Compilare: main.cpp: In function 'int main()': main.cpp:88:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index2 = 0; index2 < tree[savp].chd.size(); index2++) { ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:91:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index3 = 0; index3 < tree[tree[savp].chd[index2]].chd.size(); index3++) { ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:93:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index3 != tree[tree[savp].chd[index2]].chd.size() - 1) { ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:123:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index3 = 0; index3 < tree[paths[index2].high].terr.size(); index3++) { ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:131:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index3 = 0; index3 < tree[savp].chd.size(); index3++) { ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:133:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index4 = 0; index4 < tree[tree[savp].chd[index3]].terr.size(); index4++) { ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~