View Compilation Error

0_0_29189871_27984.cpp: In function 'int main()':
0_0_29189871_27984.cpp:21:24: error: expected '}' at end of input
                 sum = m;//更新区间%0
                        ^
0_0_29189871_27984.cpp:21:24: error: expected '}' at end of input
0_0_29189871_27984.cpp:21:24: error: expected '}' at end of input
0_0_29189871_27984.cpp:21:24: error: expected '}' at end of input