Submission #642923

#	Time	Username	Problem	Language	Result	Execution time	Memory
642923		n3rm1n	Restore Array (RMI19_restore)	C++17	7 / 100	125 ms	484 KiB

restore

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const int MAXN = 5005;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
int n, m;
int a[MAXN];
int dp0[MAXN][MAXN], dp1[MAXN][MAXN];
int p[MAXN];
int used[MAXN];
void check()
{
    memset(p, 0, sizeof(p));
    /*for (int i = 1; i <= n; ++ i)
        cout << used[i] << " ";
    cout << endl;*/
    for (int i = 1; i <= n; ++ i)
    {
        p[i] = p[i-1] + used[i];
    }
    int ones, zeros;
    for (int i = 1; i <= n; ++ i)
    {
        for (int j = i; j <= n; ++ j)
        {
            ones = p[j] - p[i-1];
            zeros = j - i + 1 - ones;

            if(ones < dp1[i][j] || zeros < dp0[i][j])
            {

                return;
            }
        }
    }
    for (int i = 1; i <= n; ++ i)
        cout << used[i] << " ";
    cout << endl;
    exit(0);
}
void gen(int pos)
{
    if(pos > n)
    {
        check();
        return;
    }
    used[pos] = 0;
    gen(pos+1);
    used[pos] = 1;
    gen(pos+1);
}
void solve()
{
    int l, r, k, val;
    for (int i = 1; i <= m; ++ i)
    {
        cin >> l >> r >> k >> val;
        l ++;
        r ++;
        if(val == 0)dp0[l][r] = max(dp0[l][r], k);
        else dp1[l][r] = max(dp1[l][r], r - l + 1 - k + 1);
       // cout << r - l + 1 - k + 1 << endl;
    }

    gen(1);
    cout << -1 << endl;
}

vector < pair < int, int > > v;
void read13()
{
    int l, r, k, val;
    for (int i = 1; i <= m; ++ i)
    {
        cin >> l >> r >> k >> val;
        if(k == 1 && val == 1)
        {
            for (int j = l; j <= r; ++ j)
                a[j] = 1;
        }
        else if(k == 1 && val == 0)
        {
            v.push_back(make_pair(l, r));
        }
    }
    for (int i = 1; i <= n; ++ i)
    {
        p[i] = p[i-1] + a[i];
    }
    bool ok = true;
    for (int i = 0; i < v.size() && false; ++ i)
    {
        int l = v[i].first, r = v[i].second;
        if(p[r] - p[l-1] == r - l + 1)ok = false;
    }
    if(!ok)cout << -1 << endl;
    else
    {
        for (int i = 1; i <= n; ++ i)
            cout << a[i] << " ";
        cout << endl;
    }
}

int main()
{
    speed();
    cin >> n >> m;
    if(n <= 18)solve();
    else
    {
        read13();
    }
    return 0;
}

Compilation message (stderr)

restore.cpp: In function 'void read13()':
restore.cpp:97:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   97 |     for (int i = 0; i < v.size() && false; ++ i)
      |                     ~~^~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 0 / 13
• Subtask 3: 0 / 25
• Subtask 4: 0 / 55