#include<bits/stdc++.h>
#include
using namespace std;
long long gcd(long long int a, long long int b)
{
if (b == 0)
return a;
return gcd(b, a % b);
}
long long lcm(int a, int b)
{
return (a / gcd(a, b)) * b;
}
void solve()
{
long long a,b,c,d;
cin>>a>>b>>c>>d;
cin>>a>>b>>c>>d;
long long p,x,y,z,t=0;
p=b-a+1;
x=b/c-(a-1)/c;
y=b/d-(a-1)/d;
z=b/lcm(c,d)-(a-1)/lcm(c,d);
t=x+y-z;
cout<<p-t;
cout<
}
int main()
{
freopen("countnum.inp","r",stdin);
freopen("countnum.out","w",stdout);
freopen("countnum.inp","r",stdin);
freopen("countnum.out","w",stdout);
solve();
}
Replies to coutnum 
| Title |
Name |
Language |
UNIX |
When |
| beaunum |
trần bá nguyên |
text |
1711010005 |
2 Months ago. |
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