foo.cc: In function 'int main()':
foo.cc:37:53: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
   37 |         if (((M == 9 || M == 11) && D == 30) || !(M + D & 1 )) printf("YES\n");
      |                                                   ~~^~~
foo.cc:32:12: warning: unused variable 'j' [-Wunused-variable]
   32 |     int i, j, l, x, y, z;
      |            ^
foo.cc:32:15: warning: unused variable 'l' [-Wunused-variable]
   32 |     int i, j, l, x, y, z;
      |               ^
foo.cc:32:18: warning: unused variable 'x' [-Wunused-variable]
   32 |     int i, j, l, x, y, z;
      |                  ^
foo.cc:32:21: warning: unused variable 'y' [-Wunused-variable]
   32 |     int i, j, l, x, y, z;
      |                     ^
foo.cc:32:24: warning: unused variable 'z' [-Wunused-variable]
   32 |     int i, j, l, x, y, z;
      |                        ^

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