제출 #1188312

#제출 시각아이디문제언어결과실행 시간메모리
1188312qs1Infinite Race (EGOI24_infiniterace2)C++17
100 / 100
65 ms1984 KiB
#include<bits/stdc++.h>
using namespace std;
#define lli long long int
 

 
 
int main(){
  lli x,y,a,l=0;
  cin>>x>>y;
  vector<lli>v(x,-1);
  while(y--){
    cin>>a;
    if(a<0){
      a=-a;
      v[a]=l-1;
    }
    else{
      if(v[a]==l){
        l++;
        v[a]=l;
      }
      else{
        v[a]=l;
      }
    }
  }
  cout<<l<<endl;
}
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