zoj 1889 Ones
2014-09-01 20:26
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//模拟除法运算的过程
#include<stdio.h>
int main() { int i,n; long num; while(scanf("%d",&n) != EOF){ i = 1; num = 1; while(num % n != 0){ i++; num = (num % n)*10 + 1; } printf("%d\n",i); } return 0; }