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35 lines
797 B
35 lines
797 B
#include <bits/stdc++.h>
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using namespace std;
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typedef long long LL;
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const int N = 1010;
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struct water {
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int num, time;
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} p[N];
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bool cmp(const water &a, const water &b) {
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if (a.time != b.time) return a.time < b.time;//首先按接水时间排序，谁小，谁在前
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return a.num < b.num;//如果接水时间一样长，那么谁号小谁靠前
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}
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int n;
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LL sum;
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int main() {
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//输入
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scanf("%d", &n);
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for (int i = 1; i <= n; i++) {
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scanf("%d", &p[i].time);
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p[i].num = i;
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}
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//排序
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sort(p + 1, p + n + 1, cmp);
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for (int i = 1; i <= n; i++) {
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printf("%d ", p[i].num); //第几号
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sum += (n - i) * p[i].time; //这个n-i用的妙
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}
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printf("\n%.2lf", 1.0 * sum / n);
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return 0;
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} |