Compilare: main.cpp: In function 'std::vector<node*> mergeHeaps(std::vector<node*>&, std::vector<node*>&)': main.cpp:34:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (pos1 < h1.size() or pos2 < h2.size()) { ~~~~~^~~~~~~~~~~ main.cpp:34:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (pos1 < h1.size() or pos2 < h2.size()) { ~~~~~^~~~~~~~~~~ main.cpp:35:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pos1 == h1.size()) { ~~~~~^~~~~~~~~~~~ main.cpp:39:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if (pos2 == h2.size()) { ~~~~~^~~~~~~~~~~~ main.cpp:56:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < newH.size(); ++i) ~~^~~~~~~~~~~~~ main.cpp: In function 'node* getMin(std::vector<node*>&)': main.cpp:78:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < h.size(); ++i) ~~^~~~~~~~~~ main.cpp: In function 'void deleteMin(std::vector<node*>&)': main.cpp:104:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < h.size(); ++i) ~~^~~~~~~~~~ main.cpp: In function 'void removeNodeFromHeap(std::vector<node*>&, node*)': main.cpp:120:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < h.size(); ++i) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:150:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("heapuri.in","r",stdin); ^ main.cpp:151:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("heapuri.out","w",stdout); ^ main.cpp:153:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:157:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&cod); ^ main.cpp:159:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ main.cpp:164:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^