快读快写
防一波新生赛的大数据
转别人的板子,用字符getchar读入比scanf快。
快读:
inline int read() {
char ch = getchar();
int x = 0, f = 1;
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;
}
快写:
inline void write(int x) {
if(x < 0) putchar('-'), x = -x;
if(x > 9) write(x / 10);
putchar(x % 10 + '0');
}