Compilare: main.cpp: In member function 'void Numar::aduna(Numar)': main.cpp:27:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = len; i < nr.size(); ++i){ ~~^~~~~~~~~~~ main.cpp:32:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = len; i < b.nr.size(); ++i){ ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:73:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < dp[!l][1].nr.size(); ++i) ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:57:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("indep.in","r",stdin); ^ main.cpp:58:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("indep.out","w",stdout); ^ main.cpp:60:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n,&m); ^ main.cpp:63:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^