oj.uz

Submission #894598

# Submission time Handle Problem Language Result Execution time Memory
894598 2023-12-28T14:11:34 Z lunaTu Xylophone (JOI18_xylophone) C++17
0 / 100
 0 ms 344 KB 
#include <bits/stdc++.h>
#define ff first
#define ss second
#define all(x) x.begin(), x.end()
#include "xylophone.h"
typedef long long ll;
using namespace std;

const int M = 5e3 + 1;
int a[M];
pair<int, int> g[M];

void solve2(int n) {
    map<int, int> d;
    d[0] = 1;
    d[a[2]] = 2;

    for (int i = 3; i <= n; i++) {
        int x = g[i].ff, y = g[i].ss;

        int r = abs(a[i - 2] - a[i - 1]);

        if (a[i - 2] < a[i - 1]) {
            if (x != r  && x != y) a[i] = a[i - 2] + x;
            else a[i] = a[i - 1] - y;
        }
        else {
            if (x != r && x != y) a[i] = a[i - 2] - x;
            else a[i] = a[i - 1] + y;
        }

        if (d[a[i]]) return;

        d[a[i]] = i;
    }

    if ((*d.begin()).ss > (*d.rbegin()).ss) return;

    int i = 1;
    for (auto [x, y] : d) {
        answer(y, i);
        i++;
    }
    exit(0);
}

void solve(int N) {
    for (int i = 3; i <= N; i++) {
        g[i].ff = query(i - 2, i);
        g[i].ss = query(i - 1, i);
    }

    a[1] = 0;

    a[2] = query(1, 2);
    solve2(N);

    a[2] *= -1;
    solve2(N);
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #2
0 / 36.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -

Subtask #3
0 / 53.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Unexpected end of file - int32 expected
2 Halted 0 ms 0 KB -