Compilare: main.cpp: In function 'void solve(int)': main.cpp:47:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~ main.cpp:52:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) { ~~^~~~~~~~~~~ main.cpp:66:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) { ~~^~~~~~~~~~~ main.cpp:75:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < id.size(); h++) ~~^~~~~~~~~~~ main.cpp:78:24: 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 < v.size(); h++) { ~~^~~~~~~~~~ main.cpp:97:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < v.size() - 1; h++) ~~^~~~~~~~~~~~~~ main.cpp:101:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i++) ~~^~~~~~~~~~