Exceeding Time Limit - Working for Custom Inputs

#1

#include
using namespace std;
int main() {
int t;
cin>>t;
for(int k=0;k<t;k++){
long long a; // long a;
long long b; // long b;
cin>>a>>b;
int cnt;
int pv =0;
for(int i=a;i<=b;i++){
cnt=0;
for(int j=1;j<=i;j++){
if(i%j==0){
cnt++;
}
}
if(cnt==2){
pv++;
}

	}
	cout<<pv<<endl;
}



return 0;

}

// Exceeding time limit - error. Rest 2 cases are passed.

#2

@sahil112324 hey sahil sharma use sieve method which is discuss in number theory section.

#3

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