View Compilation Error

0_0_24824793_12003.cpp: In function 'long long int fx(int, int, int, int)':
0_0_24824793_12003.cpp:7:22: error: 'ss' was not declared in this scope
     int len = strlen(ss);
                      ^
0_0_24824793_12003.cpp: In function 'int main()':
0_0_24824793_12003.cpp:35:13: error: 'a' was not declared in this scope
             a[i] = s[i] - '0';
             ^
0_0_24824793_12003.cpp:37:18: error: 'a' was not declared in this scope
         LL ans = a[0] + getnum(1, len - 4) - a[len - 3] * a[len - 2] / a[len - 1];
                  ^
0_0_24824793_12003.cpp:37:42: error: 'getnum' was not declared in this scope
         LL ans = a[0] + getnum(1, len - 4) - a[len - 3] * a[len - 2] / a[len - 1];
                                          ^
0_0_24824793_12003.cpp:45:36: error: 'tcase' was not declared in this scope
         printf("Case #%d: %lld\n", tcase, ans);
                                    ^