Compilare: main.cpp: In function 'void sol(long long int, long long int, bool, long long int)': main.cpp:19:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sf-inc+1==start.size()){ ~~~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'void pre_calc(char)': main.cpp:41:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<start.size();i++) ~^~~~~~~~~~~~~ main.cpp: In function 'long long int calc_complete(long long int, long long int, bool)': main.cpp:47:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sf-inc+1==start.size()) ~~~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'long long int calc_incomplete(long long int, long long int, bool, long long int)': main.cpp:63:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(q-inc<=start.size()){ ~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'int32_t main()': main.cpp:97:19: warning: unused variable 'part' [-Wunused-variable] long long part=q/start.size()+1-(q%start.size()==0); ^~~~