oj.uz

Submission #898697

# Submission time Handle Problem Language Result Execution time Memory
898697 2024-01-05T03:28:12 Z gaga999 Joker (BOI20_joker) C++17
41 / 100
 1531 ms 10324 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];
int *qs[B], sz[B], pp[B];

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]);
        sz[l[i] / B]++;
        // qs[l[i] / B].pb(i);
    }
    for (int i = 0; i * B <= n; i++)
        qs[i] = new int[sz[i]];
    for (int i = 0; i < q; i++)
        qs[l[i] / B][pp[l[i] / B]++] = i;
    init(ds, -1);
    for (int t = 0, cl = 0; cl <= m; t++, cl += B)
    {
        sort(qs[t], qs[t] + sz[t], [&](int a, int b)
             { return r[a] > r[b]; });
        bool ok = 0;
        for (int i = 1; i < cl; i++)
        {
            if (ok)
                break;
            if (f(u[i]) == f(v[i]))
                ok = 1;
            else
                add(i);
        }
        int cr = m;
        for (int kk = 0; kk < sz[t]; kk++)
        {
            int i = qs[t][kk];
            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(-1);
    }
    for (int i = 0; i < q; i++)
        puts(an[i] ? "YES" : "NO");
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4508 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4508 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct
29 Correct 5 ms 4444 KB Output is correct
30 Correct 3 ms 4628 KB Output is correct
31 Runtime error 4 ms 8796 KB Execution killed with signal 11
32 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 738 ms 9824 KB Output is correct
4 Correct 997 ms 9828 KB Output is correct
5 Correct 1045 ms 9824 KB Output is correct
6 Correct 721 ms 9816 KB Output is correct
7 Correct 719 ms 9828 KB Output is correct
8 Correct 1281 ms 10324 KB Output is correct
9 Correct 1285 ms 10076 KB Output is correct
10 Correct 907 ms 10080 KB Output is correct
11 Correct 862 ms 9824 KB Output is correct
12 Correct 708 ms 9828 KB Output is correct
13 Correct 1314 ms 9816 KB Output is correct
14 Correct 1291 ms 9816 KB Output is correct
15 Correct 1131 ms 9824 KB Output is correct
16 Correct 911 ms 9840 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4508 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct
29 Correct 738 ms 9824 KB Output is correct
30 Correct 997 ms 9828 KB Output is correct
31 Correct 1045 ms 9824 KB Output is correct
32 Correct 721 ms 9816 KB Output is correct
33 Correct 719 ms 9828 KB Output is correct
34 Correct 1281 ms 10324 KB Output is correct
35 Correct 1285 ms 10076 KB Output is correct
36 Correct 907 ms 10080 KB Output is correct
37 Correct 862 ms 9824 KB Output is correct
38 Correct 708 ms 9828 KB Output is correct
39 Correct 1314 ms 9816 KB Output is correct
40 Correct 1291 ms 9816 KB Output is correct
41 Correct 1131 ms 9824 KB Output is correct
42 Correct 911 ms 9840 KB Output is correct
43 Correct 798 ms 9924 KB Output is correct
44 Correct 1093 ms 9820 KB Output is correct
45 Correct 1077 ms 9820 KB Output is correct
46 Correct 852 ms 10068 KB Output is correct
47 Correct 810 ms 10072 KB Output is correct
48 Correct 1354 ms 10112 KB Output is correct
49 Correct 948 ms 10320 KB Output is correct
50 Correct 1102 ms 10068 KB Output is correct
51 Correct 1072 ms 10072 KB Output is correct
52 Correct 927 ms 10068 KB Output is correct
53 Correct 1531 ms 10068 KB Output is correct
54 Correct 1525 ms 9812 KB Output is correct
55 Correct 1410 ms 9824 KB Output is correct
56 Correct 1131 ms 9828 KB Output is correct

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4508 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct
29 Correct 5 ms 4444 KB Output is correct
30 Correct 3 ms 4628 KB Output is correct
31 Runtime error 4 ms 8796 KB Execution killed with signal 11
32 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4508 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4444 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4444 KB Output is correct
29 Correct 5 ms 4444 KB Output is correct
30 Correct 3 ms 4628 KB Output is correct
31 Runtime error 4 ms 8796 KB Execution killed with signal 11
32 Halted 0 ms 0 KB -