0_0_25963366_20013.cpp: In function 'int main()':
0_0_25963366_20013.cpp:88:24: error: 'len' was not declared in this scope
for (int i=0;i<len;i++)
^
0_0_25963366_20013.cpp:98:17: error: 'len' was not declared in this scope
EKMP(x,(len+1)/2,a1+(len+1)/2,(len)/2,nxt,extend);
^
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