摘要：
int read() { char ch = getchar(); int x = 0, f = 1; while(ch < '0' || ch > '9') { if(ch == '-') f = -1; ch = getchar(); } while('0' <= ch && ch <= '9') { x = x * 10 + ch - '0'; ch = getchar(); } retur 阅读全文
posted @ 2019-08-17 15:32
Mogeko
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