#include <iostream>
#include <string>
using namespace std;

int main() {
    string originalString = "Sensitive information";
    string maskString = "******";
    int startPos = 10;
    int length = 6;
    
    originalString.replace(startPos, length, maskString);
    
    cout << originalString << endl; //결과: Sensitive ******ation
    return 0;
}