제출 #1128555

#제출 시각아이디문제언어결과실행 시간메모리
1128555Ak_16Infinite Race (EGOI24_infiniterace2)C++17
29 / 100
42 ms2632 KiB
#include <iostream> using namespace std; int main() { int n,q; int a[300000]; int cnt=0; cin>>n; cin>>q; int f[300000] = {0}; for(int i=1; i<=q; i++){cin>>a[i];} for(int i=1; i<=q; i++){ if(a[i]>0){ if(f[a[i]]==1){cnt++;} f[a[i]] = 1; } else {f[-a[i]] = 0;} } cout<<cnt; }
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