这个代码是什么意思?(取自洛谷有题)
#include <cstdio>
using namespace std;
int n;
int a[100];
int main() {
scanf("%d", &n);
for (int i = 1; i <= n; ++i)
scanf("%d", &a[i]);
int ans = 1;
for (int i = 1; i <= n; ++i) {
if (i > 1 && a[i] < a[i - 1])
ans = i;
while (ans < n && a[i] >= a[ans + 1])
++ans;
printf("%d\n", ans);
}
return 0;
}