View Compilation Error

0_0_22174468_11183.cpp: In function 'long long int query(int, int, int, int, int)':
0_0_22174468_11183.cpp:39:3: error: 're' was not declared in this scope
   re
   ^
0_0_22174468_11183.cpp:39:3: error: expected '}' at end of input