C++ :

#include <iostream>
using namespace std;
int main() {
    char str[101];
    cin >> str;
    bool allPrintable = true;
    for (int i = 0; str[i] != '\0'; ++i) {
        if (str[i] < 32 || str[i] > 126) {
            allPrintable = false;
            break;
        }
    }
    cout << (allPrintable ? "YES" : "NO") << endl;
    return 0;
}