Compilare: main.cpp: In function 'void solve()': main.cpp:16:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<txt.size();i++) ~^~~~~~~~~~~ main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=2;j<s.size()-1;j++){ ~^~~~~~~~~~~ main.cpp:32:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<txt.size();j++){ ~^~~~~~~~~~~ main.cpp:38:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==s.size()-2){ ~~~^~~~~~~~~~~~ main.cpp:43:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<txt.size();i++){ ~^~~~~~~~~~~ main.cpp:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<len[i].size();j++){ ~^~~~~~~~~~~~~~