Compilare: main.cpp: In function 'int main()': main.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v0[rest].size(); ++i){ ~~^~~~~~~~~~~~~~~~~ main.cpp:44:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == v0[rest].size()) ~~^~~~~~~~~~~~~~~~~~ main.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v0[rest].size(); ++i){ ~~^~~~~~~~~~~~~~~~~ main.cpp:69:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v0[rest].size(); ++i){ ~~^~~~~~~~~~~~~~~~~ main.cpp:71:20: warning: 'nrgas' may be used uninitialized in this function [-Wmaybe-uninitialized] ++nrgas; ^