View Compilation Error

0_0_33143340_32218.cpp: In function 'int SPFA(int)':
0_0_33143340_32218.cpp:21:26: error: 'N' was not declared in this scope
     for(int i = 1 ; i <= N ; i++ )
                          ^
0_0_33143340_32218.cpp: In function 'int main()':
0_0_33143340_32218.cpp:91:9: error: expected ';' before 'printf'
         printf("Case #%d: %d\n",++cas,s);
         ^