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Submission #567351

# Submission time Handle Problem Language Result Execution time Memory
567351 2022-05-23T10:47:35 Z jeff Fish 2 (JOI22_fish2) C++14
8 / 100
 595 ms 21144 KB 
#include <bits/stdc++.h>
using namespace std;

long long N, o[100000], fw[100001], pA[400000];
pair<long long, long long> mA[400000];
vector<pair<long long, long long> > vA[400000];
stack<long long> s;

long long qf(long long i) {long long t = 0; while (i) t += fw[i], i -= i & -i; return t;}
void uf(long long i, long long v) {while (i < 100001) fw[i] += v, i += i & -i;}

long long qpl(long long i, long long p, long long v, long long l, long long h) {
    if (l > p || pA[i] < v) return -1;
    if (l >= h) return l;
    long long c = qpl(i * 2 + 1, p, v, (l + h) / 2 + 1, h);
    if (c > -1) return c;
    return qpl(i * 2, p, v, l, (l + h) / 2);
}

long long qpr(long long i, long long p, long long v, long long l, long long h) {
    if (h < p || pA[i] < v) return -1;
    if (l >= h) return l;
    long long c = qpr(i * 2, p, v, l, (l + h) / 2);
    if (c > -1) return c;
    return qpr(i * 2 + 1, p, v, (l + h) / 2 + 1, h);
}

void up(long long i, long long p, long long v, long long l, long long h) {
    if (p < l || h < p) return;
    if (p <= l && h <= p) {pA[i] = v; return;}
    up(i * 2, p, v, l, (l + h) / 2);
    up(i * 2 + 1, p, v, (l + h) / 2 + 1, h);
    pA[i] = max(pA[i * 2], pA[i * 2 + 1]);
}

void inm(long long i, long long l, long long h) {
    mA[i] = make_pair(0, h - l + 1);
    if (l >= h) return;
    inm(i * 2, l, (l + h) / 2);
    inm(i * 2 + 1, (l + h) / 2 + 1, h);
}

pair<long long, long long> qm(long long i, long long a, long long b, long long l, long long h) {
    if (b < l || h < a) return make_pair(LLONG_MAX, 0);
    if (a <= l && h <= b) return mA[i];
    pair<long long, long long> pa = qm(i * 2, a, b, l, (l + h) / 2), pb = qm(i * 2 + 1, a, b, (l + h) / 2 + 1, h);
    if (pa > pb) swap(pa, pb);
    if (pa.first == pb.first) pa.second += pb.second;
    return pa;
}

void um(long long i, long long a, long long b, long long v, long long l, long long h) {
    if (b < l || h < a) return;
    if (a <= l && h <= b) {mA[i].first += v; return;}
    um(i * 2, a, b, v, l, (l + h) / 2);
    um(i * 2 + 1, a, b, v, (l + h) / 2 + 1, h);
    mA[i] = min(mA[i * 2], mA[i * 2 + 1]);
    if (mA[i * 2].first == mA[i * 2 + 1].first) mA[i].second = mA[i * 2].second + mA[i * 2 + 1].second;
}

void qv(long long i, long long p, long long l, long long h) {
    if (p < l || h < p) return;
    for (long long j = 0; j < vA[i].size(); ++j) if (vA[i][j].first <= p && p <= vA[i][j].second && min(o[vA[i][j].first], o[vA[i][j].second]) <= qf(vA[i][j].second) - qf(vA[i][j].first + 1)) {
        um(1, vA[i][j].first + 1, vA[i][j].second - 1, -1, 0, N - 1);
        swap(vA[i][j], vA[i].back());
        vA[i].pop_back();
        --j;
    }
    qv(i * 2, p, l, (l + h) / 2 - 1);
    qv(i * 2 + 1, p, (l + h) / 2 + 1, h);
}

void uv(long long i, long long a, long long b, long long l, long long h) {
    if (a + 1 == b) return;
    if (b < l || h < a) return;
    if (a <= (l + h) / 2 && (l + h) / 2 <= b) {
        for (long long j = 0; j < vA[i].size(); ++j) if (a == vA[i][j].first && b == vA[i][j].second) return;
        um(1, a + 1, b - 1, 1, 0, N - 1);
        vA[i].emplace_back(a, b);
        return;
    }
    uv(i * 2, a, b, l, (l + h) / 2 - 1);
    uv(i * 2 + 1, a, b, (l + h) / 2 + 1, h);
}

int main() {
    long long Q, t, a, b, l, h, i, j;
    scanf("%lld", &N);
    inm(1, 0, N - 1);
    for (i = 0; i < N; ++i) scanf("%lld", &o[i]), uf(i + 1, o[i]), up(1, i, o[i], 0, N - 1);
    for (i = 0; i < N; ++i) {
        while (!s.empty() && o[s.top()] <= o[i]) {if (o[s.top()] > qf(i) - qf(s.top() + 1)) uv(1, s.top(), i, 0, N - 1); s.pop();}
        if (!s.empty() && o[i] > qf(i) - qf(s.top() + 1)) uv(1, s.top(), i, 0, N - 1);
        s.push(i);
    }
    scanf("%lld", &Q);
    for (i = 0; i < Q; ++i) {
        scanf("%lld %lld %lld", &t, &a, &b);
        --a;
        if (t == 1) {
            uf(a + 1, b - o[a]);
            up(1, a, b, 0, N - 1);
            if (o[a] < b) {
                o[a] = b;
                qv(1, a, 0, N - 1);
                for (l = a - 1; l > -1; l = qpl(1, l - 1, qf(a) - qf(l) + 1, 0, N - 1)) {
                    if (min(o[l], o[a]) > qf(a) - qf(l + 1)) uv(1, l, a, 0, N - 1);
                    if (o[l] >= o[a]) break;
                }
                for (h = a + 1; h > -1; h = qpr(1, h + 1, qf(h + 1) - qf(a + 1) + 1, 0, N - 1)) {
                    if (min(o[a], o[h]) > qf(h) - qf(a + 1)) uv(1, a, h, 0, N - 1);
                    if (o[a] <= o[h]) break;
                }
            } else {
                o[a] = b;
                qv(1, a, 0, N - 1);
                l = qpl(1, a - 1, o[a] + 1, 0, N - 1);
                h = qpr(1, a + 1, o[a] + 1, 0, N - 1);
                while (l > -1 && h > -1) {
                    if (min(o[l], o[h]) > qf(h) - qf(l + 1)) uv(1, l, h, 0, N - 1);
                    if (o[l] < o[h]) l = qpl(1, l - 1, qf(h) - qf(l) + 1, 0, N - 1);
                    else h = qpr(1, h + 1, qf(h + 1) - qf(l + 1) + 1, 0, N - 1);
                }
            }
        } else {
            --b;
            l = a;
            h = b;
            for (j = a; j > -1 && j <= b; j = qpr(1, j + 1, qf(j + 1) - qf(a) + 1, 0, N - 1)) if (o[j] > qf(j) - qf(a)) l = j;
            for (j = b; j >= a; j = qpl(1, j - 1, qf(b + 1) - qf(j) + 1, 0, N - 1)) if (o[j] > qf(b + 1) - qf(j + 1)) h = j;
            printf("%lld\n", qm(1, l, h, 0, N - 1).second);
        }
    }
    return 0;
}

Compilation message

fish2.cpp: In function 'void qv(long long int, long long int, long long int, long long int)':
fish2.cpp:63:29: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |     for (long long j = 0; j < vA[i].size(); ++j) if (vA[i][j].first <= p && p <= vA[i][j].second && min(o[vA[i][j].first], o[vA[i][j].second]) <= qf(vA[i][j].second) - qf(vA[i][j].first + 1)) {
      |                           ~~^~~~~~~~~~~~~~
fish2.cpp: In function 'void uv(long long int, long long int, long long int, long long int, long long int)':
fish2.cpp:77:33: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |         for (long long j = 0; j < vA[i].size(); ++j) if (a == vA[i][j].first && b == vA[i][j].second) return;
      |                               ~~^~~~~~~~~~~~~~
fish2.cpp: In function 'int main()':
fish2.cpp:88:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |     scanf("%lld", &N);
      |     ~~~~~^~~~~~~~~~~~
fish2.cpp:90:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   90 |     for (i = 0; i < N; ++i) scanf("%lld", &o[i]), uf(i + 1, o[i]), up(1, i, o[i], 0, N - 1);
      |                             ~~~~~^~~~~~~~~~~~~~~
fish2.cpp:96:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |     scanf("%lld", &Q);
      |     ~~~~~^~~~~~~~~~~~
fish2.cpp:98:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |         scanf("%lld %lld %lld", &t, &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 8 ms 9700 KB Output is correct
4 Correct 8 ms 9664 KB Output is correct
5 Incorrect 8 ms 9684 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9700 KB Output is correct
2 Correct 78 ms 19916 KB Output is correct
3 Correct 92 ms 19520 KB Output is correct
4 Correct 122 ms 19948 KB Output is correct
5 Correct 90 ms 19520 KB Output is correct
6 Correct 64 ms 19436 KB Output is correct
7 Correct 66 ms 18236 KB Output is correct
8 Correct 62 ms 19540 KB Output is correct
9 Correct 65 ms 18272 KB Output is correct
10 Correct 77 ms 18984 KB Output is correct
11 Correct 82 ms 18552 KB Output is correct
12 Correct 86 ms 18624 KB Output is correct
13 Correct 69 ms 18692 KB Output is correct
14 Correct 81 ms 19712 KB Output is correct
15 Correct 81 ms 19652 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 8 ms 9700 KB Output is correct
4 Correct 8 ms 9664 KB Output is correct
5 Incorrect 8 ms 9684 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9700 KB Output is correct
2 Correct 78 ms 19916 KB Output is correct
3 Correct 92 ms 19520 KB Output is correct
4 Correct 122 ms 19948 KB Output is correct
5 Correct 90 ms 19520 KB Output is correct
6 Correct 64 ms 19436 KB Output is correct
7 Correct 66 ms 18236 KB Output is correct
8 Correct 62 ms 19540 KB Output is correct
9 Correct 65 ms 18272 KB Output is correct
10 Correct 77 ms 18984 KB Output is correct
11 Correct 82 ms 18552 KB Output is correct
12 Correct 86 ms 18624 KB Output is correct
13 Correct 69 ms 18692 KB Output is correct
14 Correct 81 ms 19712 KB Output is correct
15 Correct 81 ms 19652 KB Output is correct
16 Correct 6 ms 9704 KB Output is correct
17 Incorrect 565 ms 21144 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9700 KB Output is correct
2 Correct 78 ms 19916 KB Output is correct
3 Correct 92 ms 19520 KB Output is correct
4 Correct 122 ms 19948 KB Output is correct
5 Correct 90 ms 19520 KB Output is correct
6 Correct 64 ms 19436 KB Output is correct
7 Correct 66 ms 18236 KB Output is correct
8 Correct 62 ms 19540 KB Output is correct
9 Correct 65 ms 18272 KB Output is correct
10 Correct 77 ms 18984 KB Output is correct
11 Correct 82 ms 18552 KB Output is correct
12 Correct 86 ms 18624 KB Output is correct
13 Correct 69 ms 18692 KB Output is correct
14 Correct 81 ms 19712 KB Output is correct
15 Correct 81 ms 19652 KB Output is correct
16 Correct 6 ms 9704 KB Output is correct
17 Incorrect 595 ms 21020 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 8 ms 9700 KB Output is correct
4 Correct 8 ms 9664 KB Output is correct
5 Incorrect 8 ms 9684 KB Output isn't correct
6 Halted 0 ms 0 KB -