Problem	contestcalc
User	nguyendinhanh1508
Submission Time	2024-01-29 09:14:52
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

contestcalc.cpp: In function ‘int32_t main()’:
contestcalc.cpp:20:13: error: no match for ‘operator+=’ (operand types are ‘long long int’ and ‘std::__cxx11::basic_string<char>’)
20 | sum += a[j].second;
| ~~~~^~~~~~~~~~~~~~