#include<iostream>
using namespace std;
int main(){
int a=0,b=1,t,n=1;
for(n=2;n<=200;n++){
a=a+b;
b=a+b;
}
cout<<b;
}[mw_shl_code=cpp,true]#include<iostream>
c++:
英文书写 缩进键 符号成对 空格保存
[mw_shl_code=cpp,true]swap(a,b);
a=a+b
b=a-b
a=a-b
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