Submission #41087

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
41087	2018-02-12 15:09:04	kriii	Commuter Pass (JOI18_commuter_pass)	C++14	100 / 100	439 ms	15640 KiB

commuter_pass

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#include <stdio.h>
#include <algorithm>
#include <vector>
#include <queue>
using namespace std;
vector<pair<int, int> > G[100100];
int N,M,S,T,U,V;
vector<long long> dist(int s)
{
  vector<long long> ret(N,1e18);
  priority_queue<pair<long long, int> > Q;
  Q.push({0,s}); ret[s] = 0;
  while (!Q.empty()){
    long long c = -Q.top().first; int x = Q.top().second; Q.pop();
    if (ret[x] < c) continue;
    for (auto &e : G[x]){
      int y = e.first; long long nc = c + e.second;
      if (ret[y] > nc){
        Q.push({-nc,y}); ret[y] = nc;
      }
    }
  }
  return move(ret);
}
int main()
{
  scanf ("%d %d %d %d %d %d",&N,&M,&S,&T,&U,&V);
 
 
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Compilation message (stderr)

commuter_pass.cpp: In function 'int main()':
commuter_pass.cpp:30:47: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d %d %d %d %d %d",&N,&M,&S,&T,&U,&V);
                                               ^
commuter_pass.cpp:33:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int x,y,c; scanf ("%d %d %d",&x,&y,&c); x--; y--;
                                         ^

• Subtask 1: 16 / 16
• Subtask 2: 15 / 15
• Subtask 3: 24 / 24
• Subtask 4: 45 / 45