Compilare: main.cpp: In function 'void up(int)': main.cpp:23:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | if(pos >= heap.size()) | ~~~~^~~~~~~~~~~~~~ main.cpp: In function 'void down(int)': main.cpp:33:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | while(2*pos < heap.size()) | ~~~~~~^~~~~~~~~~~~~ main.cpp:36:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | if(2*pos+1 < heap.size() && v[heap[2*pos]] > v[heap[2*pos+1]]) | ~~~~~~~~^~~~~~~~~~~~~ main.cpp: In function 'void pop(int)': main.cpp:72:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | if(nr >= heap.size()) | ~~~^~~~~~~~~~~~~~