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- #include <iostream>
- #include <cstdio>
- #include <algorithm>
- #include <vector>
- #define task "SURF"
- using namespace std;
- using ll = long long;
- using ld = long double;
- constexpr int N = 1e4 + 2;
- constexpr int mod = 2019;
- constexpr int Inf = 1e9 + 7;
- int m, n, a[N], b[N];
- int dp[N][2], f[N][2], ans(0);
- int cur[N];
- vector<int> pos[N];
- void Read()
- {
- cin >> m >> n;
- for (int i = 1; i <= m; ++i)
- cin >> a[i];
- for (int i = 1; i <= n; ++i)
- {
- cin >> b[i];
- pos[b[i]].emplace_back(i);
- }
- }
- inline void Add(int &x, int y)
- {
- x += y;
- if (x >= mod)
- x -= mod;
- else if (x < 0)
- x += mod;
- }
- void calDP(int sign)
- {
- dp[0][0] = dp[0][1] = 0;
- f[0][0] = f[0][1] = 1;
- b[0] = sign;
- for (int i = 1; i <= m; ++i)
- {
- int max0(-Inf), max1(-Inf), cnt0(0), cnt1(0);
- for (int j = 0; j <= n; ++j)
- if (b[j] > a[i])
- {
- if (max1 < dp[j][1])
- {
- max1 = dp[j][1];
- cnt1 = f[j][1];
- }
- else if (max1 == dp[j][1])
- Add(cnt1, f[j][1]);
- }
- else if (b[j] < a[i])
- {
- if (max0 < dp[j][0])
- {
- max0 = dp[j][0];
- cnt0 = f[j][0];
- }
- else if (max0 == dp[j][0])
- Add(cnt0, f[j][0]);
- }
- else
- {
- if (max1 + 1 >= dp[j][0])
- {
- dp[j][0] = max1 + 1;
- f[j][0] = cnt1;
- }
- if (max0 + 1 >= dp[j][1])
- {
- dp[j][1] = max0 + 1;
- f[j][1] = cnt0;
- }
- }
- for (int j = (int)pos[a[i]].size() - 1; j > 0; --j)
- {
- if (dp[pos[a[i]][j]][0] == dp[pos[a[i]][j - 1]][0])
- Add(f[pos[a[i]][j]][0], -f[pos[a[i]][j - 1]][0]);
- if (dp[pos[a[i]][j]][1] == dp[pos[a[i]][j - 1]][1])
- Add(f[pos[a[i]][j]][1], -f[pos[a[i]][j - 1]][1]);
- }
- }
- }
- void Solve()
- {
- calDP(0);
- int maxn = *max_element(&dp[0][0], (&dp[0][0]) + N * 2);
- for (int i = 1; i <= n; ++i)
- {
- if (dp[i][0] == maxn)
- (ans += f[i][0]) %= mod;
- if (dp[i][1] == maxn)
- (ans += f[i][1]) %= mod;
- dp[i][0] = f[i][0] = dp[i][1] = f[i][1] = 0;
- }
- calDP(N);
- int maxn2 = *max_element(&dp[0][0], (&dp[0][0]) + N * 2);
- //cout << maxn << " " << maxn2 << "\n";
- if (maxn2 > maxn)
- {
- maxn = maxn2;
- ans = 0;
- }
- for (int i = 1; i <= n; ++i)
- {
- //cout << i << ": " << dp[i][0] << " " << dp[i][1] << " " << f[i][0] << " " << f[i][1] << "\n";
- if (dp[i][0] == maxn)
- (ans += f[i][0]) %= mod;
- if (dp[i][1] == maxn)
- (ans += f[i][1]) %= mod;
- }
- if (maxn < 3)
- {
- cout << 0;
- return;
- }
- cout << maxn << "\n"
- << ans;
- }
- int32_t main()
- {
- ios_base::sync_with_stdio(0);
- cin.tie(0);
- cout.tie(0);
- if (fopen(task ".INP", "r"))
- {
- freopen(task ".INP", "r", stdin);
- freopen(task ".OUT", "w", stdout);
- }
- Read();
- Solve();
- }
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