sum没开long long
by 天有不测风云 @ 2021-08-06 16:06:48
好了。
```
#include<iostream>
using namespace std;
int main(){
long long x = 0,n = 0;
cin >> x >> n;
long long sum = 1 + x;
for(int i = 2;i <= n;i++){
sum = sum + sum * x;
}
cout << sum << endl;
return 0;
}
```
by 小杨小小杨 @ 2021-08-06 16:07:08
@[茵飒Insaopuml](/user/545289) long long 不对，用unsigned long long ，题目说了，64位无符号整数
by Zvelig1205 @ 2021-08-06 16:07:46
@[极冬寒雪](/user/413020) 可是我long long 过了诶
可是数据太水？
by 天有不测风云 @ 2021-08-06 16:08:51
@[天有不测风云](/user/109217) 哦，我没试 ~~（逃~~
by Zvelig1205 @ 2021-08-06 16:10:32
@[小杨小小杨](/user/315398) 炒鸡感谢(*￣3￣)╭
by shinechan @ 2021-08-06 16:11:25
@[极冬寒雪](/user/413020) wow~感谢
by shinechan @ 2021-08-06 16:15:20
@[天有不测风云](/user/109217) 感谢啊
by shinechan @ 2021-08-06 16:15:49
# //long long
```cpp
#include <bits/stdc++.h>
using namespace std;
int main()
{
long long x,n,sum=1,i;
cin>>x>>n;
for(i=0;i<n;i++)
{
sum=sum+sum*x;
}
cout<<sum;
return 0;
}
by 110wwf @ 2023-05-27 20:13:26