Submission #602503

#	Time	Username	Problem	Language	Result	Execution time	Memory
602503		SamAnd	Misspelling (JOI22_misspelling)	C++17	28 / 100	13 ms	480 KiB

misspelling

#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define fi first
#define se second
typedef long long ll;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
mt19937 rnf(2106);
const int N = 203, M = 1000000007;

int n, m;
int a[N];

vector<int> v[N];

int dp[N][26][2];

void solv()
{
    cin >> n >> m;
    for (int i = 1; i <= m; ++i)
    {
        int x, y;
        cin >> x >> y;
        if (x == y)
            continue;
        if (x < y)
        {
            v[x].push_back(y);
        }
        else
        {
            v[y].push_back(-x);
        }
    }

    for (int k = 0; k < 26; ++k)
        dp[n][k][0] = 1;
    for (int i = n - 1; i >= 1; --i)
    {
        int s[26] = {};
        for (int k = 0; k < 26; ++k)
        {
            for (int j = i + 1; j <= n; ++j)
            {
                s[k] = (s[k] + dp[j][k][0]) % M;
                s[k] = (s[k] + dp[j][k][1]) % M;
            }
        }
        for (int k = 0; k < 26; ++k)
        {
            for (int u = k + 1; u < 26; ++u)
                dp[i][k][1] = (dp[i][k][1] + s[u]) % M;
            for (int u = 0; u < k; ++u)
                dp[i][k][0] = (dp[i][k][0] + s[u]) % M;
        }
        for(int t = 0; t < sz(v[i]); ++t)
        {
            if (v[i][t] > 0)
            {
                for (int j = i; j < v[i][t]; ++j)
                {
                    for (int k = 0; k < 26; ++k)
                    {
                        dp[j][k][1] = 0;
                    }
                }
            }
            else
            {
                for (int j = i; j < -v[i][t]; ++j)
                {
                    for (int k = 0; k < 26; ++k)
                    {
                        dp[j][k][0] = 0;
                    }
                }
            }
        }
    }

    int ans = 0;
    for (int i = 1; i <= n; ++i)
    {
        for (int k = 0; k < 26; ++k)
        {
            for (int z = 0; z < 2; ++z)
            {
                ans = (ans + dp[i][k][z]) % M;
            }
        }
    }

    cout << ans << "\n";
}

int main()
{
    #ifdef SOMETHING
    freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    #endif // SOMETHING
    ios_base::sync_with_stdio(false), cin.tie(0);

    int tt = 1;
    //cin >> tt;
    while (tt--)
    {
        solv();
    }
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 20 / 20
• Subtask 3: 0 / 29
• Subtask 4: 0 / 32
• Subtask 5: 0 / 11