0
1
mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-11-10 13:38:48 +00:00
OI-codes/Luogu/P4413/P4413.cpp

11 lines
144 B
C++
Raw Normal View History

2020-10-15 12:01:34 +00:00
#include <bits/stdc++.h>
using namespace std;
int main() {
int s, r1;
cin >> r1 >> s;
cout << s * 2 - r1 << endl;
return 0;
}