3319 - 奇数项的和及偶数项的积

<span style="font-family:宋体;">输入</span><span>n</span><span style="font-family:宋体;">个数，求出奇数项的和及偶数项的积。</span>

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	<tr>
		<td valign="top" width="284">
			<p class="MsoNormal">
				<span style="font-family:宋体;">输入：</span> 
			</p>
			<p class="MsoNormal">
				<span>10 </span>
			</p>
			<p class="MsoNormal">
				<span>4<span>&nbsp; </span>6<span>&nbsp; </span>9<span>&nbsp; </span>23<span>&nbsp; </span>45<span>&nbsp; </span>5<span>&nbsp; </span>90<span>&nbsp; </span>123<span>&nbsp; </span>3<span>&nbsp; </span>88</span> 
			</p>
		</td>
		<td valign="top" width="284">
			<p class="MsoNormal">
				<span style="font-family:宋体;">输出：</span> 
			</p>
			<p class="MsoNormal">
				<span>151<span>&nbsp; </span>7468560</span> 
			</p>
		</td>
	</tr>
</tbody>

Input

Output

Examples

Input

Output

Solution C++

#include<bits/stdc++.h>
using namespace std;
long long n,a,t=1,s;
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>a;
		if(i%2==0)t*=a;
		if(i%2==1)s+=a;
	}
	cout<<s<<" "<<t;
   return 0;
}

Time Limit	1 second
Memory Limit	128 MB

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