View Compilation Error

0_0_17844889_14979.cpp: In function 'int main()':
0_0_17844889_14979.cpp:18:9: error: 'lli' was not declared in this scope
         lli ans = n;
         ^
0_0_17844889_14979.cpp:21:13: error: 'ans' was not declared in this scope
             ans += e[i];
             ^
0_0_17844889_14979.cpp:23:27: error: 'ans' was not declared in this scope
         printf("%I64d\n", ans);
                           ^