/in/foo.cc: In function 'int main()':
/in/foo.cc:8:34: warning: unused variable 'x' [-Wunused-variable]
   cin >> m; int m1 = m, sum = 0, x = 0, y = 0;
                                  ^
/in/foo.cc:8:41: warning: unused variable 'y' [-Wunused-variable]
   cin >> m; int m1 = m, sum = 0, x = 0, y = 0;
                                         ^