Compilare: main.cpp: In function 'int bfs()': main.cpp:23:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i<v[na].size(); i++) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:88:29: warning: array subscript has type 'char' [-Wchar-subscripts] much[i] = {x, y, cost[c[0]] + cost[c[1]]*5 + cost[c[2]]*25 + cost[c[3]]*125, 0}; ^ main.cpp:88:42: warning: array subscript has type 'char' [-Wchar-subscripts] much[i] = {x, y, cost[c[0]] + cost[c[1]]*5 + cost[c[2]]*25 + cost[c[3]]*125, 0}; ^ main.cpp:88:57: warning: array subscript has type 'char' [-Wchar-subscripts] much[i] = {x, y, cost[c[0]] + cost[c[1]]*5 + cost[c[2]]*25 + cost[c[3]]*125, 0}; ^ main.cpp:88:73: warning: array subscript has type 'char' [-Wchar-subscripts] much[i] = {x, y, cost[c[0]] + cost[c[1]]*5 + cost[c[2]]*25 + cost[c[3]]*125, 0}; ^