Compilare: main.cpp: In function 'int lcp(int, int)': main.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cur==s[i].size() or cur==s[j].size()) ~~~^~~~~~~~~~~~~ main.cpp:16:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cur==s[i].size() or cur==s[j].size()) ~~~^~~~~~~~~~~~~