paint.cpp: In function 'int minimumInstructions(int, int, int, std::vector<int>, std::vector<int>, std::vector<std::vector<int> >)':
paint.cpp:30:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
30 | for(ll i = 0; i < ve.size(); i++)
| ~~^~~~~~~~~~~
paint.cpp:32:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
32 | for(ll j = 0; j < ve[i].size(); j++)
| ~~^~~~~~~~~~~~~~
paint.cpp:38:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
38 | for(ll i = 0; i < c.size(); i++)
| ~~^~~~~~~~~~
paint.cpp:40:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | for(ll j = 0; j < ve2[c[i]].size(); j++)
| ~~^~~~~~~~~~~~~~~~~~
paint.cpp:60:12: warning: unused variable 't1' [-Wunused-variable]
60 | ll t1 = pq.top().S;
| ^~