shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:10:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
10 | for(int i = 0; i < s.size(); ++i){
| ~~^~~~~~~~~~
shoes.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
16 | for(int j = i+1; j < s.size(); ++j){
| ~~^~~~~~~~~~
shoes.cpp:39:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
39 | for(int j = i+1; j < s.size(); ++j){
| ~~^~~~~~~~~~