Compilare: main.cpp: In function 'void afis()': main.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < v1.size() - 1; i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void bkt(int)': main.cpp:36:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if((k == 1 && mat[start][v[k]] == 1) || (k == (v1.size() - 2) && mat[v[k - 1]][v[k]] == 1 && mat[v[k]][stop] == 1) || (k < (v1.size() - 2) && mat[v[k - 1]][v[k]] == 1)){ ~~^~~~~~~~~~~~~~~~~~ main.cpp:36:130: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if((k == 1 && mat[start][v[k]] == 1) || (k == (v1.size() - 2) && mat[v[k - 1]][v[k]] == 1 && mat[v[k]][stop] == 1) || (k < (v1.size() - 2) && mat[v[k - 1]][v[k]] == 1)){ ~~^~~~~~~~~~~~~~~~~ main.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k == (v1.size() - 2)) ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:63:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v1.size(); i++) ~~^~~~~~~~~~~ main.cpp:67:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v2.size(); i++) ~~^~~~~~~~~~~