নাম বলবো না-র ব্লগ

Prime Numbers UVA 406 : Prime Cuts #include<iostream> #include<cstdio> #include<vector> #include<math.h> using namespace std; int main() {     int n;int k=0,c;     vector<int>arra(100000,0),prime;     arra[0]=1;     arra[1]=0;     for(long long int i=2;i*i<=100000;i++)     {         if(arra[i]==0)             {                 for(long long int j=i+i;j<=100000;j+=i)                 {                     arra[j]=1;                 } ...