oj.uz

답안 #947389

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
947389 2024-03-16T05:26:34 Z gaga999 Hard route (IZhO17_road) C++17
52 / 100
 452 ms 98092 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 size(x) (int)x.size()
#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 = 5e5 + 5;
vector<int> eg[N];
struct A
{
    llt mx, nm;
    A() : mx(0), nm(1) {}
    void operator+=(const A &rh)
    {
        if (rh.mx == mx)
            nm += rh.nm;
        else if (rh.mx > mx)
            *this = rh;
    }
} dp[N], ans;

void dfs(int u, int fa)
{
    for (int v : eg[u])
    {
        if (v == fa)
            continue;
        dfs(v, u);
        dp[u] += dp[v];
    }
    dp[u].mx++;
}

void slv(int u, int fa)
{
    A mx, sc;
    sc.mx = -INF;
    llt v0, v1, v2;
    v0 = v1 = v2 = -INF;
    for (int v : eg[u])
    {
        if (dp[v].mx == mx.mx)
            mx.nm += dp[v].nm;
        else
        {
            if (dp[v].mx > mx.mx)
                sc += mx, mx = dp[v];
            else
                sc += dp[v];
        }
        tmax(v2, dp[v].mx);
        if (v2 > v1)
            swap(v1, v2);
        if (v1 > v0)
            swap(v1, v0);
    }
    A cr;
    cr.mx = v0 * (v1 + v2);
    if (cr.mx >= ans.mx)
    {
        cr.nm = 0;
        if (v1 == v2)
        {
            int num = 0;
            for (int v : eg[u])
                if (dp[v].mx == v1)
                    num += dp[v].nm, cr.nm -= (dp[v].nm - 1) * dp[v].nm;
            cr.nm += (num - 1) * num, cr.nm >>= 1;
        }
        else
        {
            int n1 = 0, n2 = 0;
            for (int v : eg[u])
            {
                if (dp[v].mx == v1)
                    n1 += dp[v].nm;
                else if (dp[v].mx == v2)
                    n2 += dp[v].nm;
            }
            cr.nm += 1ll * n1 * n2;
        }
        ans += cr;
    }
    A pr = dp[u];
    for (int v : eg[u])
    {
        if (v == fa)
            continue;
        if (dp[v].mx == mx.mx)
        {
            if (dp[v].nm == mx.nm)
                dp[u] = sc;
            else
                dp[u] = mx, dp[u].nm -= dp[v].nm;
        }
        else
            dp[u] = mx;
        dp[u].mx++;
        slv(v, u);
    }
    dp[u] = pr;
}

signed main()
{
    int n, x, y;
    rd(n);
    for (int i = 1; i < n; i++)
    {
        rd(x, y);
        eg[x].pb(y);
        eg[y].pb(x);
    }
    dfs(1, -1), slv(1, -1);
    prt(ans.mx), putchar(' ');
    prt(ans.nm), putchar('\n');
}

Subtask #1
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19800 KB Output is correct
2 Correct 5 ms 19804 KB Output is correct
3 Correct 5 ms 19804 KB Output is correct
4 Correct 4 ms 19804 KB Output is correct
5 Correct 5 ms 19800 KB Output is correct
6 Correct 4 ms 19804 KB Output is correct
7 Correct 4 ms 19804 KB Output is correct
8 Correct 4 ms 19804 KB Output is correct
9 Correct 4 ms 19904 KB Output is correct
10 Correct 4 ms 19804 KB Output is correct
11 Correct 5 ms 19804 KB Output is correct
12 Correct 5 ms 19996 KB Output is correct
13 Correct 6 ms 19804 KB Output is correct
14 Correct 5 ms 19804 KB Output is correct
15 Correct 5 ms 19804 KB Output is correct
16 Correct 4 ms 19804 KB Output is correct
17 Correct 5 ms 19804 KB Output is correct
18 Correct 4 ms 19804 KB Output is correct
19 Correct 4 ms 19892 KB Output is correct
20 Correct 4 ms 19800 KB Output is correct
21 Correct 4 ms 19804 KB Output is correct
22 Correct 4 ms 19804 KB Output is correct
23 Correct 4 ms 19852 KB Output is correct
24 Correct 6 ms 19900 KB Output is correct

Subtask #2
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19800 KB Output is correct
2 Correct 5 ms 19804 KB Output is correct
3 Correct 5 ms 19804 KB Output is correct
4 Correct 4 ms 19804 KB Output is correct
5 Correct 5 ms 19800 KB Output is correct
6 Correct 4 ms 19804 KB Output is correct
7 Correct 4 ms 19804 KB Output is correct
8 Correct 4 ms 19804 KB Output is correct
9 Correct 4 ms 19904 KB Output is correct
10 Correct 4 ms 19804 KB Output is correct
11 Correct 5 ms 19804 KB Output is correct
12 Correct 5 ms 19996 KB Output is correct
13 Correct 6 ms 19804 KB Output is correct
14 Correct 5 ms 19804 KB Output is correct
15 Correct 5 ms 19804 KB Output is correct
16 Correct 4 ms 19804 KB Output is correct
17 Correct 5 ms 19804 KB Output is correct
18 Correct 4 ms 19804 KB Output is correct
19 Correct 4 ms 19892 KB Output is correct
20 Correct 4 ms 19800 KB Output is correct
21 Correct 4 ms 19804 KB Output is correct
22 Correct 4 ms 19804 KB Output is correct
23 Correct 4 ms 19852 KB Output is correct
24 Correct 6 ms 19900 KB Output is correct
25 Correct 6 ms 20312 KB Output is correct
26 Correct 5 ms 20316 KB Output is correct
27 Correct 6 ms 20316 KB Output is correct
28 Correct 5 ms 20316 KB Output is correct
29 Correct 6 ms 20316 KB Output is correct
30 Correct 5 ms 20316 KB Output is correct
31 Correct 5 ms 20316 KB Output is correct
32 Correct 5 ms 20568 KB Output is correct
33 Correct 5 ms 20316 KB Output is correct
34 Correct 5 ms 20416 KB Output is correct
35 Correct 5 ms 20316 KB Output is correct
36 Correct 6 ms 20252 KB Output is correct
37 Correct 6 ms 20568 KB Output is correct
38 Correct 6 ms 20672 KB Output is correct
39 Correct 5 ms 20316 KB Output is correct
40 Correct 5 ms 20316 KB Output is correct
41 Correct 5 ms 20060 KB Output is correct
42 Correct 5 ms 20152 KB Output is correct
43 Correct 5 ms 20060 KB Output is correct
44 Correct 5 ms 20060 KB Output is correct
45 Correct 6 ms 20060 KB Output is correct
46 Correct 5 ms 20060 KB Output is correct
47 Correct 5 ms 20160 KB Output is correct
48 Correct 5 ms 20060 KB Output is correct

Subtask #3
0 / 48.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 19800 KB Output is correct
2 Correct 5 ms 19804 KB Output is correct
3 Correct 5 ms 19804 KB Output is correct
4 Correct 4 ms 19804 KB Output is correct
5 Correct 5 ms 19800 KB Output is correct
6 Correct 4 ms 19804 KB Output is correct
7 Correct 4 ms 19804 KB Output is correct
8 Correct 4 ms 19804 KB Output is correct
9 Correct 4 ms 19904 KB Output is correct
10 Correct 4 ms 19804 KB Output is correct
11 Correct 5 ms 19804 KB Output is correct
12 Correct 5 ms 19996 KB Output is correct
13 Correct 6 ms 19804 KB Output is correct
14 Correct 5 ms 19804 KB Output is correct
15 Correct 5 ms 19804 KB Output is correct
16 Correct 4 ms 19804 KB Output is correct
17 Correct 5 ms 19804 KB Output is correct
18 Correct 4 ms 19804 KB Output is correct
19 Correct 4 ms 19892 KB Output is correct
20 Correct 4 ms 19800 KB Output is correct
21 Correct 4 ms 19804 KB Output is correct
22 Correct 4 ms 19804 KB Output is correct
23 Correct 4 ms 19852 KB Output is correct
24 Correct 6 ms 19900 KB Output is correct
25 Correct 6 ms 20312 KB Output is correct
26 Correct 5 ms 20316 KB Output is correct
27 Correct 6 ms 20316 KB Output is correct
28 Correct 5 ms 20316 KB Output is correct
29 Correct 6 ms 20316 KB Output is correct
30 Correct 5 ms 20316 KB Output is correct
31 Correct 5 ms 20316 KB Output is correct
32 Correct 5 ms 20568 KB Output is correct
33 Correct 5 ms 20316 KB Output is correct
34 Correct 5 ms 20416 KB Output is correct
35 Correct 5 ms 20316 KB Output is correct
36 Correct 6 ms 20252 KB Output is correct
37 Correct 6 ms 20568 KB Output is correct
38 Correct 6 ms 20672 KB Output is correct
39 Correct 5 ms 20316 KB Output is correct
40 Correct 5 ms 20316 KB Output is correct
41 Correct 5 ms 20060 KB Output is correct
42 Correct 5 ms 20152 KB Output is correct
43 Correct 5 ms 20060 KB Output is correct
44 Correct 5 ms 20060 KB Output is correct
45 Correct 6 ms 20060 KB Output is correct
46 Correct 5 ms 20060 KB Output is correct
47 Correct 5 ms 20160 KB Output is correct
48 Correct 5 ms 20060 KB Output is correct
49 Correct 236 ms 58964 KB Output is correct
50 Correct 233 ms 63440 KB Output is correct
51 Correct 261 ms 67248 KB Output is correct
52 Correct 262 ms 54016 KB Output is correct
53 Correct 204 ms 60956 KB Output is correct
54 Correct 194 ms 65108 KB Output is correct
55 Correct 186 ms 54916 KB Output is correct
56 Correct 205 ms 59476 KB Output is correct
57 Correct 241 ms 69712 KB Output is correct
58 Correct 223 ms 64848 KB Output is correct
59 Correct 224 ms 64856 KB Output is correct
60 Correct 259 ms 62544 KB Output is correct
61 Correct 452 ms 98092 KB Output is correct
62 Correct 405 ms 86612 KB Output is correct
63 Correct 424 ms 53796 KB Output is correct
64 Correct 389 ms 45796 KB Output is correct
65 Correct 385 ms 40788 KB Output is correct
66 Correct 394 ms 38104 KB Output is correct
67 Correct 403 ms 36660 KB Output is correct
68 Correct 367 ms 35864 KB Output is correct
69 Correct 426 ms 35920 KB Output is correct
70 Correct 362 ms 35584 KB Output is correct
71 Correct 388 ms 35540 KB Output is correct
72 Correct 355 ms 35748 KB Output is correct
73 Correct 421 ms 35664 KB Output is correct
74 Correct 357 ms 35792 KB Output is correct
75 Incorrect 339 ms 35700 KB Output isn't correct
76 Halted 0 ms 0 KB -