A30704.谁的身高超过平均值 题解

#include <iostream>
#include <cstdio>
using namespace std;

int main() {
    int n, height[20], sum = 0;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> height[i];
        sum += height[i];
    }

    double avg = (double)sum / n;
    printf("AV=%.1f\n", avg);

    bool first = true;
    for (int i = 0; i < n; i++) {
        if (height[i] > avg) {
            if (!first) cout << " ";
            cout << i + 1 << ":" << height[i];
            first = false;
        }
    }
    cout << endl;

    return 0;
}