Compilare: main.cpp: In function 'void find_sum_log(std::vector<int>&, int)': main.cpp:25:26: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] 25 | if ((n >> i) & 1 == 1) | ~~^~~~ main.cpp: In function 'void read(std::vector<std::vector<int> >)': main.cpp:32:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for (int i = 0; i < matrix.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:34:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for (int j = 0; j < matrix[i].size(); j++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void create_log_path(std::pair<int, int>, std::vector<std::vector<int> >&, int)': main.cpp:49:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for (int j = A.second; j < matrix[0].size(); j++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int solve(std::vector<std::vector<int> >&)': main.cpp:65:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(int i = 0; i < matrix.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:67:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for (int j = 0; j < matrix[0].size(); j++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:103:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 103 | for (int i = 0; i < matrix.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:115:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 115 | for (int i = log; i < matrix.size(); i++) | ~~^~~~~~~~~~~~~~~