View Compilation Error

0_0_23972014_10074.cpp:16:1: error: 'LL' does not name a type
 LL d[N];
 ^
0_0_23972014_10074.cpp: In function 'void spfa(int)':
0_0_23972014_10074.cpp:22:33: error: 'd' was not declared in this scope
     for(int i = 1; i <= n; i ++)d[i] = inf;
                                 ^
0_0_23972014_10074.cpp:24:5: error: 'd' was not declared in this scope
     d[s] = 0;
     ^
0_0_23972014_10074.cpp: In function 'int main()':
0_0_23972014_10074.cpp:51:26: error: 'd' was not declared in this scope
         printf("%lld\n", d[n]);
                          ^