oj.uz

답안 #898737

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
898737 2024-01-05T05:14:10 Z gaga999 Joker (BOI20_joker) C++17
41 / 100
 265 ms 14892 KB 
#include <cstdio>
#include <stdio.h>
#include <iostream>
#include <math.h>
#include <vector>
#include <queue>
#include <stack>
#include <deque>
#include <algorithm>
#include <utility>
#include <set>
#include <map>
#include <stdlib.h>
#include <cstring>
#include <string.h>
#include <string>
#include <sstream>
#include <assert.h>
#include <climits>
#include <sstream>
#include <numeric>
#include <time.h>
#include <limits.h>
#include <list>
#include <bitset>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <iomanip>
#include <complex>
#include <chrono>
#include <fstream>
#include <functional>
#include <unistd.h>
// #pragma GCC optimize("Ofast,no-stack-protector")
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx,avx2,bmi,bmi2,lzcnt,popcnt")
#define lowbit(x) ((x) & -(x))
#define ml(a, b) ((1ll * (a) * (b)) % M)
#define tml(a, b) (a) = ((1ll * (a) * (b)) % M)
#define ad(a, b) ((0ll + (a) + (b)) % M)
#define tad(a, b) (a) = ((0ll + (a) + (b)) % M)
#define mi(a, b) ((0ll + M + (a) - (b)) % M)
#define tmi(a, b) (a) = ((0ll + M + (a) - (b)) % M)
#define tmin(a, b) (a) = min((a), (b))
#define tmax(a, b) (a) = max((a), (b))
#define iter(a) (a).begin(), (a).end()
#define riter(a) (a).rbegin(), (a).rend()
#define init(a, b) memset((a), (b), sizeof(a))
#define cpy(a, b) memcpy((a), (b), sizeof(a))
#define uni(a) a.resize(unique(iter(a)) - a.begin())
#define pb emplace_back
#define mpr make_pair
#define ls(i) ((i) << 1)
#define rs(i) ((i) << 1 | 1)
#define INF 0x3f3f3f3f
#define NIF 0xc0c0c0c0
#define eps 1e-9
#define F first
#define S second
#define AC cin.tie(0)->sync_with_stdio(0)
using namespace std;
typedef long long llt;
typedef pair<int, int> pii;
typedef pair<double, double> pdd;
typedef pair<llt, llt> pll;
typedef complex<double> cd;
// const int M = 998244353;

// random_device rm;
// mt19937 rg(rm());
// default_random_engine rg(rm());
// uniform_int_distribution<int> rd(INT_MIN, INT_MAX);
// uniform_real_distribution<double> rd(0, M_PI);

void db() { cerr << "\n"; }
template <class T, class... U>
void db(T a, U... b) { cerr << a << " ", db(b...); }

inline char gc()
{
    const static int SZ = 1 << 16;
    static char buf[SZ], *p1, *p2;
    if (p1 == p2 && (p2 = buf + fread(p1 = buf, 1, SZ, stdin), p1 == p2))
        return -1;
    return *p1++;
}
void rd() {}
template <typename T, typename... U>
void rd(T &x, U &...y)
{
    x = 0;
    bool f = 0;
    char c = gc();
    while (!isdigit(c))
        f ^= !(c ^ 45), c = gc();
    while (isdigit(c))
        x = (x << 1) + (x << 3) + (c ^ 48), c = gc();
    f && (x = -x), rd(y...);
}

template <typename T>
void prt(T x)
{
    if (x < 0)
        putchar('-'), x = -x;
    if (x > 9)
        prt(x / 10);
    putchar((x % 10) ^ 48);
}

const int N = 2e5 + 5, B = 450;
int u[N], v[N], l[N], r[N], ds[N << 1], ln = -1, n;
bool an[N];
pii rm[N << 1];
vector<int> qs[N];

int f(int x)
{
    return ds[x] < 0 ? x : f(ds[x]);
}

inline void mg(int i, int j)
{
    i = f(i), j = f(j);
    if (i != j)
    {
        if (ds[i] > ds[j])
            swap(i, j);
        rm[++ln] = mpr(j, ds[j]);
        ds[i] += ds[j], ds[j] = i;
    }
}

inline void undo(int p)
{
    while (ln > p)
        ds[ds[rm[ln].F]] -= rm[ln].S, ds[rm[ln].F] = rm[ln].S, ln--;
}

inline void add(int i)
{
    mg(u[i], v[i] + n), mg(v[i], u[i] + n);
}

signed main()
{
    int m, q;
    rd(n, m, q);
    for (int i = 1; i <= m; i++)
        rd(u[i], v[i]);
    for (int i = 0; i < q; i++)
    {
        rd(l[i], r[i]);
        qs[l[i] / B].pb(i);
    }
    init(ds, -1);
    for (int t = 0, cl = 0; cl <= m; t++, cl += B)
    {
        // if (qs[t].empty())
        //     continue;
        sort(iter(qs[t]), [&](int a, int b)
             { return r[a] > r[b]; });
        bool ok = 0;
        for (int i = max(1, cl - B); i < cl; i++)
        {
            if (ok)
                break;
            if (f(u[i]) == f(v[i]))
                ok = 1;
            else
                add(i);
        }
        int pr = ln, cr = m;
        for (int i : qs[t])
        {
            if (ok)
                an[i] = 1;
            else
            {
                while (cr > r[i])
                {
                    if (f(u[cr]) == f(v[cr]))
                        ok = 1;
                    else
                        add(cr--);
                    if (ok)
                        break;
                }
                if (ok)
                    an[i] = 1;
                else
                {
                    int pl = ln;
                    for (int j = max(1, cl); j < l[i]; j++)
                    {
                        if (f(v[j]) == f(u[j]))
                        {
                            an[i] = 1;
                            break;
                        }
                        add(j);
                    }
                    undo(pl);
                }
            }
        }
        undo(pr);
    }
    for (int i = 0; i < q; i++)
        puts(an[i] ? "YES" : "NO");
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 3 ms 12892 KB Output is correct
4 Correct 2 ms 12888 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12892 KB Output is correct
9 Correct 2 ms 13144 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 3 ms 13148 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12700 KB Output is correct
16 Correct 2 ms 12888 KB Output is correct
17 Correct 2 ms 12892 KB Output is correct
18 Correct 2 ms 12888 KB Output is correct
19 Correct 2 ms 12892 KB Output is correct
20 Correct 2 ms 12892 KB Output is correct
21 Correct 3 ms 12888 KB Output is correct
22 Correct 2 ms 12892 KB Output is correct
23 Correct 2 ms 12888 KB Output is correct
24 Correct 2 ms 12908 KB Output is correct
25 Correct 2 ms 12892 KB Output is correct
26 Correct 2 ms 12892 KB Output is correct
27 Correct 2 ms 12892 KB Output is correct
28 Correct 2 ms 12892 KB Output is correct

Subtask #2
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 3 ms 12892 KB Output is correct
4 Correct 2 ms 12888 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12892 KB Output is correct
9 Correct 2 ms 13144 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 3 ms 13148 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12700 KB Output is correct
16 Correct 2 ms 12888 KB Output is correct
17 Correct 2 ms 12892 KB Output is correct
18 Correct 2 ms 12888 KB Output is correct
19 Correct 2 ms 12892 KB Output is correct
20 Correct 2 ms 12892 KB Output is correct
21 Correct 3 ms 12888 KB Output is correct
22 Correct 2 ms 12892 KB Output is correct
23 Correct 2 ms 12888 KB Output is correct
24 Correct 2 ms 12908 KB Output is correct
25 Correct 2 ms 12892 KB Output is correct
26 Correct 2 ms 12892 KB Output is correct
27 Correct 2 ms 12892 KB Output is correct
28 Correct 2 ms 12892 KB Output is correct
29 Correct 7 ms 12892 KB Output is correct
30 Correct 5 ms 12892 KB Output is correct
31 Correct 4 ms 12888 KB Output is correct
32 Correct 4 ms 12892 KB Output is correct
33 Correct 3 ms 12892 KB Output is correct
34 Incorrect 4 ms 12892 KB Output isn't correct
35 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 27 ms 14536 KB Output is correct
4 Correct 33 ms 14596 KB Output is correct
5 Correct 27 ms 14544 KB Output is correct
6 Correct 36 ms 14652 KB Output is correct
7 Correct 31 ms 14628 KB Output is correct
8 Correct 32 ms 14892 KB Output is correct
9 Correct 30 ms 14800 KB Output is correct
10 Correct 29 ms 14648 KB Output is correct
11 Correct 34 ms 14532 KB Output is correct
12 Correct 29 ms 14532 KB Output is correct
13 Correct 33 ms 14544 KB Output is correct
14 Correct 32 ms 14540 KB Output is correct
15 Correct 31 ms 14816 KB Output is correct
16 Correct 30 ms 14532 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 3 ms 12892 KB Output is correct
4 Correct 2 ms 12888 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12892 KB Output is correct
9 Correct 2 ms 13144 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 3 ms 13148 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12700 KB Output is correct
16 Correct 2 ms 12888 KB Output is correct
17 Correct 2 ms 12892 KB Output is correct
18 Correct 2 ms 12888 KB Output is correct
19 Correct 2 ms 12892 KB Output is correct
20 Correct 2 ms 12892 KB Output is correct
21 Correct 3 ms 12888 KB Output is correct
22 Correct 2 ms 12892 KB Output is correct
23 Correct 2 ms 12888 KB Output is correct
24 Correct 2 ms 12908 KB Output is correct
25 Correct 2 ms 12892 KB Output is correct
26 Correct 2 ms 12892 KB Output is correct
27 Correct 2 ms 12892 KB Output is correct
28 Correct 2 ms 12892 KB Output is correct
29 Correct 27 ms 14536 KB Output is correct
30 Correct 33 ms 14596 KB Output is correct
31 Correct 27 ms 14544 KB Output is correct
32 Correct 36 ms 14652 KB Output is correct
33 Correct 31 ms 14628 KB Output is correct
34 Correct 32 ms 14892 KB Output is correct
35 Correct 30 ms 14800 KB Output is correct
36 Correct 29 ms 14648 KB Output is correct
37 Correct 34 ms 14532 KB Output is correct
38 Correct 29 ms 14532 KB Output is correct
39 Correct 33 ms 14544 KB Output is correct
40 Correct 32 ms 14540 KB Output is correct
41 Correct 31 ms 14816 KB Output is correct
42 Correct 30 ms 14532 KB Output is correct
43 Correct 175 ms 14700 KB Output is correct
44 Correct 198 ms 14648 KB Output is correct
45 Correct 183 ms 14536 KB Output is correct
46 Correct 153 ms 14636 KB Output is correct
47 Correct 150 ms 14532 KB Output is correct
48 Correct 50 ms 14792 KB Output is correct
49 Correct 61 ms 14788 KB Output is correct
50 Correct 251 ms 14784 KB Output is correct
51 Correct 230 ms 14648 KB Output is correct
52 Correct 198 ms 14640 KB Output is correct
53 Correct 249 ms 14636 KB Output is correct
54 Correct 265 ms 14528 KB Output is correct
55 Correct 253 ms 14644 KB Output is correct
56 Correct 238 ms 14536 KB Output is correct

Subtask #5
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 3 ms 12892 KB Output is correct
4 Correct 2 ms 12888 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12892 KB Output is correct
9 Correct 2 ms 13144 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 3 ms 13148 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12700 KB Output is correct
16 Correct 2 ms 12888 KB Output is correct
17 Correct 2 ms 12892 KB Output is correct
18 Correct 2 ms 12888 KB Output is correct
19 Correct 2 ms 12892 KB Output is correct
20 Correct 2 ms 12892 KB Output is correct
21 Correct 3 ms 12888 KB Output is correct
22 Correct 2 ms 12892 KB Output is correct
23 Correct 2 ms 12888 KB Output is correct
24 Correct 2 ms 12908 KB Output is correct
25 Correct 2 ms 12892 KB Output is correct
26 Correct 2 ms 12892 KB Output is correct
27 Correct 2 ms 12892 KB Output is correct
28 Correct 2 ms 12892 KB Output is correct
29 Correct 7 ms 12892 KB Output is correct
30 Correct 5 ms 12892 KB Output is correct
31 Correct 4 ms 12888 KB Output is correct
32 Correct 4 ms 12892 KB Output is correct
33 Correct 3 ms 12892 KB Output is correct
34 Incorrect 4 ms 12892 KB Output isn't correct
35 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 12888 KB Output is correct
2 Correct 2 ms 12892 KB Output is correct
3 Correct 3 ms 12892 KB Output is correct
4 Correct 2 ms 12888 KB Output is correct
5 Correct 2 ms 12892 KB Output is correct
6 Correct 2 ms 12892 KB Output is correct
7 Correct 2 ms 12892 KB Output is correct
8 Correct 2 ms 12892 KB Output is correct
9 Correct 2 ms 13144 KB Output is correct
10 Correct 2 ms 12892 KB Output is correct
11 Correct 2 ms 12892 KB Output is correct
12 Correct 2 ms 12892 KB Output is correct
13 Correct 3 ms 13148 KB Output is correct
14 Correct 2 ms 12892 KB Output is correct
15 Correct 2 ms 12700 KB Output is correct
16 Correct 2 ms 12888 KB Output is correct
17 Correct 2 ms 12892 KB Output is correct
18 Correct 2 ms 12888 KB Output is correct
19 Correct 2 ms 12892 KB Output is correct
20 Correct 2 ms 12892 KB Output is correct
21 Correct 3 ms 12888 KB Output is correct
22 Correct 2 ms 12892 KB Output is correct
23 Correct 2 ms 12888 KB Output is correct
24 Correct 2 ms 12908 KB Output is correct
25 Correct 2 ms 12892 KB Output is correct
26 Correct 2 ms 12892 KB Output is correct
27 Correct 2 ms 12892 KB Output is correct
28 Correct 2 ms 12892 KB Output is correct
29 Correct 7 ms 12892 KB Output is correct
30 Correct 5 ms 12892 KB Output is correct
31 Correct 4 ms 12888 KB Output is correct
32 Correct 4 ms 12892 KB Output is correct
33 Correct 3 ms 12892 KB Output is correct
34 Incorrect 4 ms 12892 KB Output isn't correct
35 Halted 0 ms 0 KB -