Submission #3431013

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

int main(){

	int N;
	cin >> N;
	set<int> a;
	int count=0;
		
	for(int i=0;i<N;i++){
		int x;
		cin >> x;			
		if(a.insert(x).second){count++;};	
	}

	cout << count<<endl;


	return 0;

}

Submission Info

Judge Result