using namespace std;
bool cc(int a)
{
    int t = 0;
    int temp;
    int at = a;
    while (a != 0)
    {
        temp = a % 10;
        a /= 10;
        t *= 10;
        t += temp;
    }
    if (t == at)
    {
        return 1;
    }
    return 0;
}
bool bb(int n)
{
    if (n <= 1)
    {
        return false;
    }
    for (int i = 2; i < n; i++)
    {
        if ((n % i) == 0)
        {
            return false;
        }
    }
    return true;
}
    int main()
    {
        int b;
        int sum = 0;
        cin >> b;
        for (int i = 11; i <= b; i++)
        {
            if (cc(i) and bb(i))
            {
                sum++;
            }
        }
        cout << sum << endl;
        return 0;
    }   

#include using namespace std; bool cc(int a) { int t = 0; int temp; int at = a; while (a != 0) { temp = a % 10; a /= 10; t *= 10; t += temp; } if (t == at) { return 1; } return 0; } bool bb(int n) { if (n <= 1) { return false; } for (int i = 2; i < n; i++) { if ((n % i) == 0) { return false; } } return true; } int main() { int b; int sum = 0; cin >> b; for (int i = 11; i <= b; i++) { if (cc(i) and bb(i)) { sum++; } } cout << sum << endl; return 0; }

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
using namespace std;
int main(int argc, char** argv) {
long long x;
char a,b;
cin>>x;
cin>>a>>b;
if(a=='B' and b!='C'){
	cout<<x/10*8;
}else if(a!='C' and b=='B'){
	cout<<x/10*8;
}else if(a=='C' and b!='B'){
	cout<<x/10*7;
}else if(a!='B' and b=='C'){
	cout<<x/10*7;
}else if(a=='B' and b=='C'){
	cout<<x/10*6;
}else if(a=='C' and b=='B'){
	cout<<x/10*6;
}else{
	cout<<x;
}
	return 0;
}

**👍 **

行

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