题解 | #牛牛的等差数列#
牛牛的等差数列
http://www.nowcoder.com/practice/fb9daba67b88437a9e501adf020d425e
int main() { int a, b; scanf("%d%d", &a, &b); printf("%d", 2 * b - a); return 0; }
牛牛的等差数列
http://www.nowcoder.com/practice/fb9daba67b88437a9e501adf020d425e
int main() { int a, b; scanf("%d%d", &a, &b); printf("%d", 2 * b - a); return 0; }
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