Sir why is this code not working

#1

sir why is this code not working… please tell whats the error

#2

@Vaibhav277 range of a and b is 10^6 so make an array of 10^6+1

#3

not working…some error is coming… pls check my code and share the corrected one with me after making changes in my code

#4

all test cases not passing… pls tell whats the error

#5

Have you made the changes? Please send me your code

#6

sir my code is already in collaboration mode… only one test case is passing and two are still not working… i cant understand whats wrong in the code… thats why i asked u to make changes in my code and share it with me… this is what i am asking from ur side

#7

Please send me your current code. I cannot see any changes

#8

sir see i have made all the changes that i could understand… pls check that as i have already turned on collaboration mode… i cant understand what all i should do to make my code run 100%… so pls u send me the corrected code

#9

can u solve my doubt ???

#10

@Vaibhav277 here is the correct code
#include
using namespace std;
#define ll long long
void prime_sieve(int a[]){
for (int i=3;i<=1000000;i+=2){
a[i]=1;
}

for (ll i=3;i<=1000000;i+=2){
	if(a[i]==1){
		for(ll j=i*i;j<=1000000;j=j+i){
			a[j]=0;
		}
	}
}

a[0]=a[1]=0;
a[2]=1;

}

int main(){

int p[1000001]={0};
prime_sieve(p);

int csum[1000001]={0};

for(int i=0;i<=1000000;i++){
	csum[i]=csum[i-1]+ p[i];
}

int q;
cin>>q;
while(q--){
	int a,b;
	cin>>a>>b;
	cout<<csum[b]-csum[a-1]<<endl;
	
}

return 0;
}

#11

@Vaibhav277 i have submitted this code and it is passing all test cases

#12

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