knapsack.cpp: In function 'int main()':
knapsack.cpp:17:27: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
17 | while((subs.size()<=(cap/j))&&(i<arr[j].size())){
| ~~~~~~~~~~~^~~~~~~~~
knapsack.cpp:17:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
17 | while((subs.size()<=(cap/j))&&(i<arr[j].size())){
| ~^~~~~~~~~~~~~~
knapsack.cpp:18:28: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
18 | while((subs.size()<=(cap/j))&&(arr[j][i].second>0)){
| ~~~~~~~~~~~^~~~~~~~~
knapsack.cpp:28:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
28 | for(long long j=0;j<knapsack.size();j++){
| ~^~~~~~~~~~~~~~~~