boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
21 | for (int i = 0; i < first.size(); i++)
| ~~^~~~~~~~~~~~~~
boxes.cpp:26:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | for (int i = 0; i < second.size(); i++)
| ~~^~~~~~~~~~~~~~~
boxes.cpp:37:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | if (K-i >= best2.size()) continue;
| ~~~~^~~~~~~~~~~~~~~
boxes.cpp:18:8: warning: unused variable 'm' [-Wunused-variable]
18 | ll m = 1e18;
| ^