mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-12-12 02:26:26 +00:00
11 lines
144 B
C++
11 lines
144 B
C++
#include <bits/stdc++.h>
|
|
|
|
using namespace std;
|
|
|
|
int main() {
|
|
int s, r1;
|
|
cin >> r1 >> s;
|
|
cout << s * 2 - r1 << endl;
|
|
return 0;
|
|
}
|