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#include <bits/stdc++.h>
using namespace std;
int main(){
    int s, x;
    cin >> x >> s;
    cout << 2*s-x;
}

Success #stdin #stdout 0.01s 5320KB

stdin

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Standard input is empty

stdout

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340841603

https://ideone.com/3R53rB

language:

C++14 (gcc 8.3)

created:

visibility:

public

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