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Submission #894452

# Submission time Handle Problem Language Result Execution time Memory
894452 2023-12-28T09:49:52 Z vjudge1 Index (COCI21_index) C++17
60 / 110
 2500 ms 13380 KB 
#include <bits/stdc++.h>
using namespace std;

#define speed ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define rall(x) x.rbegin(), x.rend()
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define nl '\n'
#define int long long

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef long double ld;

const int N = 2e5 + 5;
const int M = 1e3 + 5;
const int inf = 1e9 + 123;
const ll infl = 1e15 + 10;
const int mod = 1e9 + 7;
const int P = 31;

int n, q, MX, a[N], t[N], ans[N];

struct query{
    int l, r, id;
};

vector <query> qs;

int sum (int r) {
    int res = 0;
    for (; r > 0; r -= r & -r)
        res += t[r];
    return res;
}

int sum (int l, int r) {
    return sum(r) - sum(l-1);
}

void add (int k, int x) {
    for (; k <= n; k += k & -k)
        t[k] += x;
}

void add(int x){
    add(x, 1);
}

void del(int x){
    add(x, -1);
}

void solve() {
    cin >> n >> q;
    for(int i = 1; i <= n; i++)
        cin >> a[i];
    for(int i = 1; i <= q; i++){
        int l, r;
        cin >> l >> r;
        qs.pb({l, r, i});
        MX = max(MX, r);
    }
    sort(all(qs), [](query a, query b){
        return a.r < b.r;
    });

    int l = 1, r = 0;
    for(auto Q : qs){
        while (r < Q.r)
            add(a[++r]);
        while (l < Q.l)
            del(a[l++]);
        while (l > Q.l)
            add(a[--l]);
        int l = 1, r = n + 1, mid;
        while(r - l > 1){
            mid = (l + r) >> 1;
            if(sum(mid, MX) >= mid)
                l = mid; 
            else
                r = mid;
        }
        ans[Q.id] = l;
    }
    for(int i = 1; i <= q; i++)
        cout << ans[i] << nl;
}

signed main() { 
    speed;
    int T = 1;
    // cin >> T;
    while (T--)
        solve();
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1286 ms 6340 KB Output is correct
12 Correct 1262 ms 6852 KB Output is correct
13 Correct 1298 ms 7072 KB Output is correct
14 Correct 1275 ms 7056 KB Output is correct
15 Correct 1260 ms 7064 KB Output is correct
16 Correct 1271 ms 7068 KB Output is correct
17 Correct 1253 ms 7056 KB Output is correct
18 Correct 1288 ms 7064 KB Output is correct
19 Correct 1253 ms 7060 KB Output is correct
20 Correct 1251 ms 7060 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1286 ms 6340 KB Output is correct
12 Correct 1262 ms 6852 KB Output is correct
13 Correct 1298 ms 7072 KB Output is correct
14 Correct 1275 ms 7056 KB Output is correct
15 Correct 1260 ms 7064 KB Output is correct
16 Correct 1271 ms 7068 KB Output is correct
17 Correct 1253 ms 7056 KB Output is correct
18 Correct 1288 ms 7064 KB Output is correct
19 Correct 1253 ms 7060 KB Output is correct
20 Correct 1251 ms 7060 KB Output is correct
21 Execution timed out 2543 ms 13380 KB Time limit exceeded
22 Halted 0 ms 0 KB -