Compilare: main.cpp: In function 'std::vector<int> combine(const std::vector<int>&, const std::vector<int>&)': main.cpp:36:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<dp1.size(); i++) ~^~~~~~~~~~~ main.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<dp2.size(); j++) ~^~~~~~~~~~~ main.cpp: In function 'std::vector<int> calcArbore(int)': main.cpp:46:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[nod].size(); i++){ ~^~~~~~~~~~~~~~ main.cpp:50:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<dp.size(); i++) ~^~~~~~~~~~ main.cpp:51:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<dp1.size(); j++) ~^~~~~~~~~~~ main.cpp: In function 'std::vector<int> calcCiclu(const std::set<int>&)': main.cpp:64:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<g[*it].size(); j++) ~^~~~~~~~~~~~~~ main.cpp:70:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=l; i<dp.size()+l; i++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:87:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<cicluri.size(); i++) ~^~~~~~~~~~~~~~~ main.cpp:89:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<dp.size(); i++) ~^~~~~~~~~~ main.cpp:76:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("politic2.in", "r", stdin); ^ main.cpp:77:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("politic2.out", "w", stdout); ^ main.cpp:79:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:81:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &tata[i]); ^