23 lines
226 B
C++
23 lines
226 B
C++
#include<iostream>
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using namespace std;
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int main(){
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int n;
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cin >> n;
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int a=0,b=1;
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if((n == 1)||(n == 0)){
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cout << n;
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return 0;
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}
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for(int i = 1;i<n;i++){
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a = a + b;
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swap(a,b);
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}
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cout << b;
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return 0;
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}
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