#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll;
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define drep(i,n) for(ll i=n-1;i>=(ll)0;i--)

void solve() {
    ll a,b,c;
    cin>>a>>b>>c;
    cout<<((a+b==c) ? "Corenct" : "Incorrenct") <<endl;
}

int main() {
    solve();
    system("pause");
}