tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:9:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | for(int i = 0;i < x.size();i++){
| ~~^~~~~~~~~~
tickets.cpp:13:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
13 | for(int j = 0;j < x[i].size();j++){
| ~~^~~~~~~~~~~~~
tickets.cpp:17:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
17 | for(int j = 0;j < newv.size();j++){
| ~~^~~~~~~~~~~~~
tickets.cpp:24:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
24 | for(int i = 0;i < s.size();i++) s[i].resize(x[0].size(), -1);
| ~~^~~~~~~~~~
tickets.cpp:28:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
28 | for(int i = 0;i < x.size()/2;i++){
| ~~^~~~~~~~~~~~
tickets.cpp:35:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
35 | for(int i = x.size()/2;i < x.size();i++){
| ~~^~~~~~~~~~