Submission #1337751

#	Time	Username	Problem	Language	Result	Execution time	Memory
1337751		nguyengiabach1201	BOI Acronym (BOI25_boi)	C++20	0 / 100	1 ms	836 KiB

Main

// https://oj.uz/problem/view/BOI25_boi

#include <bits/stdc++.h>

using namespace std;

#define el '\n'
#define FNAME ""
#define ll long long
#define int long long
#define ld long double

const int MOD = 1e9 + 7;
const ll INF = 1e18 + 7;
const double EPS = 1e-9;

void setup()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    if (fopen(FNAME ".inp", "r"))
    {
        freopen(FNAME ".inp", "r", stdin);
        freopen(FNAME ".out", "w", stdout);
    }

    return;
}

const int N = 2e3 + 5;
int n, m[N][N];

void solve()
{
    cin >> n;

    for (int i = 1; i <= n; ++i)
        for (int j = i; j <= n; ++j)
            cin >> m[i][j];

    vector<int> prefB(n + 5);

    for (int i = 1; i <= n; ++i)
    {
        bool ok = true;
        prefB[i] = prefB[i - 1] + 1;

        for (int l = 1; l <= i; ++l)
            if (i - l + 1 - 2 * m[l][i] > prefB[i] - prefB[l - 1] || prefB[i] - prefB[l - 1] > m[l][i])
            {
                ok = false;
                break;
            }

        if (!ok)
            prefB[i] = prefB[i - 1];
    }

    // for (int i = 1; i <= n; ++i)
    //     cerr << prefB[i] << " ";
    // cerr << el;

    vector<int> ans;

    int cnt = 0;

    // for (int i = 1; i <= n; ++i)
    //     if (prefB[i] != prefB[i - 1])
    //         ans.push_back(i);

    for (int i = 1; i <= n; ++i)
        if (prefB[i] != prefB[i - 1] && cnt < m[1][n])
            ans.push_back(i), ++cnt;

    // sort(ans.begin(), ans.end());

    for (int i : ans)
        cout << i << " ";
    cout << el;

    return;
}

signed main()
{
    setup();

    int t = 1;
    bool multiTest = false;

    if (multiTest)
        cin >> t;

    while (t--)
        solve();

    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void setup()':
Main.cpp:24:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |         freopen(FNAME ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:25:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         freopen(FNAME ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 0
• Subtask 2: 0 / 11
• Subtask 3: 0 / 12
• Subtask 4: 0 / 10
• Subtask 5: 0 / 11
• Subtask 6: 0 / 19
• Subtask 7: 0 / 37