# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
49745 | 2018-06-02T14:17:39 Z | top34051 | Travelling Merchant (APIO17_merchant) | C++17 | 122 ms | 2168 KB |
#include<bits/stdc++.h> using namespace std; const long long inf = 1e18; int n,m,k; long long a[105][1005], b[105][1005]; long long profit[105][105], dist[105][105]; long long ok[105][105]; bool check(long long val) { for(int i=1;i<=n;i++) { for(int j=1;j<=n;j++) { if(profit[i][j]==-inf || dist[i][j]==inf) ok[i][j] = -inf; else ok[i][j] = profit[i][j] - val * dist[i][j]; } } for(int x=1;x<=n;x++) { for(int i=1;i<=n;i++) { for(int j=1;j<=n;j++) { ok[i][j] = max(ok[i][j], ok[i][x] + ok[x][j]); } } } for(int i=1;i<=n;i++) if(ok[i][i]>=0) return 1; return 0; } int main() { int i,j,x,y; long long val; scanf("%d%d%d",&n,&m,&k); for(int i=1;i<=n;i++) { for(int j=1;j<=k;j++) { scanf("%lld%lld",&a[i][j],&b[i][j]); } } for(int i=1;i<=n;i++) { for(int j=1;j<=n;j++) { dist[i][j] = inf; profit[i][j] = -inf; } } for(int i=1;i<=m;i++) { scanf("%d%d%lld",&x,&y,&val); dist[x][y] = min(dist[x][y], val); dist[y][x] = min(dist[y][x], val); } //get dist[x][y] for(int x=1;x<=n;x++) { for(int i=1;i<=n;i++) { for(int j=1;j<=n;j++) { dist[i][j] = min(dist[i][j], dist[i][x] + dist[x][j]); } } } //get profit[x][y] for(int i=1;i<=n;i++) { for(int j=1;j<=n;j++) { for(int x=1;x<=k;x++) { if(a[i][x]==-1 || b[j][x]==-1) continue; profit[i][j] = max(profit[i][j], b[j][x] - a[i][x]); } } } //find answer long long l = 0, r = inf, mid, ans; while(l<=r) { mid = (l+r)/2; if(check(mid)) { ans = mid; l = mid+1; } else r = mid-1; } printf("%lld",ans); }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 122 ms | 2168 KB | Output isn't correct |
2 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 14 ms | 2168 KB | Output isn't correct |
2 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 96 ms | 2168 KB | Output isn't correct |
2 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 14 ms | 2168 KB | Output isn't correct |
2 | Halted | 0 ms | 0 KB | - |