Codeforces Round #348 (div 2) A. Little Artem and Presents
2017-11-13 21:06
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题意：
给一个送礼，一共n个礼物，一次送的数量随意，但是相邻两次不能相同，问最多送几次思路：
错误及反思：
代码：
#include<bits/stdc++.h>
using namespace std;
int main()
{
long long n;
scanf("%I64d",&n);
long long ans=(n/3)*2;
if(n%3) ans++;
printf("%I64d\n",ans);
}
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