foo.cc: In function 'int main()':
foo.cc:37:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |  cin>>n>>s1+1>>m>>s2+1;
      |          ~~^~
foo.cc:37:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |  cin>>n>>s1+1>>m>>s2+1;
      |                   ~~^~
foo.cc: In function 'int get(char)':
foo.cc:27:1: warning: control reaches end of non-void function [-Wreturn-type]
   27 | }
      | ^

Found 20 testcases.
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