Submission #1946725

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Source Code Expand

#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define all(a) (a).begin(),(a).end()
#define pb emplace_back
#define INF (1e9+1)

int main(){
    int n;
    cin>>n;
    set<int> st;
    rep(i,n){
        int a;
        cin>>a;
        st.insert(a);
    }
    cout<<st.size()<<endl;
}

Submission Info

Judge Result