Bài 1:
C++:

#include <bits/stdc++.h>
using namespace std;

int main() {

     long long mon1, mon2, mon3;
     cin >> mon1 >> mon2 >> mon3;
     cout << mon1 + mon2 + mon3;

     return 0;
}
Python:
mon1, mon2, mon3 = map(int, input().split())
print(mon1 + mon2 + mon3)

Bài 2:
C++:
#include <bits/stdc++.h>
using namespace std;

int main() {   
long long x, y, z, t, n, m;   
cin >> x >> y >> z >> t >> n >> m;   
cout << x * t + y * n + z * m;

return 0;
}
Python:
x, y, z, t, n, m = map(int, input().split())
print(x * t + y * n + z * m)