Compilare: main.cpp: In function 'void solve()': main.cpp:20:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<s.size();j++){ ~^~~~~~~~~ main.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<txt.size();j++){ ~^~~~~~~~~~~ main.cpp:35:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==s.size()-1){ ~~~^~~~~~~~~~~~ main.cpp:40:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<txt.size();i++){ ~^~~~~~~~~~~ main.cpp:42:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<len[i].size();j++){ ~^~~~~~~~~~~~~~