View Compilation Error

0_0_38624891_25683.cpp: In function 'bool check()':
0_0_38624891_25683.cpp:30:13: error: 'pow' was not declared in this scope
  if(n==b[0]-pow(b[1],2)+pow(b[2],3)-pow(b[3],4)+pow(b[4],5)){
             ^~~
0_0_38624891_25683.cpp:30:13: note: suggested alternative: 'putw'
  if(n==b[0]-pow(b[1],2)+pow(b[2],3)-pow(b[3],4)+pow(b[4],5)){
             ^~~
             putw