oj.uz

답안 #472521

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
472521 2021-09-13T16:55:38 Z ZaZo_ Toll (BOI17_toll) C++17
0 / 100
 48 ms 3732 KB 
#include <bits/stdc++.h>
#define ZAZO ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define int long long
using namespace std;
vector<pair<int,int>>edges[50001];
int k , n , m , o ;
int dist[50001],vis[50001]={0};
void prepare()
{
  for(int i = 0 ; i < n+1 ; i ++) dist[i]=INT_MAX;
}
void djk(int s , int e)
{
  priority_queue<pair<int,int>>pq;
  dist[s]=0;
  pq.push({0,s});
  while(!pq.empty())
  {
    int c = -pq.top().first , u = pq.top().second;
    vis[u]=1;
    pq.pop();
    for(int i = 0 ; i < edges[u].size() ; i++)
    {
      if(!vis[edges[u][i].first]&&dist[edges[u][i].first] > dist[u] + edges[u][i].second)
      {
        dist[edges[u][i].first] = dist[u] + edges[u][i].second;
        pq.push({-dist[edges[u][i].first],edges[u][i].first});
      }
    }
  }
}
int32_t main() {
  ZAZO
  cin >> k >> n >> m >> o ;
  int pref[50001];
  for(int i = 0 ; i <= 50001 ; i ++) pref[i]=-1e15;
  for(int i = 0 ; i < m ; i ++)
  {
    int a , b , t;
    cin >> a >> b >> t;
    pref[b]=t;
  }
  for(int i = 1  ; i <= 50001 ; i++)
  {
    pref[i]+=pref[i-1];
  }
  for(int i = 0 ; i < o ; i ++)
  {
    int a , b;
    cin>>a>>b;
    if(pref[b]-pref[a]<=0) cout<<"-1"<<endl;
    else cout<<pref[b]-pref[a]<<endl;
  }
}

Compilation message

toll.cpp: In function 'void djk(long long int, long long int)':
toll.cpp:22:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int i = 0 ; i < edges[u].size() ; i++)
      |                     ~~^~~~~~~~~~~~~~~~~
toll.cpp:19:9: warning: unused variable 'c' [-Wunused-variable]
   19 |     int c = -pq.top().first , u = pq.top().second;
      |         ^
toll.cpp: In function 'int32_t main()':
toll.cpp:36:45: warning: iteration 50001 invokes undefined behavior [-Waggressive-loop-optimizations]
   36 |   for(int i = 0 ; i <= 50001 ; i ++) pref[i]=-1e15;
      |                                      ~~~~~~~^~~~~~
toll.cpp:36:21: note: within this loop
   36 |   for(int i = 0 ; i <= 50001 ; i ++) pref[i]=-1e15;
      |                   ~~^~~~~~~~
toll.cpp:45:12: warning: iteration 50000 invokes undefined behavior [-Waggressive-loop-optimizations]
   45 |     pref[i]+=pref[i-1];
      |     ~~~~~~~^~~~~~~~~~~
toll.cpp:43:22: note: within this loop
   43 |   for(int i = 1  ; i <= 50001 ; i++)
      |                    ~~^~~~~~~~

Subtask #1
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 36 ms 3732 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 48 ms 3560 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 4 ms 3532 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 4 ms 3532 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 36 ms 3732 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -