/in/foo.cc: In function 'int main()':
/in/foo.cc:5:29: warning: variable 'r' set but not used [-Wunused-but-set-variable]
    5 |         long long a,b,q,w,e,r,t,y,leap=0;
      |                             ^
/in/foo.cc:5:31: warning: variable 't' set but not used [-Wunused-but-set-variable]
    5 |         long long a,b,q,w,e,r,t,y,leap=0;
      |                               ^
/in/foo.cc:5:33: warning: variable 'y' set but not used [-Wunused-but-set-variable]
    5 |         long long a,b,q,w,e,r,t,y,leap=0;
      |                                 ^