/in/foo.cc: In function 'int main()':
/in/foo.cc:59:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(re int i=1;i<=n;++i)
     ^~~
/in/foo.cc:66:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
         int flag=0;
         ^~~