oj.uz

Submission #877728

# Submission time Handle Problem Language Result Execution time Memory
877728 2023-11-23T13:26:40 Z Husayn Simple game (IZhO17_game) C++14
0 / 100
 3 ms 10844 KB 
#include <bits/stdc++.h>
using namespace std;
int const maxn = 1e6 + 9;
int a[maxn];
int lazy[maxn << 2];
void push(int v, int l, int r) {
    if(l != r) {
        lazy[v << 1] += lazy[v];
        lazy[v << 1 | 1] += lazy[v];
        lazy[v] = 0;
    } 
}
void updateRange(int v, int tl, int tr, int l, int r, int x) {
    if(tr < l || tl > r) {
        return;
    }
    push(v, tl, tr);
    if(l <= tl && tr <= r) {
        lazy[v] += x;
        push(v, tl, tr);
        return;
    }
    int tm = tl + tr >> 1;
    updateRange(v << 1, tl, tm, l, r, x);
    updateRange(v << 1 | 1, tm + 1, tr, l, r, x);
}
int get(int v, int tl, int tr, int k) {
    push(v, tl, tr);
    if(tl == tr) 
        return lazy[v];
    int tm = tl + tr >> 1;
    return k <= tm ? get(v << 1, tl, tm, k) : get(v << 1 | 1, tm + 1, tr, k); 
    
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, m;
    cin >> n >> m >> a[0];
    for(int i = 1; i < n; i ++) {
        cin >> a[i];
        updateRange(1, 1, maxn - 1, min(a[i - 1], a[i]), max(a[i - 1], a[i]), 1);
    }
    while(m --) {
        int t, i;
        cin >> t >> i;
        i --;
        if(t == 2) {
            cout << get(1, 1, maxn - 1, i) << '\n';
            continue;
        }
        int v;
        cin >> v;
        if(i > 0) {
            updateRange(1, 1, maxn - 1, min(a[i - 1], a[i]), max(a[i - 1], a[i]), -1);
            updateRange(1, 1, maxn - 1, min(a[i - 1], v), max(a[i - 1], v), 1);
        }
        if(i < n - 1) {
            updateRange(1, 1, maxn - 1, min(a[i + 1], a[i]), max(a[i + 1], a[i]), -1);
            updateRange(1, 1, maxn - 1, min(a[i + 1], v), max(a[i + 1], v), 1);
        }
        a[i] = v;
    }
    return 0;
}

Compilation message

game.cpp: In function 'void updateRange(int, int, int, int, int, int)':
game.cpp:23:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   23 |     int tm = tl + tr >> 1;
      |              ~~~^~~~
game.cpp: In function 'int get(int, int, int, int)':
game.cpp:31:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   31 |     int tm = tl + tr >> 1;
      |              ~~~^~~~

Subtask #1
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 3 ms 10716 KB Output is correct
3 Incorrect 3 ms 10844 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 3 ms 10716 KB Output is correct
3 Incorrect 3 ms 10844 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 3 ms 10716 KB Output is correct
3 Incorrect 3 ms 10844 KB Output isn't correct
4 Halted 0 ms 0 KB -