C

#include <stdio.h>

#define MAXSIZE 1010
#define max(a,b) ((a)>(b)?(a):(b))
int n, nums[MAXSIZE], dp[MAXSIZE];

void init() {
    scanf("%d", &n);
    for (int i = 1; i <= n; ++i) {
        scanf("%d", nums+i);
    }
}

int main() {
    init();

    int res = 0;
    for (int i = 1; i <= n; ++i) {
        dp[i] = 1;
        for (int j = 1; j < i; ++j) {
            if (nums[j] < nums[i]) {
                dp[i] = max(dp[i], dp[j]+1);
            }
        }
        res = max(res, dp[i]);
    }
    printf("%d\n", res);

    return 0;
}