#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
for (int i = 1; i <= 5; i++)
{
for (int j = 1; j <= 5; j++)
cout << setw(4) << i * j;
cout << endl;
}
return 0;
}
/*
run:
1 2 3 4 5
2 4 6 8 10
3 6 9 12 15
4 8 12 16 20
5 10 15 20 25
*/