stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:32:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
32 | for(int i = 0; i < u.size(); i++){
| ~~^~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:52:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | if(lessThan == c.size()){
| ~~~~~~~~~^~~~~~~~~~~
stations.cpp:61:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
61 | for(int i =1; i < c.size(); i++){
| ~~^~~~~~~~~~
stations.cpp:62:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
62 | int out = (i == c.size()-1 ? s-1:c[i+1]-1);
| ~~^~~~~~~~~~~~~
stations.cpp:82:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
82 | for(int i = 0; i < c.size(); i++){
| ~~^~~~~~~~~~
stations.cpp:90:22: 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 = 1; i < c.size(); i++){
| ~~^~~~~~~~~~
stations.cpp:101:1: warning: control reaches end of non-void function [-Wreturn-type]
101 | }
| ^