int read() { //输入挂 int x = 0, f = 1; register char ch = getchar(); while (ch<'0' || ch>'9') { if (ch == '-')f = -1; ch = getchar(); } while (ch >= '0'&&ch <= '9') { x = x * 10 + ch - '0'; ch = getchar(); } return x*f;}
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int read() { //输入挂 int x = 0, f = 1; register char ch = getchar(); while (ch<'0' || ch>'9') { if (ch == '-')f = -1; ch = getchar(); } while (ch >= '0'&&ch <= '9') { x = x * 10 + ch - '0'; ch = getchar(); } return x*f;}
转载于:https://www.cnblogs.com/ccut-ry/p/9389317.html