Compilare: main.cpp: In function 'std::vector<int> calct(std::vector<std::vector<int> >&, int)': main.cpp:33:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i < dp.size(); i++) ~~^~~~~~~~~~~ main.cpp:34:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j < aux.size(); j++) ~~^~~~~~~~~~~~ main.cpp: In function 'std::vector<int> merg(std::vector<int>&, const std::vector<int>&)': main.cpp:41:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < dp1.size(); i++){ ~~^~~~~~~~~~~~ main.cpp:42:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < dp2.size(); j++) ~~^~~~~~~~~~~~ main.cpp: In function 'std::vector<int> calcc(std::vector<std::vector<int> >&, std::set<int>&)': main.cpp:56:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = n; i < cicdp.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:79:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 1; i < ans.size(); i++) ~~^~~~~~~~~~~~ main.cpp:71:33: 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:72:35: 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:74:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:77:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &aux[i]), aux[i]--; ^