Compilare: main.cpp: In function 'void solve()': main.cpp:41:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) { ~~^~~~~~~~~~~ main.cpp:55:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:60:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) { ~~^~~~~~~~~~~ main.cpp:74:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) { ~~^~~~~~~~~~~ main.cpp:83:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) ~~^~~~~~~~~~~ main.cpp:86:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) ~~^~~~~~~~~~~ main.cpp:93:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) { ~~^~~~~~~~~~~ main.cpp:102:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) ~~^~~~~~~~~~~ main.cpp:105:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) ~~^~~~~~~~~~~ main.cpp:109:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < v.size() - 1; h++) ~~^~~~~~~~~~~~~~ main.cpp:113:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~