oj.uz

Submission #526214

# Submission time Handle Problem Language Result Execution time Memory
526214 2022-02-14T00:51:53 Z Lam_lai_cuoc_doi Trampoline (info1cup20_trampoline) C++17
100 / 100
 408 ms 52508 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;

template <class T>
void read(T &x)
{
    x = 0;
    register int c;
    while ((c = getchar()) && (c > '9' || c < '0'))
        ;
    for (; c >= '0' && c <= '9'; c = getchar())
        x = x * 10 + c - '0';
}

constexpr bool typetest = 0;
constexpr int N = 2e5 + 5;
int n, r, c, q;
int ranks[N], par[N][18];

pair<int, int> a[N];
vector<int> adj[N];

void Read()
{
    cin >> r >> c >> n;

    for (int i = 1; i <= n; ++i)
        cin >> a[i].first >> a[i].second;
    cin >> q;
}

void dfs(int v)
{
    for (int i = 1; i < 18; ++i)
        par[v][i] = par[par[v][i - 1]][i - 1];

    for (int i : adj[v])
        if (i != par[v][0])
        {
            par[i][0] = v;
            ranks[i] = ranks[v] + 1;
            dfs(i);
        }
}

void Solve()
{
    sort(a + 1, a + n + 1);

    for (int i = 1; i <= n; ++i)
    {
        int j = lower_bound(a + 1, a + n + 1, make_pair(a[i].first + 1, a[i].second)) - a;
        if (j > n || a[j].first != a[i].first + 1)
            adj[0].emplace_back(i);
        else
            adj[j].emplace_back(i);
    }

    dfs(0);

    while (q--)
    {
        pair<int, int> start, goal;

        cin >> start.first >> start.second >> goal.first >> goal.second;

        if (start.first > goal.first || start.second > goal.second)
        {
            cout << "No\n";
            continue;
        }

        if (start.first == goal.first)
        {
            cout << "Yes\n";
            continue;
        }

        int j = lower_bound(a + 1, a + n + 1, start) - a;

        if (j > n || a[j].first != start.first || ranks[j] < goal.first - start.first)
        {
            cout << "No\n";
            continue;
        }

        int u = ranks[j] - (goal.first - start.first) + 1, v = j;

        for (int i = 17; ~i; --i)
            if (ranks[par[v][i]] >= u)
                v = par[v][i];

        if (a[v].second > goal.second)
            cout << "No\n";
        else
            cout << "Yes\n";
    }
}

int32_t main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen("tests.inp", "r"))
    {
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }
    int t(1);
    if (typetest)
        cin >> t;
    for (int _ = 1; _ <= t; ++_)
    {
        // cout << "Case " << _ << ": ";
        Read();
        Solve();
    }
    cerr << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
}

/*
 */

Compilation message

trampoline.cpp: In function 'void read(T&)':
trampoline.cpp:12:18: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   12 |     register int c;
      |                  ^
trampoline.cpp: In function 'int32_t main()':
trampoline.cpp:111:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  111 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
trampoline.cpp:112:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  112 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5956 KB 200 token(s): yes count is 21, no count is 179
2 Correct 6 ms 6092 KB 200 token(s): yes count is 70, no count is 130
3 Correct 6 ms 5688 KB 197 token(s): yes count is 25, no count is 172

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 26532 KB 4000 token(s): yes count is 99, no count is 3901
2 Correct 101 ms 26528 KB 4000 token(s): yes count is 91, no count is 3909
3 Correct 98 ms 28320 KB 4000 token(s): yes count is 4000, no count is 0
4 Correct 97 ms 26648 KB 4000 token(s): yes count is 1991, no count is 2009

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 228 ms 35240 KB 200000 token(s): yes count is 110486, no count is 89514
2 Correct 228 ms 36872 KB 200000 token(s): yes count is 114664, no count is 85336
3 Correct 249 ms 36956 KB 200000 token(s): yes count is 86232, no count is 113768
4 Correct 268 ms 37820 KB 200000 token(s): yes count is 94603, no count is 105397
5 Correct 300 ms 37820 KB 200000 token(s): yes count is 94148, no count is 105852
6 Correct 275 ms 41332 KB 200000 token(s): yes count is 97163, no count is 102837

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 5836 KB 5000 token(s): yes count is 3238, no count is 1762
2 Correct 9 ms 5824 KB 5000 token(s): yes count is 3837, no count is 1163
3 Correct 9 ms 5800 KB 5000 token(s): yes count is 4104, no count is 896
4 Correct 8 ms 5836 KB 5000 token(s): yes count is 3934, no count is 1066
5 Correct 9 ms 5936 KB 5000 token(s): yes count is 3384, no count is 1616
6 Correct 7 ms 5708 KB 5000 token(s): yes count is 3390, no count is 1610

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 337 ms 43132 KB 200000 token(s): yes count is 171404, no count is 28596
2 Correct 324 ms 39056 KB 200000 token(s): yes count is 161254, no count is 38746
3 Correct 295 ms 37140 KB 200000 token(s): yes count is 117455, no count is 82545
4 Correct 362 ms 52508 KB 200000 token(s): yes count is 182118, no count is 17882
5 Correct 278 ms 41688 KB 200000 token(s): yes count is 167565, no count is 32435
6 Correct 273 ms 36984 KB 200000 token(s): yes count is 156797, no count is 43203
7 Correct 277 ms 37072 KB 200000 token(s): yes count is 156797, no count is 43203
8 Correct 237 ms 37148 KB 200000 token(s): yes count is 122100, no count is 77900
9 Correct 360 ms 41400 KB 200000 token(s): yes count is 139670, no count is 60330
10 Correct 347 ms 42128 KB 200000 token(s): yes count is 165806, no count is 34194
11 Correct 408 ms 46784 KB 200000 token(s): yes count is 175646, no count is 24354
12 Correct 211 ms 35048 KB 200000 token(s): yes count is 134695, no count is 65305
13 Correct 232 ms 35252 KB 200000 token(s): yes count is 126733, no count is 73267
14 Correct 275 ms 37928 KB 200000 token(s): yes count is 155290, no count is 44710
15 Correct 233 ms 37168 KB 200000 token(s): yes count is 129674, no count is 70326