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Submission #957400

# Submission time Handle Problem Language Result Execution time Memory
957400 2024-04-03T16:17:40 Z vjudge1 Martian DNA (BOI18_dna) C++17
40 / 100
 796 ms 1048576 KB 
#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>

const ll N = 200069;
const ll mod = 1e9 + 7;

int tc;
ll n, k, r;

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    ll i, j;
    
    cin >> n >> k >> r;
    ll pref[n+1][k+1];
    memset(pref, 0, sizeof(pref));
    for(i = 1; i <= n; i++)
    {
        for(j = 0; j < k; j++) pref[i][j] = pref[i-1][j];
        ll x;
        cin >> x;
        ++pref[i][x];
    }

    ll need[k+1];
    memset(need, 0, sizeof(need));
    bool bisa = 1;
    ll sm = 0;
    for(i = 1; i <= r; i++)
    {
        ll x, y;
        cin >> x >> y;
        need[x] = y;
        sm += y;
        if(need[x] > pref[n][x])
        {
            bisa = 0;
        }
    }
    if(!bisa)
    {
        cout << "impossible" << '\n';
        return 0;
    }

    ll ans = n;
    for(i = sm; i <= n; i++)
    {
        ll cn = 0;
        for(j = 0; j < k; j++) cn += pref[i][j] >= need[j];
        if(cn == k)
        {
            ll l = 0, r = i;
            while(l <= r)
            {
                ll mid = (l + r)/2;
                ll res = 0;
                for(j = 0; j < k; j++) res += pref[i][j] - pref[mid][j] >= need[j];
                if(res == k)
                {
                    ans = min(ans, i - mid);
                    l = mid + 1;
                }
                else r = mid - 1;
            }
        }
    }
    cout << ans << '\n';
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 105 ms 78764 KB Output is correct
4 Correct 94 ms 125788 KB Output is correct
5 Correct 66 ms 50512 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 0 ms 360 KB Output is correct

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 18040 KB Output is correct
2 Correct 21 ms 5468 KB Output is correct
3 Correct 56 ms 19548 KB Output is correct
4 Correct 47 ms 19544 KB Output is correct
5 Runtime error 796 ms 1048576 KB Execution killed with signal 9
6 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Runtime error 499 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -