View Compilation Error

0_0_39416135_337.cpp: In function 'int main()':
0_0_39416135_337.cpp:90:20: error: 'clear' was not declared in this scope
   90 |         FOR(i,1,n) clear(lay[i]);
      |                    ^~~~~
0_0_39416135_337.cpp:91:22: error: 'clear' was not declared in this scope
   91 |         FOR(i,1,n*2) clear(e[i]),clear(w[i]);
      |                      ^~~~~