View Compilation Error

0_0_38484473_16568.cpp: In function 'int main()':
0_0_38484473_16568.cpp:111:34: error: 'sqrtl' was not declared in this scope
         ll maxSum = 100*sqrtl(n+2), prv = -inf, decrCnt = 0, ans = 0;
                                  ^
0_0_38484473_16568.cpp:120:13: error: 'ans' was not declared in this scope
             ans = max(ans, got);
             ^
0_0_38484473_16568.cpp:123:20: error: 'ans' was not declared in this scope
         ll part1 = ans/10000;
                    ^