Submission #50089

#	Time	Username	Problem	Language	Result	Execution time	Memory
50089		mohammad_kilani	Travelling Merchant (APIO17_merchant)	C++17	0 / 100	30 ms	520 KiB

merchant

#include <bits/stdc++.h>
using namespace std;
#define mod 1000000007
#define oo 1000000000
const int N = 150;
int dist[N][N] ; 
int b[N][N] , s[N][N];
int n , m , k , u , v , w;
int main() {
    scanf("%d%d%d",&n,&m,&k);
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            if(i != j)
                dist[i][j] = oo;
        }
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=k;j++){
            scanf("%d%d",&b[i][j],&s[i][j]);
        }
    }
    for(int i=0;i<m;i++){
        scanf("%d%d%d",&u,&v,&w);
        dist[u][v] = min(dist[u][v],w);
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            for(int k=1;k<=n;k++){
                dist[j][k] = min(dist[j][k], dist[j][i] + dist[i][k]);
            }
        }
    }
    long long ans = 0;
    for(int i=2;i<=n;i++){
        for(int j=1;j<=k;j++){
            if(s[i][j] != -1 && b[1][j] != -1 && dist[1][i] != oo && dist[i][1] != oo)
                ans = max(ans, (long long)(s[i][j] - b[1][j]) / (dist[1][i] + dist[i][1]));
        }
    }
    int diss = oo ;
    for(int i=2;i<=n;i++){
        diss = min(diss,dist[1][i] + dist[i][1]);
    }
    int dis2 = 0;
    for(int i=1;i<=k;i++){
        if(b[1][i] != -1 && s[1][i] != -1)
            dis2 = max(dis2,(s[1][i] - b[1][i]));
    }
    ans = max(ans, (long long)dis2 / diss);
    cout << ans << endl;
    return 0;
}

Compilation message (stderr)

merchant.cpp: In function 'int main()':
merchant.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d",&n,&m,&k);
     ~~~~~^~~~~~~~~~~~~~~~~~~
merchant.cpp:19:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d%d",&b[i][j],&s[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
merchant.cpp:23:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d",&u,&v,&w);
         ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 21
• Subtask 3: 0 / 33
• Subtask 4: 0 / 34