Compilare: main.cpp: In function 'int durata(int)': main.cpp:43:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<nod>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for (i = 0; i < l[vf].size(); i++) | ~~^~~~~~~~~~~~~~ main.cpp:39:13: warning: unused variable 't' [-Wunused-variable] 39 | int t = q.front().t; | ^ main.cpp: In function 'int main()': main.cpp:71:21: warning: unused variable 'j' [-Wunused-variable] 71 | {int m, t, x, y, i, j; | ^