Compilare: main.cpp: In function 'void solve()': main.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<txt.size();++i) ~^~~~~~~~~~~ main.cpp:25:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=2;j<s.size()-1;++j) ~^~~~~~~~~~~ main.cpp:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<txt.size();++j) ~^~~~~~~~~~~ main.cpp:40:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==s.size()-2) ~~~^~~~~~~~~~~~ main.cpp:44:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<txt.size();++i) ~^~~~~~~~~~~ main.cpp:47:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<len[i].size();++j) ~^~~~~~~~~~~~~~