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답안 #894602

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
894602 2023-12-28T14:16:07 Z vjudge1 Index (COCI21_index) C++17
110 / 110
 841 ms 14628 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
//using namespace __gnu_pbds;

#define speed ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define russian setlocale(LC_ALL,"Russian_Russia.20866");
#define file freopen("condense2.in", "r", stdin), freopen("condense2.out", "w", stdout);
#define ll long long
#define ull unsigned long long
#define ld long double
#define pll pair<ll, ll>
#define pii pair<int, int>
#define pli pair<ll, int>
#define all(s) s.begin(), s.end()
#define pb push_back
#define ins insert
#define mp make_pair
#define sz(x) x.size()
#define F first
#define S second
#define lb lower_bound
#define ub upper_bound
#define mem(x) memset(x, 0, sizeof(x))

const ll N = 200010;
const ll M = 1e9 + 7;
const ll block = 316;
const ll mod = 1e9 + 7;
const ll P = 263;
const ld pi = acos(-1);
const ll inf = 9e18;

ll add(ll a, ll b) {
    if(a + b < 0) return a + b + mod;
    if(a + b >= mod) return a + b - mod;
    return a + b;
}

ll sub(ll a, ll b) {
    return (a - b + mod) % mod;
}

ll mul(ll a, ll b) {
    return a * b % mod;
}

ll binpow(ll a, ll n) {
    ll res = 1;
    while(n) {
        if(n & 1) res = mul(res, a);
        a = mul(a, a);
        n >>= 1;
    }
    return res;
}

ll inv(ll x) {
    return binpow(x, mod - 2);
}
struct ask {
    ll l, r, pos;
};
ask Q[N];
bool cmp(ask a, ask b) {
    if(a.l / block == b.l / block) return (a.r < b.r);
    return (a.l < b.l);
}
ll n, q;
ll p[N], t[N], ans[N];
void upd(ll k, ll x) {
    for(ll i = k; i <= n; i += (i & (-i))) {
        t[i] += x;
    }
}
ll sum(ll k) {
    ll res = 0LL;
    for(ll i = k; i >= 1; i -= (i & (-i))) {
        res += t[i];
    }
    return res;
}
ll cnt(ll l, ll r) {
    return sum(r) - sum(l - 1);
}
void solve() {
    cin >> n >> q;
    ll mx = 0;
    for(ll i = 1; i <= n; i++) {
        cin >> p[i];
        mx = max(mx, p[i]);
    }
    for(ll i = 1; i <= q; i++) {
        cin >> Q[i].l >> Q[i].r;
        Q[i].pos = i;
    }
    sort(Q + 1, Q + q + 1, cmp);
    ll l = 1, r = 0;
    for(ll i = 1; i <= q; i++) {
        while(r < Q[i].r) r++, upd(p[r], 1);
        while(l < Q[i].l) upd(p[l], -1), l++;
        while(l > Q[i].l) l--, upd(p[l], 1);
        while(r > Q[i].r) upd(p[r], -1), r--;
        ll lo = 1, hi = n + 1;
        while(hi > lo + 1) {
            ll mid = (lo + hi) / 2;
            if(cnt(mid, mx) >= mid) lo = mid;
            else hi = mid;
        }
        ans[Q[i].pos] = lo;
    }
    for(ll i = 1; i <= q; i++) cout << ans[i] << '\n';
}
signed main() {
    speed;
    //file;
    int test = 1;
    //cin >> test;
    while(test--) {
        solve();
    }
}

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6620 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6488 KB Output is correct

Subtask #2
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6620 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6488 KB Output is correct
11 Correct 103 ms 7672 KB Output is correct
12 Correct 103 ms 7764 KB Output is correct
13 Correct 108 ms 7836 KB Output is correct
14 Correct 97 ms 7760 KB Output is correct
15 Correct 100 ms 7768 KB Output is correct
16 Correct 101 ms 7888 KB Output is correct
17 Correct 99 ms 7840 KB Output is correct
18 Correct 103 ms 7836 KB Output is correct
19 Correct 108 ms 7836 KB Output is correct
20 Correct 99 ms 7760 KB Output is correct

Subtask #3
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6620 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6488 KB Output is correct
11 Correct 103 ms 7672 KB Output is correct
12 Correct 103 ms 7764 KB Output is correct
13 Correct 108 ms 7836 KB Output is correct
14 Correct 97 ms 7760 KB Output is correct
15 Correct 100 ms 7768 KB Output is correct
16 Correct 101 ms 7888 KB Output is correct
17 Correct 99 ms 7840 KB Output is correct
18 Correct 103 ms 7836 KB Output is correct
19 Correct 108 ms 7836 KB Output is correct
20 Correct 99 ms 7760 KB Output is correct
21 Correct 737 ms 14284 KB Output is correct
22 Correct 812 ms 14292 KB Output is correct
23 Correct 825 ms 14540 KB Output is correct
24 Correct 771 ms 14540 KB Output is correct
25 Correct 828 ms 14628 KB Output is correct
26 Correct 793 ms 14540 KB Output is correct
27 Correct 822 ms 14544 KB Output is correct
28 Correct 838 ms 14548 KB Output is correct
29 Correct 841 ms 14544 KB Output is correct
30 Correct 735 ms 14540 KB Output is correct