最长上升子序列—DP

#include <bits/stdc++.h>
#define bug cout << "***************" << endl
#define fuck(x) cout << #x << " -> " << x << endl
#define rep(i, num, e) for (int i = (num); i <= (e); i++)
#define dep(i, num, e) for (int i = (num); i >= (e); i--)
#define endl '\n'
#define int long long
using namespace std;
constexpr int N = 1e6 + 10, inf = 0x3f3f3f3f;
int a[N];
int dp[N]; // 代表的是以下标i结尾的元素的最长子序列
void solve()
{
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
    }
    for (int i = 1; i <= n; i++)
    {
        dp[i] = 1;
        for (int j = 1; j < i; j++)
        {
            if (a[j] < a[i])
                dp[