Compilare: main.cpp: In function 'void solve_lin(int)': main.cpp:75:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for (int i = 0; i < vp.size() + ql[lin].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:77:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | if (i1 == vp.size()) | ~~~^~~~~~~~~~~~ main.cpp:79:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<query_lin>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | else if (i2 == ql[lin].size()) | ~~~^~~~~~~~~~~~~~~~~ main.cpp:90:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for (int i = 0; i < vls.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:94:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<query_lin>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 94 | for (int i = 0; i < ql[lin].size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp:96:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | while (i1 < vp.size() and mp[vp[i1].first] <= mp[ql[lin][i].v]) | ~~~^~~~~~~~~~~ main.cpp: In function 'void solve_all()': main.cpp:123:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<query_lin>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 123 | for (int j = 0; j < ql[i].size(); j++) | ~~^~~~~~~~~~~~~~