Submission #49669

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
49669	2018-06-01 19:31:16	gs14004	Travelling Merchant (APIO17_merchant)	C++17	100 / 100	805 ms	1788 KiB

merchant

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#include <bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef long double llf;
typedef pair<lint, lint> pi;
int n, m, k;
int b[105][1005], s[105][1005];
int adj[105][105], dx[105][105];
llf gph[105][105];
bool trial(llf t){
  // TotalProfit - t * TotalTime > 0
  for(int i=1; i<=n; i++){
    for(int j=1; j<=n; j++){
      if(adj[i][j] > 1e9 + 10) gph[i][j] = -1e12;
      else gph[i][j] = dx[i][j] - t * adj[i][j];
    }
  }
  for(int i=1; i<=n; i++){
    for(int j=1; j<=n; j++){
      for(int k=1; k<=n; k++){
        gph[j][k] = max(gph[j][k], gph[j][i] + gph[i][k]);
      }
    }
  }
  for(int i=1; i<=n; i++){
    if(gph[i][i] >= 0) return 1;
  }
  return 0;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

merchant.cpp: In function 'int main()':
merchant.cpp:34:7: 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:36:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   for(int j=0; j<k; j++) scanf("%d %d",&b[i][j],&s[i][j]);
                          ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
merchant.cpp:41:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d",&s,&e,&x);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~

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