제출 #915901

#제출 시각아이디문제언어결과실행 시간메모리
915901Dulguun88Baloni (COCI15_baloni)C++14
100 / 100
129 ms432 KiB
#include <iostream>
using namespace std;
const int N=1e6;
int v[N+5];
int main(){   
    int n; cin>>n;
    int nr=0;
    for(int i=1;i<=n;i++){
        int x;cin>>x;
        if(v[x+1]){
        	v[x+1]--;
		}
        else nr++;
        v[x]++;
    }
    cout<<nr;
    return 0;
}
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