Output is correct |
| 9 |
Correct |
9 ms |
896 KB |
Output is correct |
| 10 |
Correct |
9 ms |
896 KB |
Output is correct |
| 11 |
Correct |
8 ms |
896 KB |
Output is correct |
| 12 |
Correct |
7 ms |
896 KB |
Output is correct |
| 13 |
Correct |
7 ms |
896 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
7 ms |
896 KB |
Output is correct |
| 2 |
Correct |
8 ms |
896 KB |
Output is correct |
| 3 |
Correct |
8 ms |
896 KB |
Output is correct |
| 4 |
Correct |
7 ms |
896 KB |
Output is correct |
| 5 |
Correct |
8 ms |
896 KB |
Output is correct |
| 6 |
Correct |
0 ms |
384 KB |
Output is correct |
| 7 |
Correct |
10 ms |
896 KB |
Output is correct |
| 8 |
Correct |
7 ms |
896 KB |
Output is correct |
| 9 |
Correct |
7 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 |
8 ms |
896 KB |
Output is correct |
| 13 |
Correct |
9 ms |
896 KB |
Output is correct |
| 14 |
Correct |
8 ms |
896 KB |
Output is correct |
| 15 |
Correct |
9 ms |
896 KB |
Output is correct |
| 16 |
Correct |
7 ms |
896 KB |
Output is correct |
| 17 |
Correct |
54 ms |
1664 KB |
Output is correct |
| 18 |
Correct |
107 ms |
3960 KB |
Output is correct |
| 19 |
Correct |
52 ms |
1536 KB |
Output is correct |
| 20 |
Correct |
55 ms |
1792 KB |
Output is correct |
| 21 |
Correct |
55 ms |
1792 KB |
Output is correct |
| 22 |
Correct |
50 ms |
1536 KB |
Output is correct |
| 23 |
Correct |
8 ms |
896 KB |
Output is correct |
| 24 |
Correct |
1 ms |
384 KB |
Output is correct |
| 25 |
Correct |
9 ms |
896 KB |
Output is correct |
| 26 |
Correct |
9 ms |
896 KB |
Output is correct |
| 27 |
Correct |
8 ms |
896 KB |
Output is correct |
| 28 |
Correct |
7 ms |
896 KB |
Output is correct |
| 29 |
Correct |
7 ms |
896 KB |
Output is correct |
| 30 |
Correct |
51 ms |
1484 KB |
Output is correct |
| 31 |
Correct |
51 ms |
1536 KB |
Output is correct |
| 32 |
Correct |
71 ms |
2680 KB |
Output is correct |
| 33 |
Correct |
51 ms |
1536 KB |
Output is correct |
| 34 |
Correct |
53 ms |
1536 KB |
Output is correct |
| 35 |
Correct |
53 ms |
1536 KB |
Output is correct |
| 36 |
Correct |
119 ms |
4076 KB |
Output is correct |
| 37 |
Correct |
1 ms |
384 KB |
Output is correct |
| 38 |
Correct |
1 ms |
384 KB |
Output is correct |
| 39 |
Correct |
53 ms |
1408 KB |
Output is correct |
| 40 |
Correct |
51 ms |
1536 KB |
Output is correct |
| 41 |
Correct |
61 ms |
1536 KB |
Output is correct |
| 42 |
Correct |
61 ms |
1408 KB |
Output is correct |
| 43 |
Correct |
49 ms |
1460 KB |
Output is correct |
| 44 |
Correct |
0 ms |
384 KB |
Output is correct |
| 45 |
Correct |
16 ms |
1024 KB |
Output is correct |
| 46 |
Correct |
16 ms |
1024 KB |
Output is correct |
| 47 |
Correct |
10 ms |
1024 KB |
Output is correct |
| 48 |
Correct |
113 ms |
4220 KB |
Output is correct |
| 49 |
Correct |
117 ms |
4216 KB |
Output is correct |
| 50 |
Correct |
1 ms |
384 KB |
Output is correct |
| 51 |
Correct |
75 ms |
3448 KB |
Output is correct |
| 52 |
Correct |
47 ms |
1408 KB |
Output is correct |
| 53 |
Correct |
49 ms |
1408 KB |
Output is correct |
| 54 |
Correct |
10 ms |
1024 KB |
Output is correct |
| 55 |
Correct |
7 ms |
896 KB |
Output is correct |
| 56 |
Correct |
7 ms |
896 KB |
Output is correct |
| 57 |
Correct |
8 ms |
928 KB |
Output is correct |
| 58 |
Correct |
0 ms |
384 KB |
Output is correct |
| 59 |
Correct |
10 ms |
896 KB |
Output is correct |
| 60 |
Correct |
11 ms |
896 KB |
Output is correct |
| 61 |
Correct |
7 ms |
896 KB |
Output is correct |
| 62 |
Correct |
1 ms |
512 KB |
Output is correct |
| 63 |
Correct |
8 ms |
896 KB |
Output is correct |
