某杂工 @ 2017-10-29 15:02:50
#include<iostream>
#include<cmath>
using namespace std;
int main(){
int qianshu=0;
int tianshu;
int i,j=0,k=0;
cin>>tianshu;
j=1;
k=1;
for(i=1;i<=tianshu;i++){
qianshu=qianshu+j;
if(k==i)
{
j++;
k+=j;
}
}
cout<<qianshu;
}
by 览遍千秋 @ 2017-10-29 15:06:36
你像极了刚学OI就发错误A+B题解的人
by yin5u @ 2017-10-29 15:11:53
你像极了刚学OI就发错误A+B题解的人 (队型)
by _xcc_ @ 2017-10-29 15:13:20
你像极了刚学OI就发错误A+B题解的人 (队型+1s)
by Frank06 @ 2017-10-29 15:21:49
这不是A+B啊。。。
by 0Koto @ 2017-10-29 15:26:08
秀1A的都是大佬（便乘）
by Conte_di_Cavour @ 2017-10-29 15:47:50
这种题我肯定CE爆0
by hn_ytc @ 2018-01-09 20:22:41
# include <iostream>
using namespace std;
int main()
{
int K,N,ans=0;
cin>>K;
for(N=1;K-N>=0;K-=N++)
ans+=N*N;
cout<<ans+K*N;
return 0;
}by hn_ytc @ 2018-01-09 20:22:50
OK了
by hn_ytc @ 2018-01-09 20:23:12
楼上赞同
by yy233 @ 2018-04-29 14:55:03
#include<bits/stdc++.h>
using namespace std;
int ans,k,i;
int main()
{
cin>>k;
while(k>=0)
{
++i;
ans+=i*i;
k-=i;
}
cout<<ans+k*i<<endl;
return 0;
}