View Compilation Error

0_0_38332447_3159.cpp:3:9: error: 'll' does not name a type
 typedef ll ll;
         ^
0_0_38332447_3159.cpp: In function 'int main()':
0_0_38332447_3159.cpp:18:13: error: 'll' was not declared in this scope
             ll ans = 0;
             ^
0_0_38332447_3159.cpp:34:21: error: 'ans' was not declared in this scope
                     ans += len - r + 1;
                     ^
0_0_38332447_3159.cpp:43:28: error: 'ans' was not declared in this scope
             printf("%d\n", ans);
                            ^