标签：def http ble n+2 数字 ret long cpp define
#include <iostream>
#include<cstdio>
using namespace std;
#define ll long long
int main()
{
ll a,b,n;
cin>>a>>b>>n;
a%=b;
while(n-10>0){ //这里其实是下边的一个加速
a=a*1e10;
a%=b;
n-=10;
}
for(int i=0;i<n+2;i++){ //模拟除法，不断乘10，然后取余
a*=10;
if(i>=n-1)printf("%d",a/b);
a%=b;
}
return 0;
}
标签：def http ble n+2 数字 ret long cpp define
原文地址：https://www.cnblogs.com/52dxer/p/10539709.html
