Compilare: user.cpp: In function ‘int main()’: user.cpp:56:86: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(son.x >= 1 && son.x <= n && son.y >=1 && son.y <= n && !seen[son.x][son.y]) ^ user.cpp:56:93: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(son.x >= 1 && son.x <= n && son.y >=1 && son.y <= n && !seen[son.x][son.y]) ^ user.cpp:58:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] seen[son.x][son.y] = 1; ^ user.cpp:58:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] seen[son.x][son.y] = 1; ^ user.cpp:59:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dist + value[son.x][son.y] <= S) ^ user.cpp:59:49: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dist + value[son.x][son.y] <= S) ^ user.cpp:60:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] Q[dist + value[son.x][son.y]].push_back({son.x, son.y}); ^ user.cpp:60:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] Q[dist + value[son.x][son.y]].push_back({son.x, son.y}); ^ user.cpp:24:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taxe2.in", "r", stdin); ^ user.cpp:25:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("taxe2.out", "w", stdout); ^ user.cpp:29:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &S, &n); ^ user.cpp:33:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &value[i][j]); ^