oj.uz

Submission #1090554

# Submission time Handle Problem Language Result Execution time Memory
1090554 2024-09-18T12:45:17 Z gyg Martian DNA (BOI18_dna) C++17
40 / 100
 2000 ms 13960 KB 
#pragma GCC optimize("Ofast", "unroll-loops")
#pragma GCC target("avx2")
#include <bits/stdc++.h>
using namespace std;
#define arr array
#define pii pair<int, int>
const int MX_N = 2e5 + 5;

int n;
arr<int, MX_N> vl, rq;

arr<int, MX_N> scr;
set<pii> ord;
void upd(int i, int x) {
    ord.erase({scr[i], i});
    scr[i] += x;
    ord.insert({scr[i], i});
}
bool chck(int sz) {
    for (int i = 1; i <= n; i++) scr[i] = -rq[i];
    ord.clear();
    for (int i = 1; i <= sz; i++) scr[vl[i]]++;
    for (int i = 1; i <= n; i++) ord.insert({scr[i], i});
    if (ord.begin()->first >= 0) return true;
    
    for (int i = sz + 1; i <= n; i++) {
        upd(vl[i], 1), upd(vl[i - sz], -1);
        if (ord.begin()->first >= 0) return true;
    }
    return false;
}

int bn_srch() {
    int lw = 1, hgh = n;
    while (lw != hgh) {
        // cout << lw << " " << hgh << endl;
        int md = (lw + hgh) / 2;
        if (chck(md)) hgh = md;
        else lw = md + 1;
    }
    return ((chck(lw)) ? lw : -1);
}

int main() {
    // freopen("mrt.in", "r", stdin);
    cin.sync_with_stdio(false), cin.tie(0);
    int tmp1, tmp2; cin >> n >> tmp1 >> tmp2;
    for (int i = 1; i <= n; i++) { cin >> vl[i]; vl[i]++; }
    for (int i = 1; i <= tmp2; i++) { int x; cin >> x; cin >> rq[x + 1]; }

    if (!chck(n)) { cout << "impossible" << endl; exit(0); }

    int ans = bn_srch();
    cout << ans << endl;
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 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 6 ms 604 KB Output is correct
2 Correct 6 ms 604 KB Output is correct
3 Correct 10 ms 604 KB Output is correct
4 Correct 20 ms 704 KB Output is correct
5 Correct 14 ms 600 KB Output is correct
6 Correct 12 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1010 ms 11380 KB Output is correct
2 Correct 1096 ms 11396 KB Output is correct
3 Correct 890 ms 11400 KB Output is correct
4 Correct 1085 ms 11400 KB Output is correct
5 Execution timed out 2032 ms 11352 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1118 ms 11548 KB Output is correct
2 Correct 1608 ms 11604 KB Output is correct
3 Correct 1559 ms 12924 KB Output is correct
4 Correct 517 ms 11792 KB Output is correct
5 Correct 55 ms 13904 KB Output is correct
6 Execution timed out 2084 ms 13960 KB Time limit exceeded
7 Halted 0 ms 0 KB -