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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#104486#5098. 第一代图灵机bashkort0 532ms31524kbC++203.4kb2023-05-10 20:42:492023-05-10 20:42:53

Judging History

This is the latest submission verdict.

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-05-10 20:42:53]
  • Judged
  • Verdict: 0
  • Time: 532ms
  • Memory: 31524kb
  • [2023-05-10 20:42:49]
  • Submitted

answer

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

constexpr int N = 2e5 + 228;

ll pref[N];
int n;

namespace ST {
    struct Info {
        ll ans = 0;
        int mn = 0;
    };

    vector<Info> t;
    vector<ll> ansL;
    int sz = 1;

    ll vertexQuery(int x, int mn) {
        if (x >= sz) {
            if (x - sz >= n) {
                return 0;
            }
            return t[x].mn >= mn ? 0 : pref[mn] - pref[x - sz + 1];
        }

        if (t[x << 1 | 1].mn < mn) {
            return max(ansL[x], vertexQuery(x << 1 | 1, mn));
        } else {
            return vertexQuery(x << 1, mn);
        }
    }

    void pull(int x) {
        t[x].mn = min(t[x << 1].mn, t[x << 1 | 1].mn);
        ansL[x] = vertexQuery(x << 1, t[x << 1 | 1].mn);
        t[x].ans = max(ansL[x], t[x << 1 | 1].ans);
    }

    void init(int n, vector<int> nxt) {
        sz = 1 << __lg(n) + !!(n & (n - 1));
        t.assign(sz << 1, Info());
        ansL.assign(sz << 1, 0);

        for (int i = 0; i < n; ++i) {
            t[i + sz].mn = nxt[i];
            t[i + sz].ans = 0;
        }
        for (int i = sz - 1; i > 0; --i) {
            pull(i);
        }
    }

    ll rangeQuery(int l, int r, int &mn, int x = 1, int lx = 0, int rx = sz) {
        if (l >= rx || lx >= r) {
            return 0;
        }
        if (l <= lx && rx <= r) {
            ll ans = vertexQuery(x, mn);
            mn = min(mn, t[x].mn);
            return ans;
        }
        int mid = lx + rx >> 1;
        return rangeQuery(l, r, mn, x << 1 | 1, mid, rx) + rangeQuery(l, r, mn, x << 1, lx, mid);
    }

    void modify(int x, int i) {
        t[x + sz].mn = i;
        t[x + sz].ans = 0;
        for (x += sz; x >>= 1;) {
            pull(x);
        }
    }
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int m, q;
    cin >> n >> m >> q;

    for (int i = 1; i <= n; ++i) {
        cin >> pref[i];
        pref[i] += pref[i - 1];
    }

    vector<int> c(n), nxt(n, n), last(m, -1);
    vector<set<int>> st(m);

    for (int i = 0; i < m; ++i) {
        st[i].insert(-1);
        st[i].insert(n);
    }

    for (int i = 0; i < n; ++i) {
        cin >> c[i];
        c[i] -= 1;
        st[c[i]].insert(i);

        if (last[c[i]] != -1) {
            nxt[last[c[i]]] = i;
        }
        last[c[i]] = i;
    }

    ST::init(n, nxt);

    auto modify = [&](int x, int to) {
        nxt[x] = to;
        ST::modify(x, to);
    };

    auto replace = [&](int x, int col) {
        if (c[x] == col) {
            return;
        }

        st[c[x]].erase(x);
        st[col].insert(x);

        int p = *prev(st[c[x]].lower_bound(x));
        int np = *prev(st[col].lower_bound(x));
        int nx = *st[col].upper_bound(x);
        int npx = *st[c[x]].upper_bound(p);

        if (p != -1) {
            modify(p, npx);
        }
        if (np != -1) {
            modify(np, x);
        }
        modify(x, nx);

        c[x] = col;
    };
    
    auto query = [&](int l, int r) -> ll {
        ll ans = ST::rangeQuery(l, r, r);
        return max(ans, pref[r] - pref[l]);
    };

    while (q--) {
        int tp, a, b;
        cin >> tp >> a >> b;
        a -= 1;

        if (tp == 1) {
            cout << query(a, b) << '\n';
        } else {
            replace(a, b - 1);
        }
    }

    return 0;
}


Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 1ms
memory: 3796kb

input:

5000 200 5000
2315 3433 1793 4621 4627 4561 289 4399 3822 2392 392 4581 2643 2441 4572 4649 2981 3094 4206 2057 761 2516 2849 3509 3033 658 4965 3316 3269 4284 4961 753 1187 2515 1377 1725 4743 4761 3823 3464 4859 989 2401 953 875 1481 2181 103 2067 2625 3296 4721 61 3843 1607 997 4385 1284 4299 441...

output:

673044
432084
170040
436103
498818
379109
284337
578436
436501
536883
504560
590193
685951
575901
206744
226912
382941
212294
147144
416293
668690
446562
747981
39374
310221
688091
338804
437089
388838
278109
371646
329512
565595
744050
325849
524564
761675
462638
517359
61130
559608
250262
570606
5...

result:

wrong answer 1st lines differ - expected: '118571', found: '673044'

Subtask #2:

score: 0
Wrong Answer

Test #3:

score: 0
Wrong Answer
time: 532ms
memory: 28796kb

input:

200000 10 200000
55651 97298 108697 86619 60721 199951 10610 162267 154301 138848 39191 18605 101369 57073 34977 101576 71252 143401 89587 160521 166491 38442 150761 35579 25571 121311 38033 38483 144639 41401 179161 54872 157905 137601 46863 187656 171901 43715 41036 150741 69057 102031 130561 4772...

output:

14258783
7637402
13354673
12581487
14077724
15794355
14974603
14939393
8629118
14665674
9070683
9868748
13398825
13405763
10898870
12008249
8308139
9342839
12797133
14186591
13357350
10127229
13957815
10759796
10239286
13654951
10265430
13251671
10209969
11614554
8507646
12275829
15635603
11566191
1...

result:

wrong answer 1st lines differ - expected: '1232419', found: '14258783'

Subtask #3:

score: 0
Wrong Answer

Test #5:

score: 0
Wrong Answer
time: 483ms
memory: 31524kb

input:

200000 20000 200000
30681 32496 35471 48191 159123 69792 120915 150673 187226 158493 36275 26856 107976 124777 145229 69745 183961 14497 144808 153612 185893 137681 66417 46802 19345 113322 168046 128149 191001 135433 13201 139214 59489 81178 42343 163158 110121 119201 97501 53079 158755 192241 1132...

output:

288959490
390354633
229413762
227787790
163018654
396092274
259560882
301064886
300952561
228824761
90094545
104254456
218156791
357861127
388010490
161887696
305756196
226106022
340743326
188721726
361119944
261384248
272973108
180995929
275406968
158375004
375861875
101853609
357600004
216777932
3...

result:

wrong answer 1st lines differ - expected: '46702944', found: '288959490'

Subtask #4:

score: 0
Skipped

Dependency #1:

0%

Subtask #5:

score: 0
Skipped

Dependency #4:

0%