Compilare: main.cpp: In function 'void buildtrie()': main.cpp:42:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<t[i].size();j++){ ~^~~~~~~~~~~~ main.cpp:54:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==(t[i].size()-1)) vecc[curr].cont.push_back(i); ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void bfs()': main.cpp:74:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<vecc[vecc[y].a[v]].cont.size();i++){ ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:83:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<vecc[x].arr.size();i++){ ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void calc()': main.cpp:96:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();i++){ ~^~~~~~~~~ main.cpp:99:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<vecc[indx].cont.size();j++){ ~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:109:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<vecc[indx].cont.size();j++){ ~^~~~~~~~~~~~~~~~~~~~~~~