View Compilation Error

0_0_30252153_27719.cpp: In function 'int main()':
0_0_30252153_27719.cpp:53:38: error: invalid operands of types 'void' and 'const ll {aka const long long int}' to binary 'operator%'
             write(sum[y-1]-sum[x-1])%mod;
                                      ^