oj.uz

답안 #972215

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
972215 2024-04-30T08:48:04 Z vjudge1 여행하는 상인 (APIO17_merchant) C++14
0 / 100
 54 ms 3404 KB 
#include<bits/stdc++.h>

using namespace std;

#define int long long

const int N=110, K=1010, inf=1e18;
int n, m, k;
int b[N][K], s[N][K];
vector<pair<pair<int, int>, int>> e;
int d[N][N];
int g[N][N];
int f[N][N];

bool check(int mid){
   for (int i=1; i<=n; ++i) for (int j=1; j<=n; ++j){
      f[i][j]=inf;
      if (d[i][j]!=inf && d[i][j]<inf/mid) f[i][j]=mid*d[i][j]-g[i][j];
   }
   for (int k=1; k<=n; ++k) for (int i=1; i<=n; ++i) for (int j=1; j<=n; ++j){
      f[i][j]=min(f[i][j], f[i][k]+f[k][j]);
   }
   return f[1][1]<=0;
}

int32_t main(){
   ios_base::sync_with_stdio(false);
   cin.tie(nullptr);
   cin >> n >> m >> k;
   for (int i=1; i<=n; ++i) for (int j=1; j<=k; ++j) cin >> b[i][j] >> s[i][j];
   e.resize(m);
   for (int i=1; i<=n; ++i) for (int j=1; j<=n; ++j) d[i][j]=inf;
   for (auto &i:e){
      cin >> i.first.first >> i.first.second >> i.second;
      d[i.first.first][i.first.second]=min(d[i.first.first][i.first.second], i.second);
   }
   for (int k=1; k<=n; ++k) for (int i=1; i<=n; ++i) for (int j=1; j<=n; ++j){
      if (d[i][k]!=inf && d[k][j]!=inf) d[i][j]=min(d[i][j], d[i][k]+d[k][j]);
   }
   for (int i=1; i<=k; ++i){
      for (int u=1; u<=n; ++u) for (int v=1; v<=n; ++v) if (b[u][k]!=-1 && s[v][k]!=-1 && b[u][k]<s[v][k]){
         g[u][v]=max(g[u][v], s[v][k]-b[u][k]);
      }
   }
   int l=1, r=1e9;
   while (l<=r){
      int mid=(l+r)>>1;
      if (check(mid)) l=mid+1;
      else r=mid-1;
   }
   cout << r << '\n';
   return 0;
}

Subtask #1
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 54 ms 3404 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 5 ms 860 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 35 ms 1628 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 5 ms 860 KB Output isn't correct
2 Halted 0 ms 0 KB -