/in/foo.cc: In function 'int main()':
/in/foo.cc:21:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if (x1 < 0) x1 = 0; if (y1 < 0) y1 = 0;
     ^~
/in/foo.cc:21:25: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
     if (x1 < 0) x1 = 0; if (y1 < 0) y1 = 0;
                         ^~
/in/foo.cc:22:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if (x2 > n * 2) x2 = n * 2; if (y2 > n * 2) y2 = n * 2; 
     ^~
/in/foo.cc:22:33: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
     if (x2 > n * 2) x2 = n * 2; if (y2 > n * 2) y2 = n * 2; 
                                 ^~
/in/foo.cc:16:12: warning: unused variable 'X' [-Wunused-variable]
   for (int X, Y, x1, y1, x2, y2, i = 1; i <= n; i++) {
            ^
/in/foo.cc:16:15: warning: unused variable 'Y' [-Wunused-variable]
   for (int X, Y, x1, y1, x2, y2, i = 1; i <= n; i++) {
               ^
/in/foo.cc:16:18: warning: unused variable 'x1' [-Wunused-variable]
   for (int X, Y, x1, y1, x2, y2, i = 1; i <= n; i++) {
                  ^~
/in/foo.cc:16:22: warning: unused variable 'y1' [-Wunused-variable]
   for (int X, Y, x1, y1, x2, y2, i = 1; i <= n; i++) {
                      ^~
/in/foo.cc:16:26: warning: unused variable 'x2' [-Wunused-variable]
   for (int X, Y, x1, y1, x2, y2, i = 1; i <= n; i++) {
                          ^~
/in/foo.cc:16:30: warning: unused variable 'y2' [-Wunused-variable]
   for (int X, Y, x1, y1, x2, y2, i = 1; i <= n; i++) {
                              ^~