/in/foo.cc: In function 'int main()':
/in/foo.cc:37:4: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    if(!b[x])ans++;b[x]++;
    ^~
/in/foo.cc:37:19: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
    if(!b[x])ans++;b[x]++;
                   ^