题解 | #牛牛的等差数列#
知识点:运算
#include <iostream>
using namespace std;
int main() {
int a, b;
int c = 0;
cin >> a >> b;
c = b + (b - a);
cout << c << endl;
return 0;
}
知识点:运算
#include <iostream>
using namespace std;
int main() {
int a, b;
int c = 0;
cin >> a >> b;
c = b + (b - a);
cout << c << endl;
return 0;
}
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