Submission #1500141

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<string>
#include<algorithm>
#define REP(i,n) for(int i=0;i<(n);i++)
using namespace std;
int main(){
	long long int n,a[10000000],ans=0;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>a[i];
	}
	for(int i=0;i<n;i++){
		if(i+1==a[i+1]){
			ans++;
		}
	}
	cout<<ans<<std::endl;
	return 0;
}

Submission Info

Judge Result