제출 #120237

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
120237	2019-06-24 04:09:55	nvmdava	Teleporters (IOI08_teleporters)	C++17	100 / 100	477 ms	29088 KiB

teleporters

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#include <bits/stdc++.h>
using namespace std;
#define N 2000001
int to[2000005];
bool in[2000005];
int cnt;
void go(int i){
  if(in[i] || i > N) return;
  in[i] = 1;
  i++;
  if(to[i]){
    i = to[i];
    cnt++;
  }
  go(i);
}
vector<int> v;
int main(){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n, m;
  cin>>n>>m;
  for(int i = 1; i <= n; i++){
    int w, e;
    cin>>w>>e;
    to[w] = e;    
    to[e] = w;
  }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

teleporters.cpp: In function 'int main()':
teleporters.cpp:41:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < v.size() && m--; i++){
                 ~~^~~~~~~~~~
teleporters.cpp:42:7: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized]
   res += v[i] + 2;
   ~~~~^~~~~~~~~~~

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