0_0_33648461_20224.cpp:10:1: error: 'll' does not name a type ll f[maxn]; ^ 0_0_33648461_20224.cpp: In function 'int main()': 0_0_33648461_20224.cpp:16:2: error: 'f' was not declared in this scope f[0]=1,f[1]=1; ^