foo.cc: In function 'void dfs(int, LL)':
foo.cc:19:45: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
 else for(int i=1;i<=26;i++) dfs(dep+1,(s<<5)+s^i);
                                       ~~~~~~^~
foo.cc: In function 'int main()':
foo.cc:29:36: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
 cin >> n >> k >> m;inv=pow(33,(1<<m-1)-1,(1<<m)-1);
                                   ~^~
foo.cc:30:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
 m=(1<<m)-1;maxd=n+1>>1;mind=n>>1;dfs(0,0);dfs2(0,k);
                 ~^~

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