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답안 #217261

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
217261 2020-03-29T10:29:19 Z dolphingarlic Growing Trees (BOI11_grow) C++14
100 / 100
 127 ms 3448 KB 
#include <bits/stdc++.h>
#define FOR(i, x, y) for (int i = x; i < y; i++)
using namespace std;

int n, q, bit[100001], a[100001];

void update(int l, int r, int val) {
    for (; l <= n; l += (l & (-l))) bit[l] += val;
    for (r++; r <= n; r += (r & (-r))) bit[r] -= val;
}
int query(int pos) {
    int ans = 0;
    for (; pos; pos -= (pos & (-pos))) ans += bit[pos];
    return ans;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> n >> q;
    FOR(i, 1, n + 1) cin >> a[i];
    sort(a + 1, a + n + 1);
    FOR(i, 1, n + 1) update(i, i, a[i]);

    while (q--) {
        char c;
        int a, b;
        cin >> c >> a >> b;
        if (c == 'F') {
            int l1 = 1, r1 = n;
            while (l1 != r1) {
                int mid = (l1 + r1) / 2;
                if (query(mid) < b) l1 = mid + 1;
                else r1 = mid;
            }
            if (query(l1) < b) continue;
            if (n - l1 < a) {
                update(l1, n, 1);
                continue;
            }

            int l2 = l1 - 1, r2 = l1 + a - 1, mx = query(r2);
            while (l2 != r2) {
                int mid = (l2 + r2 + 1) / 2;
                if (query(mid) == mx) r2 = mid - 1;
                else l2 = mid;
            }
            int l3 = 1, r3 = n;
            while (l3 != r3) {
                int mid = (l3 + r3 + 1) / 2;
                if (query(mid) > mx) r3 = mid - 1;
                else l3 = mid;
            }

            update(l1, l2, 1);
            a -= l2 - l1 + 1;
            update(l3 - a + 1, l3, 1);
        } else {
            if (a > query(n) || b < query(1)) {
                cout << "0\n";
                continue;
            }

            int l1 = 1, r1 = n, l2 = 1, r2 = n;
            while (l1 != r1) {
                int mid = (l1 + r1) / 2;
                if (query(mid) < a) l1 = mid + 1;
                else r1 = mid;
            }
            while (l2 != r2) {
                int mid = (l2 + r2 + 1) / 2;
                if (query(mid) > b) r2 = mid - 1;
                else l2 = mid;
            }

            cout << l2 - l1 + 1 << '\n';
        }
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 2424 KB Output is correct
2 Correct 121 ms 2860 KB Output is correct
3 Correct 51 ms 2680 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 6 ms 384 KB Output is correct
3 Correct 7 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 57 ms 1400 KB Output is correct
6 Correct 71 ms 1656 KB Output is correct
7 Correct 8 ms 512 KB Output is correct
8 Correct 27 ms 1152 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 72 ms 1660 KB Output is correct
2 Correct 69 ms 1912 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 35 ms 1408 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 2040 KB Output is correct
2 Correct 76 ms 1784 KB Output is correct
3 Correct 11 ms 512 KB Output is correct
4 Correct 67 ms 1784 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 81 ms 2040 KB Output is correct
2 Correct 104 ms 2296 KB Output is correct
3 Correct 23 ms 896 KB Output is correct
4 Correct 47 ms 2296 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 95 ms 2040 KB Output is correct
2 Correct 109 ms 2424 KB Output is correct
3 Correct 52 ms 2556 KB Output is correct
4 Correct 23 ms 896 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 2168 KB Output is correct
2 Correct 78 ms 2424 KB Output is correct
3 Correct 55 ms 2684 KB Output is correct
4 Correct 23 ms 896 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 127 ms 2940 KB Output is correct
2 Correct 104 ms 2296 KB Output is correct
3 Correct 37 ms 1912 KB Output is correct
4 Correct 56 ms 2280 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 101 ms 2552 KB Output is correct
2 Correct 120 ms 2808 KB Output is correct
3 Correct 123 ms 2936 KB Output is correct

Subtask #10
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 121 ms 3448 KB Output is correct