3187 - 求20个同学的总分和平均分

<span style="font-family:宋体;font-size:12pt;">输入</span><span style="font-size:12pt;">20</span><span style="font-family:宋体;font-size:12pt;">个同学的成绩，求他们的总成绩和平均成绩！</span><span style="font-size:12pt;"></span>

<span style="font-family:宋体;font-size:12pt;">输入格式：</span><span style="font-size:12pt;"></span>

<span style="font-family:宋体;font-size:12pt;">第一行，输入</span><span style="font-size:12pt;">20</span><span style="font-family:宋体;font-size:12pt;">个整数</span><span style="font-size:12pt;">a</span>

<span style="font-family:宋体;font-size:12pt;">输出格式：</span><span style="font-size:12pt;"></span>

<span style="font-family:宋体;font-size:12pt;">输出有</span><span style="font-size:12pt;">2</span><span style="font-family:宋体;font-size:12pt;">行，</span>

<span style="font-family:宋体;font-size:12pt;">第一是总分;</span>

<span style="font-family:宋体;font-size:12pt;">第二行是平均分。（保留</span><span style="font-size:12pt;">1</span><span style="font-family:宋体;font-size:12pt;">位小数）</span><span style="font-size:12pt;"></span>

<span style="font-size:12pt;"><span></span></span>

Input

Output

Examples

Input

100 90 80 100 70 100 60 45 89 100 100 60 100 78 100 30 90 100 100 100

Output

1692
84.6

Solution C

#include <stdio.h>
int a, t, i;
int main(void) {
    for (i = 1; i <= 20; i++) {
        scanf("%d", &a);
        t += a;
    }    
    printf("%d\n%.1f\n", t, t / 20.0);
    return 0;
}

Solution C++

#include<iostream>

#include<cstdio>

using namespace std;

int main()
{
	double a,s;
	s=0;
	for (int i=1;i<=20;i++)
	{
		cin>>a;
		s=s+a;
	}
	cout<<s<<endl;
	printf("%.1lf",s/20);
	return 0;
}

Time Limit	1 second
Memory Limit	128 MB

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