oj.uz

Submission #243606

# Submission time Handle Problem Language Result Execution time Memory
243606 2020-07-01T11:58:21 Z SamAnd RMQ (NOI17_rmq) C++17
100 / 100
 109 ms 10936 KB 
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define fi first
#define se second
typedef long long ll;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
mt19937 rnf(2106);
const int N = 100005;

int n, q;
pair<int, int> u[N];

int t[N * 4];

void ubd(int tl, int tr, int l, int r, int y, int pos)
{
    if (l > r)
        return;
    if (tl == l && tr == r)
    {
        t[pos] = max(t[pos], y);
        return;
    }
    int m = (tl + tr) / 2;
    ubd(tl, m, l, min(m, r), y, pos * 2);
    ubd(m + 1, tr, max(m + 1, l), r, y, pos * 2 + 1);
}

int qry(int tl, int tr, int x, int pos)
{
    if (tl == tr)
        return t[pos];
    int m = (tl + tr) / 2;
    if (x <= m)
        return max(qry(tl, m, x, pos * 2), t[pos]);
    return max(qry(m + 1, tr, x, pos * 2 + 1), t[pos]);
}

pair<int, int> hat(const pair<int, int>& a, const pair<int, int>& b)
{
    return m_p(max(a.fi, b.fi), min(a.se, b.se));
}

vector<int> v[N];

int ans[N];

void solv()
{
    scanf("%d%d", &n, &q);
    for (int i = 0; i < n; ++i)
        u[i] = m_p(0, n - 1);
    for (int i = 0; i < q; ++i)
    {
        int l, r, y;
        scanf("%d%d%d", &l, &r, &y);
        ubd(0, n - 1, l, r, y, 1);
        u[y] = hat(u[y], m_p(l, r));
    }
    for (int i = 0; i < n; ++i)
    {
        if (u[i].fi > u[i].se)
        {
            for (int i = 0; i < n; ++i)
                printf("-1 ");
            printf("\n");
            return;
        }
        v[u[i].fi].push_back((i + 1));
        v[u[i].se + 1].push_back(-(i + 1));
    }
    set<int> s;
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < v[i].size(); ++j)
        {
            if (v[i][j] > 0)
                s.insert(v[i][j] - 1);
            else
            {
                if (s.find(-v[i][j] - 1) != s.end())
                {
                    for (int i = 0; i < n; ++i)
                        printf("-1 ");
                    printf("\n");
                    return;
                }
            }
        }
        auto it = s.lower_bound(qry(0, n - 1, i, 1));
        if (it == s.end())
        {
            for (int i = 0; i < n; ++i)
                printf("-1 ");
            printf("\n");
            return;
        }
        ans[i] = *it;
        s.erase(it);
    }
    for (int i = 0; i < n; ++i)
        printf("%d ", ans[i]);
    printf("\n");
}

int main()
{
    #ifdef SOMETHING
    freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    #endif // SOMETHING
    //ios_base::sync_with_stdio(false), cin.tie(0);
    solv();
    return 0;
}

//while ((double)clock() / CLOCKS_PER_SEC <= 0.9){}

Compilation message

rmq.cpp: In function 'void solv()':
rmq.cpp:78:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = 0; j < v[i].size(); ++j)
                         ~~^~~~~~~~~~~~~
rmq.cpp:53:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &q);
     ~~~~~^~~~~~~~~~~~~~~~
rmq.cpp:59:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d", &l, &r, &y);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Correct 6 ms 2688 KB Output is correct
3 Correct 6 ms 2688 KB Output is correct
4 Correct 6 ms 2688 KB Output is correct
5 Correct 6 ms 2688 KB Output is correct
6 Correct 6 ms 2688 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 6 ms 2688 KB Output is correct
9 Correct 6 ms 2688 KB Output is correct
10 Correct 6 ms 2688 KB Output is correct
11 Correct 6 ms 2664 KB Output is correct

Subtask #2
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Correct 6 ms 2688 KB Output is correct
3 Correct 6 ms 2688 KB Output is correct
4 Correct 6 ms 2688 KB Output is correct
5 Correct 6 ms 2688 KB Output is correct
6 Correct 6 ms 2688 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 6 ms 2688 KB Output is correct
9 Correct 6 ms 2688 KB Output is correct
10 Correct 6 ms 2688 KB Output is correct
11 Correct 6 ms 2664 KB Output is correct
12 Correct 6 ms 2688 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 7 ms 2816 KB Output is correct
17 Correct 7 ms 2816 KB Output is correct
18 Correct 7 ms 2816 KB Output is correct
19 Correct 6 ms 2688 KB Output is correct
20 Correct 7 ms 2816 KB Output is correct
21 Correct 7 ms 2688 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Correct 6 ms 2944 KB Output is correct
24 Correct 6 ms 2688 KB Output is correct
25 Correct 6 ms 2688 KB Output is correct
26 Correct 6 ms 2688 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 2688 KB Output is correct
2 Correct 6 ms 2688 KB Output is correct
3 Correct 6 ms 2688 KB Output is correct
4 Correct 6 ms 2688 KB Output is correct
5 Correct 6 ms 2688 KB Output is correct
6 Correct 6 ms 2688 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 6 ms 2688 KB Output is correct
9 Correct 6 ms 2688 KB Output is correct
10 Correct 6 ms 2688 KB Output is correct
11 Correct 6 ms 2664 KB Output is correct
12 Correct 6 ms 2688 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 7 ms 2816 KB Output is correct
17 Correct 7 ms 2816 KB Output is correct
18 Correct 7 ms 2816 KB Output is correct
19 Correct 6 ms 2688 KB Output is correct
20 Correct 7 ms 2816 KB Output is correct
21 Correct 7 ms 2688 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Correct 6 ms 2944 KB Output is correct
24 Correct 6 ms 2688 KB Output is correct
25 Correct 6 ms 2688 KB Output is correct
26 Correct 6 ms 2688 KB Output is correct
27 Correct 106 ms 10016 KB Output is correct
28 Correct 96 ms 10528 KB Output is correct
29 Correct 86 ms 10180 KB Output is correct
30 Correct 109 ms 10936 KB Output is correct
31 Correct 82 ms 8692 KB Output is correct
32 Correct 91 ms 8692 KB Output is correct
33 Correct 42 ms 8728 KB Output is correct
34 Correct 34 ms 7204 KB Output is correct
35 Correct 58 ms 10604 KB Output is correct
36 Correct 47 ms 5624 KB Output is correct
37 Correct 65 ms 6008 KB Output is correct
38 Correct 28 ms 7276 KB Output is correct
39 Correct 58 ms 5624 KB Output is correct
40 Correct 6 ms 2688 KB Output is correct
41 Correct 6 ms 2688 KB Output is correct