Compilare: main.cpp: In function 'int main()': main.cpp:58:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(ind<=n && (n-ind+1) < (k-sol.size())){ ~~~~~~~~~~^~~~~~~~~~~~~~~~ main.cpp:69:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(sol.size()<k){ ~~~~~~~~~~^~ main.cpp:82:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol.size()>k)ind=1; ~~~~~~~~~~^~ main.cpp:83:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=ind;i<sol.size();i++) ~^~~~~~~~~~~