countnum

From Nguyễn Hữu Trần Bảo, 1 Year ago, written in C++.

This paste is a reply to countnum from Nguyễn Hữu Trần Bảo - go back

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~~#include<bits/stdc++.h>~~
#include
using namespace std;
long long bc(long long a,long long b)
{
   return (a*b)/__gcd(a,b);
}

int main()
{
    ~~freopen("countnum.inp","r",stdin);\nfreopen("countnum.out","w",stdout);\n~~freopen("countnum.inp","r",stdin);
freopen("countnum.out","w",stdout);
    long long L,R,a,b;
    ~~cin>>L>>R>>a>>b;~~
cin>>L>>R>>a>>b;
    long long c=R-L+1;
    long long x=R/a-(L-1)/a;
    long long y=R/b-(L-1)/b;
    long long z=R/bc(a,b)-(L-1)/bc(a,b);
    ~~cout<<c-(x+y-z);~~
cout< }

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