View Compilation Error

0_0_25191542_17546.cpp: In function 'int main()':
0_0_25191542_17546.cpp:51:3: error: 'll' was not declared in this scope
   ll ans = 0;
   ^
0_0_25191542_17546.cpp:61:4: error: 'ans' was not declared in this scope
    ans += c.val;
    ^
0_0_25191542_17546.cpp:67:20: error: 'ans' was not declared in this scope
   printf("%lld\n", ans);
                    ^