View Compilation Error

0_0_39109628_1582.cpp: In function 'int main()':
0_0_39109628_1582.cpp:21:19: error: 'accumulate' was not declared in this scope
   21 |         ll sumC = accumulate(C.begin(), C.end(), 0); // 所有小部件价格的总和
      |                   ^~~~~~~~~~