0_0_33089283_18590.cpp: In function 'int query(int, int, int)':
0_0_33089283_18590.cpp:151:44: error: 'qu' was not declared in this scope
return max(ans, max(query(lson, l, r), qu
^
0_0_33089283_18590.cpp:151:44: error: expected ';' at end of input
0_0_33089283_18590.cpp:151:44: error: expected '}' at end of input
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