0_0_25725153_9695.cpp: In function 'void pushup(int)': 0_0_25725153_9695.cpp:31:35: error: expected unqualified-id at end of input }a[rt].sum=a[lson].sum+a[rson]. ^ 0_0_25725153_9695.cpp:31:35: error: expected '}' at end of input