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Submission #567191

# Submission time Handle Problem Language Result Execution time Memory
567191 2022-05-23T09:02:36 Z jeff Fish 2 (JOI22_fish2) C++14
8 / 100
 729 ms 21228 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 (l <= p && p <= h && 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 (min(o[s.top()], o[i]) > qf(i) - qf(s.top() + 1)) uv(1, s.top(), i, 0, N - 1); s.pop();}
        if (!s.empty() && min(o[s.top()], 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 - 1, 0, N - 1);
                qv(1, a + 1, 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 (l <= p && p <= h && 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 5 ms 9684 KB Output is correct
2 Correct 7 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Incorrect 10 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 9704 KB Output is correct
2 Correct 105 ms 19856 KB Output is correct
3 Correct 70 ms 19488 KB Output is correct
4 Correct 69 ms 19900 KB Output is correct
5 Correct 67 ms 19512 KB Output is correct
6 Correct 62 ms 19496 KB Output is correct
7 Correct 49 ms 18332 KB Output is correct
8 Correct 67 ms 19532 KB Output is correct
9 Correct 51 ms 18252 KB Output is correct
10 Correct 56 ms 18816 KB Output is correct
11 Correct 54 ms 18628 KB Output is correct
12 Correct 55 ms 18692 KB Output is correct
13 Correct 56 ms 18692 KB Output is correct
14 Correct 69 ms 19700 KB Output is correct
15 Correct 64 ms 19596 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 7 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Incorrect 10 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 9704 KB Output is correct
2 Correct 105 ms 19856 KB Output is correct
3 Correct 70 ms 19488 KB Output is correct
4 Correct 69 ms 19900 KB Output is correct
5 Correct 67 ms 19512 KB Output is correct
6 Correct 62 ms 19496 KB Output is correct
7 Correct 49 ms 18332 KB Output is correct
8 Correct 67 ms 19532 KB Output is correct
9 Correct 51 ms 18252 KB Output is correct
10 Correct 56 ms 18816 KB Output is correct
11 Correct 54 ms 18628 KB Output is correct
12 Correct 55 ms 18692 KB Output is correct
13 Correct 56 ms 18692 KB Output is correct
14 Correct 69 ms 19700 KB Output is correct
15 Correct 64 ms 19596 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Incorrect 439 ms 21212 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 9704 KB Output is correct
2 Correct 105 ms 19856 KB Output is correct
3 Correct 70 ms 19488 KB Output is correct
4 Correct 69 ms 19900 KB Output is correct
5 Correct 67 ms 19512 KB Output is correct
6 Correct 62 ms 19496 KB Output is correct
7 Correct 49 ms 18332 KB Output is correct
8 Correct 67 ms 19532 KB Output is correct
9 Correct 51 ms 18252 KB Output is correct
10 Correct 56 ms 18816 KB Output is correct
11 Correct 54 ms 18628 KB Output is correct
12 Correct 55 ms 18692 KB Output is correct
13 Correct 56 ms 18692 KB Output is correct
14 Correct 69 ms 19700 KB Output is correct
15 Correct 64 ms 19596 KB Output is correct
16 Correct 6 ms 9684 KB Output is correct
17 Incorrect 729 ms 21228 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 7 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 5 ms 9684 KB Output is correct
5 Incorrect 10 ms 9684 KB Output isn't correct
6 Halted 0 ms 0 KB -