Compilare: main.cpp: In function 'll marime(int, int)': main.cpp:59:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | if (i == rows.size()) x2 = N + 1; | ~~^~~~~~~~~~~~~~ main.cpp:62:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | if (j == cols.size()) y2 = M + 1; | ~~^~~~~~~~~~~~~~ main.cpp: In function 'void Solution()': main.cpp:89:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for (int i = 1 ; i <= rows.size() ; ++ i) | ~~^~~~~~~~~~~~~~ main.cpp:91:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for (int j = 1 ; j <= cols.size() ; ++ j) | ~~^~~~~~~~~~~~~~ main.cpp:98:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 98 | for (int i = 1 ; i <= rows.size() ; ++ i) | ~~^~~~~~~~~~~~~~ main.cpp:100:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 100 | for (int j = 1 ; j <= cols.size() ; ++ j) | ~~^~~~~~~~~~~~~~ main.cpp:75:25: warning: unused variable 'x' [-Wunused-variable] 75 | int i1, j1, i2, j2, x; | ^