[OpenJudge-NOI]連乘積末尾0的個數

代碼

#include <cstdio>
#include <iostream>
#include <cstring>
using namespace std;

int a,b;

int main() {
    cin>>a>>b;
    int i1(0),i2(0);
    for(int i=a;i<=b;i++) {
        int x;
        x=i;
        while(x%2==0&&x!=0){
            x/=2;
            i1++;
        }
        x=i;
        while(x%5==0&&x!=0){
            x/=5;
            i2++;
        }       
    }
    if(i1>i2) cout<<i2;
    else cout<<i1;  
}