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- #include<iostream>
- #include<cstdio>
- #include<cmath>
- #include<string>
- using namespace std;
- int main(){
- int n;
- long long sum=0;
- cin>>n;
- for(int i=1;i<=n;i++){
- long long e=pow(i,i);
- sum+=e;
- }
- cout<<sum;
- return 0;
- }
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