oj.uz

Submission #399959

# Submission time Handle Problem Language Result Execution time Memory
399959 2021-05-07T01:03:12 Z syl123456 Simple game (IZhO17_game) C++17
100 / 100
 475 ms 95684 KB 
#include <bits/stdc++.h>
#define all(i) (i).begin(), (i).end()
#define debug(x) cerr << "Line(" << __LINE__ << ") -> " << #x << " is " << x << endl
using namespace std;
template<typename T1, typename T2>
ostream& operator << (ostream &i, pair<T1, T2> j) {
    return i << j.first << ' ' << j.second;
}
template<typename T>
ostream& operator << (ostream &i, vector<T> j) {
    i << '{' << j.size() << ':';
    for (T ii : j) i << ' ' << ii;
    return i << '}';
}
typedef long long ll;
typedef pair<int, int> pi;
struct seg {
    int l, r, v;
    seg *ch[2]{};
    seg(int _l, int _r) : l(_l), r(_r), v(0) {
        if (l < r - 1) ch[0] = new seg(l, l + r >> 1), ch[1] = new seg(l + r >> 1, r);
    }
    void modify(int _l, int _r, int _d) {
        if (_l >= _r) return;
        if (_l <= l && r <= _r) {
            v += _d;
            return;
        }
        push();
        if (_l < l + r >> 1) ch[0]->modify(_l, _r, _d);
        if (l + r >> 1 < _r) ch[1]->modify(_l, _r, _d);
    }
    void push() {
        ch[0]->v += v, ch[1]->v += v, v = 0;
    }
    int query(int i) {
        if (l == r - 1) return v;
        push();
        return ch[i >= l + r >> 1]->query(i);
    }
} rt(0, 1e6 + 5);
int main() {
    ios::sync_with_stdio(0), cin.tie(0);
    int n, m;
    cin >> n >> m;
    int a[n];
    for (int &i : a) cin >> i;
    for (int i = 1; i < n; ++i)
        rt.modify(min(a[i - 1], a[i]) + 1, max(a[i - 1], a[i]), 1);
    while (m--) {
        int ty, x;
        cin >> ty >> x;
        if (ty == 1) {
            int y;
            cin >> y;
            --x;
            if (x) rt.modify(min(a[x - 1], a[x]) + 1, max(a[x - 1], a[x]), -1), rt.modify(min(a[x - 1], y) + 1, max(a[x - 1], y), 1);
            if (x < n - 1) rt.modify(min(a[x + 1], a[x]) + 1, max(a[x + 1], a[x]), -1), rt.modify(min(a[x + 1], y) + 1, max(a[x + 1], y), 1);
            a[x] = y;
        }
        else cout << rt.query(x) << '\n';
    }
}

Compilation message

game.cpp: In constructor 'seg::seg(int, int)':
game.cpp:21:45: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   21 |         if (l < r - 1) ch[0] = new seg(l, l + r >> 1), ch[1] = new seg(l + r >> 1, r);
      |                                           ~~^~~
game.cpp:21:74: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   21 |         if (l < r - 1) ch[0] = new seg(l, l + r >> 1), ch[1] = new seg(l + r >> 1, r);
      |                                                                        ~~^~~
game.cpp: In member function 'void seg::modify(int, int, int)':
game.cpp:30:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   30 |         if (_l < l + r >> 1) ch[0]->modify(_l, _r, _d);
      |                  ~~^~~
game.cpp:31:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   31 |         if (l + r >> 1 < _r) ch[1]->modify(_l, _r, _d);
      |             ~~^~~
game.cpp: In member function 'int seg::query(int)':
game.cpp:39:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   39 |         return ch[i >= l + r >> 1]->query(i);
      |                        ~~^~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 94148 KB Output is correct
2 Correct 103 ms 94236 KB Output is correct
3 Correct 104 ms 94132 KB Output is correct
4 Correct 109 ms 94340 KB Output is correct
5 Correct 102 ms 94148 KB Output is correct
6 Correct 103 ms 94136 KB Output is correct
7 Correct 100 ms 94148 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 94148 KB Output is correct
2 Correct 103 ms 94236 KB Output is correct
3 Correct 104 ms 94132 KB Output is correct
4 Correct 109 ms 94340 KB Output is correct
5 Correct 102 ms 94148 KB Output is correct
6 Correct 103 ms 94136 KB Output is correct
7 Correct 100 ms 94148 KB Output is correct
8 Correct 159 ms 95268 KB Output is correct
9 Correct 301 ms 95684 KB Output is correct
10 Correct 297 ms 95624 KB Output is correct
11 Correct 143 ms 95428 KB Output is correct
12 Correct 193 ms 95676 KB Output is correct
13 Correct 246 ms 95684 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 94148 KB Output is correct
2 Correct 103 ms 94236 KB Output is correct
3 Correct 104 ms 94132 KB Output is correct
4 Correct 109 ms 94340 KB Output is correct
5 Correct 102 ms 94148 KB Output is correct
6 Correct 103 ms 94136 KB Output is correct
7 Correct 100 ms 94148 KB Output is correct
8 Correct 159 ms 95268 KB Output is correct
9 Correct 301 ms 95684 KB Output is correct
10 Correct 297 ms 95624 KB Output is correct
11 Correct 143 ms 95428 KB Output is correct
12 Correct 193 ms 95676 KB Output is correct
13 Correct 246 ms 95684 KB Output is correct
14 Correct 460 ms 95336 KB Output is correct
15 Correct 467 ms 95428 KB Output is correct
16 Correct 467 ms 95428 KB Output is correct
17 Correct 472 ms 95404 KB Output is correct
18 Correct 475 ms 95428 KB Output is correct