oj.uz

Submission #873880

# Submission time Handle Problem Language Result Execution time Memory
873880 2023-11-16T02:27:32 Z noiaint Simple game (IZhO17_game) C++17
100 / 100
 46 ms 8920 KB 
#include <bits/stdc++.h>

using namespace std;

#define file ""

#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()

#define getbit(x, i) (((x) >> (i)) & 1)
#define bit(x) (1LL << (x))
#define popcount __builtin_popcountll

mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) {
    return l + rd() % (r - l + 1);
}

const int N = 1e6 + 5;
const int mod = (int)1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int oo = 1e9;
const long long ooo = 1e18;

template<class X, class Y> bool mini(X &a, Y b) {
    return a > b ? (a = b, true) : false;
}
template<class X, class Y> bool maxi(X &a, Y b) {
    return a < b ? (a = b, true) : false;
}
void add(int &a, int b) {
    a += b;
    if (a >= mod) a -= mod;
    if (a < 0) a += mod;
}

int n, q;
int h[N];
int bit[N];

void update(int u, int c) {
    for (; u < N; u += u & (-u)) bit[u] += c;
}
int get(int u) {
    int res = 0;
    for (; u > 0; u -= u & (-u)) res += bit[u];
    return res;
}
int get(int l, int r) {
    return get(r) - get(l - 1);
}
void update(int l, int r, int c) {
    update(l, c);
    update(r + 1, -c);
}

void add(int i) {
    if (i < 1 || i >= n) return;
    int l = min(h[i], h[i + 1]);
    int r = max(h[i], h[i + 1]);
    update(l, r, 1);
}
void del(int i) {
    if (i < 1 || i >= n) return;
    int l = min(h[i], h[i + 1]);
    int r = max(h[i], h[i + 1]);
    update(l, r, -1);
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    // freopen(file".inp", "r", stdin);
    // freopen(file".out", "w", stdout);

    cin >> n >> q;
    for (int i = 1; i <= n; ++i)
        cin >> h[i];

    for (int i = 1; i <= n; ++i)
        add(i);

    while (q--) {
        int op;
        cin >> op;
        if (op == 1) {
            int pos, newH;
            cin >> pos >> newH;
            del(pos - 1);
            del(pos);
            h[pos] = newH;
            add(pos - 1);
            add(pos);
        }
        else {
            int x;
            cin >> x;
            cout << get(x) << '\n';
        }
    }

    return 0;
}

/*

*/

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4700 KB Output is correct
3 Correct 1 ms 4576 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4700 KB Output is correct
3 Correct 1 ms 4576 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 29 ms 7516 KB Output is correct
9 Correct 31 ms 8876 KB Output is correct
10 Correct 30 ms 8784 KB Output is correct
11 Correct 29 ms 7504 KB Output is correct
12 Correct 29 ms 8528 KB Output is correct
13 Correct 29 ms 8688 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4700 KB Output is correct
3 Correct 1 ms 4576 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 29 ms 7516 KB Output is correct
9 Correct 31 ms 8876 KB Output is correct
10 Correct 30 ms 8784 KB Output is correct
11 Correct 29 ms 7504 KB Output is correct
12 Correct 29 ms 8528 KB Output is correct
13 Correct 29 ms 8688 KB Output is correct
14 Correct 39 ms 8760 KB Output is correct
15 Correct 38 ms 8788 KB Output is correct
16 Correct 46 ms 8920 KB Output is correct
17 Correct 39 ms 8788 KB Output is correct
18 Correct 40 ms 8788 KB Output is correct