Eroare de compilare: user.cpp:9:19: error: expected initializer before ‘a’ unsigned long lon a[20][20]; ^ user.cpp: In function ‘void Read()’: user.cpp:21:9: error: ‘a’ was not declared in this scope a[x][y]=c; ^ user.cpp: In function ‘void solve(int)’: user.cpp:30:28: error: ‘a’ was not declared in this scope if(!car[j] and a[v[i-1]][j]) ^ user.cpp:43:12: error: ‘a’ was not declared in this scope if(a[v[n]][1]) ^