Compilare: main.cpp: In function 'void dft(int, int, int)': main.cpp:44:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'void fft(int, int)': main.cpp:61:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[R].size();i++) ~^~~~~~~~~~~~ main.cpp:64:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[x].size();j++) ~^~~~~~~~~~~~ main.cpp:84:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int it=0;it<ad[R].size();it++) ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:199:26: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=] printf("%d\n",rez); ^ main.cpp:149:9: warning: variable 'afis' set but not used [-Wunused-but-set-variable] int afis; ^~~~ main.cpp:105:45: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("palatulvoltaic.out","w",stdout); ^