Compilare: main.cpp: In function 'int main()': main.cpp:122:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<e.size();) ~^~~~~~~~~ main.cpp:193:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0; k<stiva[st].size(); ++k) ~^~~~~~~~~~~~~~~~~ main.cpp:197:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=st+1; k<stiva.size(); ++k) ~^~~~~~~~~~~~~ main.cpp:201:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int kkk=0; kkk<aux.size(); ++kkk) ~~~^~~~~~~~~~~ main.cpp:206:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (stiva.size()>j) ~~~~~~~~~~~~^~ main.cpp:226:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<stiva[0].size(); ++i) ~^~~~~~~~~~~~~~~~ main.cpp:230:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<stiva.size(); ++i) ~^~~~~~~~~~~~~ main.cpp:234:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<aux.size(); ++j) ~^~~~~~~~~~~ main.cpp:242:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<ans.size(); ++i) ~^~~~~~~~~~~ main.cpp:250:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<ans.size(); ++i) ~^~~~~~~~~~~