Compilare: main.cpp: In function 'int main()': main.cpp:58:40: warning: array subscript has type 'char' [-Wchar-subscripts] 58 | v[e[i].to][inds[e[i].to]][0] = e[i].from, | ~~~~~~~~~~~~^ main.cpp:59:41: warning: array subscript has type 'char' [-Wchar-subscripts] 59 | v[e[i].to][inds[e[i].to]++][1] = e[i].cst, | ~~~~~~~~~~~~~^~ main.cpp:60:44: warning: array subscript has type 'char' [-Wchar-subscripts] 60 | v[e[i].from][inds[e[i].from]][0] = e[i].to, | ~~~~~~~~~~~~~~^ main.cpp:61:45: warning: array subscript has type 'char' [-Wchar-subscripts] 61 | v[e[i].from][inds[e[i].from]++][1] = e[i].cst; | ~~~~~~~~~~~~~~~^~