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longyue0521/fast_read_int.c

Last active May 16, 2018 10:50
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Fast Read int From Stdin In C
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fast_read_int.c
int read_int() {
char c = getchar_unlocked();
while(c<'0' || c>'9') c = getchar_unlocked();
int ret = 0;
while(c>='0' && c<='9') {
ret = 10 * ret + c - 48;
c = getchar_unlocked();
}
return ret;
}
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