oj.uz

Submission #879504

# Submission time Handle Problem Language Result Execution time Memory
879504 2023-11-27T15:04:22 Z sleepntsheep Simple game (IZhO17_game) C++17
100 / 100
 42 ms 6944 KB 
#include <iostream>
#include <fstream>
#include <iomanip>
#include <cmath>
#include <cassert>
#include <cstring>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>
#include <complex>

using i64 = long long;
using u64 = unsigned long long;
using f64 = double;
using f80 = long double;

using namespace std;
using pt = complex<f80>;
#define ALL(x) x.begin(), x.end()
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);
#define N 100000

int n, m, h[100000], t[1000001];

void upd(int p, int k) { for (; p < sizeof t / sizeof *t; p+=p&-p) t[p]+=k; }
int qry(int p) { int z{0}; for(; p;p-=p&-p)z+=t[p];return z; }

void cal(int i, int k)
{
    if (h[i] > h[i-1]) upd(h[i-1]+1, k), upd(h[i]+1, -k);
    else if (h[i] < h[i-1]) upd(h[i]+1, k), upd(h[i-1]+1, -k);
}

int main()
{
    ShinLena;
    cin >> n >> m >> h[0];
    for (int i = 1; i < n; ++i) cin >> h[i], cal(i, 1);

    for (int t, x, y; m--;)
    {
        cin >> t >> x;
        if (t == 1)
        {
            --x; cin >> y;
            if (x) cal(x, -1);
            if (x + 1 < n) cal(x+1, -1);
            h[x] = y;
            if (x) cal(x, 1);
            if (x + 1 < n) cal(x+1, 1);
        }
        else
        {
            cout << qry(x) << '\n';
        }
    }

    return 0;
}

Compilation message

game.cpp: In function 'void upd(int, int)':
game.cpp:28:35: warning: comparison of integer expressions of different signedness: 'int' and 'long unsigned int' [-Wsign-compare]
   28 | void upd(int p, int k) { for (; p < sizeof t / sizeof *t; p+=p&-p) t[p]+=k; }
      |                                 ~~^~~~~~~~~~~~~~~~~~~~~~

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 4572 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 4572 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 25 ms 5460 KB Output is correct
9 Correct 30 ms 6772 KB Output is correct
10 Correct 34 ms 6884 KB Output is correct
11 Correct 21 ms 5456 KB Output is correct
12 Correct 28 ms 6492 KB Output is correct
13 Correct 28 ms 6480 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 4572 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 25 ms 5460 KB Output is correct
9 Correct 30 ms 6772 KB Output is correct
10 Correct 34 ms 6884 KB Output is correct
11 Correct 21 ms 5456 KB Output is correct
12 Correct 28 ms 6492 KB Output is correct
13 Correct 28 ms 6480 KB Output is correct
14 Correct 42 ms 6740 KB Output is correct
15 Correct 41 ms 6944 KB Output is correct
16 Correct 42 ms 6740 KB Output is correct
17 Correct 42 ms 6740 KB Output is correct
18 Correct 41 ms 6740 KB Output is correct