Compilare: main.cpp: In function 'int main()': main.cpp:61:31: 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 = 0; i < q[ 0 ].size(); i++ ) { | ~~^~~~~~~~~~~~~~~ main.cpp:68:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for( int p = 1; p < q.size(); p++ ) { | ~~^~~~~~~~~~ main.cpp:83:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for( int i = 0; i < lin.size(); i++ ) { | ~~^~~~~~~~~~~~ main.cpp:91:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for( int i = 0; i < lin.size(); i++ ) | ~~^~~~~~~~~~~~ main.cpp:92:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for( int j = 0; j < lin[ i ].size(); j++ ) | ~~^~~~~~~~~~~~~~~~~