1176 The Closest Fibonacci Number#include<iostream> #include<cmath> using namespace std; int main(){ int n,fn,fn_1=1,fn_2=1; cin>>n; for(int i=2;;i++){ fn=fn_1+fn_2; if(abs(fn-n)>=abs(fn_1-n)){ cout<<fn_1<<endl; return 0; } fn_2=fn_1; fn_1=fn; } return 0; }