Compilare: main.cpp: In function 'void MST::dfs(long long int, long long int, long long int)': main.cpp:85:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | while (i < t[nod << 1].size() && j < t[(nod << 1) + 1].size()) { | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:85:44: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | while (i < t[nod << 1].size() && j < t[(nod << 1) + 1].size()) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:91:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | while (i < t[nod << 1].size()) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:93:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 93 | while (j < t[(nod << 1) + 1].size()) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'long long int MST::small(long long int, long long int, long long int)': main.cpp:104:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 104 | if (a + pas < t[nod].size() && t[nod][a + pas] < val) | ~~~~~~~~^~~~~~~~~~~~~~~