Submission #5904147

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(n);i++)

int main(){
	int n;cin>>n;
	vector<int>a(n);
	for(auto&& u:a)cin>>u;
	for(int i=3;i<n;i+=2){
		int j=i-1;
		while(j>=0&&a[j]!=a[i])j--;
		if(j<i-1){
		for(int k=j+1;k<i;k++)a[k]=a[i];
		}
	}
	int ret=0;
	for(auto&& u:a)if(u==0)ret++;
	cout<<ret<<endl;
}

Submission Info

Judge Result