Submission #1346416

#TimeUsernameProblemLanguageResultExecution timeMemory
13464164o2aZagi (COCI25_zagi)C++20
81 / 110
3097 ms91752 KiB
#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define _F "what"
using namespace std;
typedef long long ll;

constexpr int N = 1e5 + 67, M = 33, INF = 1e9 + 67;

pair<int, int> f[N][M], g[N][M];
int n, q, pfx[N][M], cnt[M], lf[N][M], rt[N][M], a[N];
bool mark[M];

void solve()
{
    int n, q; cin>>n>>q;
    for (int i = 1; i <= n; ++i)
        cin>>a[i];
    fill(rt[n+1]+1, rt[n+1]+M, n+1);
    for (int i = n; i >= 1; --i)
    {
        for (int j = 1; j < M; ++j)
            rt[i][j] = rt[i+1][j];
        rt[i][a[i]] = i;
    }
    for (int i = 1; i <= n; ++i)
    {
        for (int j = 1; j < M; ++j)
            lf[i][j] = lf[i-1][j];
        lf[i][a[i]] = i;
    }
    for (int i = 1; i <= n; ++i)
        f[i][0] = {i-1, 0}, g[i][0] = {i+1, 0};
    for (int j = 1; j < M; ++j)
    {
        int sc = 0, r = 0;
        for (int i = 1; i <= n; ++i)
        {
            while (r < n && (cnt[a[r+1]] > 0 || sc < j))
            {
                ++r;
                ++cnt[a[r]];
                if (cnt[a[r]] == 1)
                    ++sc;
            }
            if (sc < j)
            {
                fill(cnt+1, cnt+M, 0);
                sc = 0;
                break;
            }
            for (int x = 1; x < M; ++x)
                if (rt[i][x] <= r)
                {
                    int lb = rt[i][x], rb = lf[r][x];
                    auto itl = lower_bound(f[i], f[i]+j, make_pair(lb-1, -1));
                    auto itr = lower_bound(g[r], g[r]+j, make_pair(rb+1, INF), greater<pair<int, int>>());
                    int s = (itl->se)^(pfx[rb][x]^pfx[lb][x])^(itr->se);
                    if (s < M)
                        mark[s] = true;
                }
            int s = 0;
            for (; s < M; ++s)
                if (!mark[s])
                    break;
            fill(mark, mark+M, false);
            f[i][j] = {r, s};
            --cnt[a[i]];
            if (cnt[a[i]] == 0)
                --sc;
        }
        sc = 0;
        int l = n+1;
        for (int i = n; i >= 1; --i)
        {
            while (l > 1 && (cnt[a[l-1]] > 0 || sc < j))
            {
                --l;
                ++cnt[a[l]];
                if (cnt[a[l]] == 1)
                    ++sc;
            }
            if (sc < j)
            {
                fill(cnt+1, cnt+M, 0);
                sc = 0;
                break;
            }
            for (int x = 1; x < M; ++x)
                if (lf[i][x] >= l)
                {
                    int lb = rt[l][x], rb = lf[i][x];
                    auto itl = lower_bound(f[l], f[l]+j, make_pair(lb-1, -1));
                    auto itr = lower_bound(g[i], g[i]+j, make_pair(rb+1, INF), greater<pair<int, int>>());
                    int s = (itl->se)^(pfx[rb][x]^pfx[lb][x])^(itr->se);
                    if (s < M)
                        mark[s] = true;
                }
            int s = 0;
            for (; s < M; ++s)
                if (!mark[s])
                    break;
            fill(mark, mark+M, false);
            g[i][j] = {l, s};
            --cnt[a[i]];
            if (cnt[a[i]] == 0)
                --sc;
        }
        for (int x = 1; x < M; ++x)
        {
            int pre = 1, k = 0;
            for (int i = 1; i <= n; ++i)
            {
                if (a[i] == x)
                {
                    pfx[i][x] = pfx[i-1][x];
                    if (i < n && a[i+1] != x)
                    {
                        fill(mark+1, mark+M, false);
                        mark[a[i+1]] = true;
                        pre = i+1;
                        k = 0;
                    }
                }
                else if (i == n || !mark[a[i+1]])
                {
                    pfx[i][x] = pfx[pre-1][x]^(f[pre][++k].se);
                    if (i < n)
                        mark[a[i+1]] = true;
                }
            }
            fill(mark+1, mark+M, false);
        }
    }
//    for (int j = 1; j <= 4; ++j)
//    {
//        for (int i = 1; i <= n; ++i)
//            cout<<f[i][j].se<<" ";
//        cout<<endl;
//    }
//    cout<<endl;
//    for (int j = 1; j <= 4; ++j)
//    {
//        for (int i = 1; i <= n; ++i)
//            cout<<g[i][j].se<<" ";
//        cout<<endl;
//    }
//    cout<<endl;
//    for (int j = 1; j <= 4; ++j)
//    {
//        for (int i = 1; i <= n; ++i)
//            cout<<pfx[i][j]<<" ";
//        cout<<endl;
//    }
//    cout<<endl;
    while (q--)
    {
        int l, r; cin>>l>>r;
        bool flag = false;
        for (int x = 1; x < M; ++x)
            if (rt[l][x] <= r)
            {
                int lb = rt[l][x], rb = lf[r][x];
                int s = pfx[rb][x]^pfx[lb][x];
                for (int j = 0; j < M; ++j)
                    if (f[l][j].fi == lb-1)
                    {
                        s ^= f[l][j].se;
                        break;
                    }
                for (int j = 0; j < M; ++j)
                    if (g[r][j].fi == rb+1)
                    {
                        s ^= g[r][j].se;
                        break;
                    }
                if (s == 0)
                    flag = true;
            }
        cout<<(flag ? "Toni\n" : "Jakov\n");
    }
}

int main()
{
    if (fopen(_F".INP", "r"))
    {
        freopen(_F".INP", "r", stdin);
        freopen(_F".OUT", "w", stdout);
    }
    else if (fopen("test.inp", "r"))
    {
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int Test = 1; //cin>>Test;
    while (Test--) solve();
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:189:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  189 |         freopen(_F".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:190:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  190 |         freopen(_F".OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:194:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  194 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:195:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  195 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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