Compilare: main.cpp: In function 'void read()': main.cpp:40:26: warning: array subscript has type 'char' [-Wchar-subscripts] graph[chartoint[x]].push_back(chartoint[y]); ^ main.cpp:40:50: warning: array subscript has type 'char' [-Wchar-subscripts] graph[chartoint[x]].push_back(chartoint[y]); ^ main.cpp:41:27: warning: array subscript has type 'char' [-Wchar-subscripts] bgraph[chartoint[y]].push_back(chartoint[x]); ^ main.cpp:41:51: warning: array subscript has type 'char' [-Wchar-subscripts] bgraph[chartoint[y]].push_back(chartoint[x]); ^ main.cpp:42:25: warning: array subscript has type 'char' [-Wchar-subscripts] ++in[chartoint[y]]; ^ main.cpp:43:26: warning: array subscript has type 'char' [-Wchar-subscripts] ++out[chartoint[x]]; ^ main.cpp:44:17: warning: array subscript has type 'char' [-Wchar-subscripts] exists[x]=exists[y]=true; ^ main.cpp:44:27: warning: array subscript has type 'char' [-Wchar-subscripts] exists[x]=exists[y]=true; ^ main.cpp:25:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("path.in", "r", stdin); ^ main.cpp:26:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld", &n, &m, &k); ^ main.cpp:39:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c%c%c", &x, &e, &y); fgetc(stdin); ^ main.cpp: In function 'void write()': main.cpp:65:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("path.out", "w", stdout); ^