#include <iostream>
int main() {
for (int x = 0; x <= 100; ++x) {
for (int y = 0; y <= 100; ++y) {
for (int z = 0; z <= 100; ++z) {
 if (x + y + z == 100 && 5*x + 3*y + z/5.0 == 100) {
 std::cout <<"Trau dung= "<<x<<",Trau nam="<<y<<",Trau nghe ="<<z<<std::endl;
}
}
}
}
return 0;
}

$#doanthevu$

Code C++:

#include <bits/stdc++.h>
using namespace std;
int main() {
    int tc = 100;
    int hh = 5 * (tc / 10);
    int gg = 3 * (tc / 10);
    int qq = (tc / 10);
    cout << "Trau dung: " << hh <<endl;
    cout << "Trau nam:  " << gg <<endl;
    cout << "Trau nghe: " << qq <<endl;
    return 0;
}