oj.uz

Submission #937476

# Submission time Handle Problem Language Result Execution time Memory
937476 2024-03-04T06:37:16 Z gaga999 Palindromi (COCI22_palindromi) C++17
110 / 110
 238 ms 175540 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 = 1e5 + 5;

struct TR
{
    vector<int> len, kp, bk[2], to[2];
    deque<int> dq;
    int cnt, ln, rn, sz;
    TR() : cnt(2), sz(0)
    {
        len = {-1, 0}, ln = rn = 1; // 0
        kp = bk[0] = bk[1] = to[0] = to[1] = {0, 0};
    }
    inline void add(int u, int vl)
    {
        len.pb(len[u] + 2);
        to[0].pb(0), to[1].pb(0);
        kp.pb(u ? to[vl][bk[vl][u]] : 1);
        to[vl][u] = cnt++;
    }
    void addr(int vl)
    {
        dq.pb(vl);
        int u;
        if (len[rn] < sz && dq[sz - len[rn] - 1] == vl)
            u = rn;
        else
            u = bk[vl][rn];
        if (!to[vl][u])
        {
            add(u, vl);
            int tp = dq[sz - len[kp.back()]];
            bk[tp].pb(kp.back());
            bk[tp ^ 1].pb(bk[tp ^ 1][kp.back()]);
        }
        rn = to[vl][u];
        if (len[rn] == ++sz)
            ln = rn;
    }
    void addl(int vl)
    {
        int u;
        if (len[ln] < sz && dq[len[ln]] == vl)
            u = ln;
        else
            u = bk[vl][ln];
        dq.push_front(vl);
        if (!to[vl][u])
        {
            add(u, vl);
            int tp = dq[len[kp.back()]];
            bk[tp].pb(kp.back());
            bk[tp ^ 1].pb(bk[tp ^ 1][kp.back()]);
        }
        ln = to[vl][u];
        if (len[ln] == ++sz)
            rn = ln;
    }
} tr[N];

char s[N];
int ds[N];

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

signed main()
{
    int n, x, y;
    scanf("%d%s", &n, s + 1);
    iota(ds + 1, ds + n + 1, 1);
    for (int i = 1; i <= n; i++)
        tr[i].addl(s[i] - '0');
    for (int i = 1; i < n; i++)
    {
        scanf("%d%d", &x, &y);
        x = f(x), y = f(y);
        if (tr[x].sz > tr[y].sz)
        {
            for (int p = 0; p < tr[y].sz; p++)
                tr[x].addr(tr[y].dq[p]);
            printf("%d\n", tr[ds[y] = x].cnt - 2);
        }
        else
        {
            for (int p = tr[x].sz - 1; p >= 0; p--)
                tr[y].addl(tr[x].dq[p]);
            printf("%d\n", tr[ds[x] = y].cnt - 2);
        }
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:182:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  182 |     scanf("%d%s", &n, s + 1);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:188:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  188 |         scanf("%d%d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 102480 KB Output is correct
2 Correct 82 ms 102484 KB Output is correct
3 Correct 87 ms 102548 KB Output is correct
4 Correct 82 ms 102484 KB Output is correct
5 Correct 60 ms 102556 KB Output is correct
6 Correct 80 ms 102552 KB Output is correct
7 Correct 64 ms 102484 KB Output is correct
8 Correct 81 ms 102484 KB Output is correct
9 Correct 60 ms 102480 KB Output is correct
10 Correct 95 ms 102544 KB Output is correct
11 Correct 60 ms 102492 KB Output is correct
12 Correct 60 ms 102564 KB Output is correct
13 Correct 61 ms 102556 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 102480 KB Output is correct
2 Correct 82 ms 102484 KB Output is correct
3 Correct 87 ms 102548 KB Output is correct
4 Correct 82 ms 102484 KB Output is correct
5 Correct 60 ms 102556 KB Output is correct
6 Correct 80 ms 102552 KB Output is correct
7 Correct 64 ms 102484 KB Output is correct
8 Correct 81 ms 102484 KB Output is correct
9 Correct 60 ms 102480 KB Output is correct
10 Correct 95 ms 102544 KB Output is correct
11 Correct 60 ms 102492 KB Output is correct
12 Correct 60 ms 102564 KB Output is correct
13 Correct 61 ms 102556 KB Output is correct
14 Correct 61 ms 102464 KB Output is correct
15 Correct 84 ms 102992 KB Output is correct
16 Correct 81 ms 102992 KB Output is correct
17 Correct 82 ms 102996 KB Output is correct
18 Correct 89 ms 103176 KB Output is correct
19 Correct 84 ms 103016 KB Output is correct
20 Correct 94 ms 103224 KB Output is correct
21 Correct 84 ms 102904 KB Output is correct
22 Correct 83 ms 102988 KB Output is correct
23 Correct 83 ms 103016 KB Output is correct
24 Correct 89 ms 103060 KB Output is correct
25 Correct 81 ms 102996 KB Output is correct
26 Correct 83 ms 102992 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 153 ms 152860 KB Output is correct
2 Correct 157 ms 154672 KB Output is correct
3 Correct 152 ms 152148 KB Output is correct
4 Correct 150 ms 155124 KB Output is correct
5 Correct 164 ms 155136 KB Output is correct
6 Correct 161 ms 153656 KB Output is correct
7 Correct 156 ms 154704 KB Output is correct
8 Correct 150 ms 152632 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 102480 KB Output is correct
2 Correct 82 ms 102484 KB Output is correct
3 Correct 87 ms 102548 KB Output is correct
4 Correct 82 ms 102484 KB Output is correct
5 Correct 60 ms 102556 KB Output is correct
6 Correct 80 ms 102552 KB Output is correct
7 Correct 64 ms 102484 KB Output is correct
8 Correct 81 ms 102484 KB Output is correct
9 Correct 60 ms 102480 KB Output is correct
10 Correct 95 ms 102544 KB Output is correct
11 Correct 60 ms 102492 KB Output is correct
12 Correct 60 ms 102564 KB Output is correct
13 Correct 61 ms 102556 KB Output is correct
14 Correct 61 ms 102464 KB Output is correct
15 Correct 84 ms 102992 KB Output is correct
16 Correct 81 ms 102992 KB Output is correct
17 Correct 82 ms 102996 KB Output is correct
18 Correct 89 ms 103176 KB Output is correct
19 Correct 84 ms 103016 KB Output is correct
20 Correct 94 ms 103224 KB Output is correct
21 Correct 84 ms 102904 KB Output is correct
22 Correct 83 ms 102988 KB Output is correct
23 Correct 83 ms 103016 KB Output is correct
24 Correct 89 ms 103060 KB Output is correct
25 Correct 81 ms 102996 KB Output is correct
26 Correct 83 ms 102992 KB Output is correct
27 Correct 153 ms 152860 KB Output is correct
28 Correct 157 ms 154672 KB Output is correct
29 Correct 152 ms 152148 KB Output is correct
30 Correct 150 ms 155124 KB Output is correct
31 Correct 164 ms 155136 KB Output is correct
32 Correct 161 ms 153656 KB Output is correct
33 Correct 156 ms 154704 KB Output is correct
34 Correct 150 ms 152632 KB Output is correct
35 Correct 60 ms 102496 KB Output is correct
36 Correct 207 ms 159764 KB Output is correct
37 Correct 238 ms 155984 KB Output is correct
38 Correct 214 ms 160736 KB Output is correct
39 Correct 218 ms 159284 KB Output is correct
40 Correct 175 ms 153388 KB Output is correct
41 Correct 183 ms 154684 KB Output is correct
42 Correct 145 ms 152644 KB Output is correct
43 Correct 158 ms 154452 KB Output is correct
44 Correct 150 ms 152224 KB Output is correct
45 Correct 155 ms 153936 KB Output is correct
46 Correct 205 ms 175540 KB Output is correct
47 Correct 200 ms 161872 KB Output is correct