#include <stdio.h>
int main() {
int n = 0;
int arr[500] = { 0 };
int i = 0, j = 0;
scanf("%d", &n);
for (i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
for (i = 0; i < n - 1; i++) {
for (j = 0; j < n - 1 - i; j++) {
int temp;
if (arr[j] < arr[j + 1]) {
temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
}
printf("%d", arr[0]);
return 0;
}

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