foo.cc: In function 'int check(int)':
foo.cc:51:13: warning: unused variable 'j' [-Wunused-variable]
   51 |         int j=0; int cnt=0; int ans=0;
      |             ^
foo.cc:51:22: warning: unused variable 'cnt' [-Wunused-variable]
   51 |         int j=0; int cnt=0; int ans=0;
      |                      ^~~
foo.cc: In function 'll solve(int)':
foo.cc:75:13: warning: unused variable 'j' [-Wunused-variable]
   75 |         int j=0; int cnt=0; ll ans=0;
      |             ^
foo.cc:75:22: warning: unused variable 'cnt' [-Wunused-variable]
   75 |         int j=0; int cnt=0; ll ans=0;
      |                      ^~~

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