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답안 #45459

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
45459 2018-04-14T07:31:15 Z choikiwon Long Mansion (JOI17_long_mansion) C++17
25 / 100
 3000 ms 240472 KB 
#include<bits/stdc++.h>
using namespace std;

const int MN = 500010;

int N, Q;
int C[MN];
vector<int> A[MN], B[MN];
int L[MN], R[MN], X[MN], Y[MN];

struct BIT {
    vector<int> tree;
    void init() {
        tree = vector<int>(4 * N, -1e9);
    }
    void upd(int idx, int val, int l, int r, int n) {
        if(idx < l || r < idx) return;
        if(l == r) {
            tree[n] = val;
            return;
        }
        int m = (l + r)>>1;
        upd(idx, val, l, m, 2*n);
        upd(idx, val, m + 1, r, 2*n + 1);
        tree[n] = max(tree[2*n], tree[2*n + 1]);
    }
    int quer(int a, int b, int l, int r, int n) {
        if(b < l || r < a) return -1e9;
        if(a <= l && r <= b) return tree[n];
        int m = (l + r)>>1;
        int L = quer(a, b, l, m, 2*n);
        int R = quer(a, b, m + 1, r, 2*n + 1);
        return max(L, R);
    }
} bit1, bit2, bit3, bit4;

int main() {
    scanf("%d", &N);

    for(int i = 0; i < N - 1; i++) {
        scanf("%d", &C[i]);
        C[i]--;
    }

    for(int i = 0; i < N; i++) {
        int k; scanf("%d", &k);
        A[i].resize(k);
        for(int j = 0; j < k; j++) {
            scanf("%d", &A[i][j]);
            A[i][j]--;
        }
    }

    for(int i = 0; i < N; i++) {
        for(int j = 0; j < A[i].size(); j++) {
            B[ A[i][j] ].push_back(i);
        }
    }
    for(int i = 0; i < N - 1; i++) {
        int s = 0, e = (int)B[ C[i] ].size() - 1, p = -1;
        while(s <= e) {
            int m = (s + e)>>1;

            if(B[ C[i] ][m] <= i) {
                p = B[ C[i] ][m];
                s = m + 1;
            }
            else e = m - 1;
        }
        L[i] = p;
    }
    for(int i = N - 1; i >= 1; i--) {
        int s = 0, e = (int)B[ C[i - 1] ].size() - 1, p = N;
        while(s <= e) {
            int m = (s + e)>>1;

            if(B[ C[i - 1] ][m] >= i) {
                p = B[ C[i - 1] ][m];
                e = m - 1;
            }
            else s = m + 1;
        }
        R[i] = p;
    }
    L[N - 1] = -1;
    R[0] = N;

    bit1.init();
    bit2.init();
    for(int i = 0; i < N; i++) {
        bit1.upd(i, R[i], 0, N - 1, 1);
        bit2.upd(i, -L[i], 0, N - 1, 1);
    }
    for(int i = 0; i < N - 1; i++) {
        int s = L[i] + 1, e = i, p = N;
        while(s <= e) {
            int m = (s + e)>>1;

            if(bit1.quer(L[i] + 1, m, 0, N - 1, 1) > i) {
                p = m;
                e = m - 1;
            }
            else s = m + 1;
        }
        X[i] = p;
    }
    for(int i = N - 1; i >= 1; i--) {
        int s = i, e = R[i] - 1, p = -1;
        while(s <= e) {
            int m = (s + e)>>1;

            if(-bit2.quer(m, R[i] - 1, 0, N - 1, 1) < i) {
                p = m;
                s = m + 1;
            }
            else e = m - 1;
        }
        Y[i] = p;
    }

    bit3.init();
    bit4.init();
    for(int i = 0; i < N; i++) {
        bit3.upd(i, -X[i], 0, N - 1, 1);
        bit4.upd(i, Y[i], 0, N - 1, 1);
    }

    scanf("%d", &Q);

    for(int i = 0; i < Q; i++) {
        int x, y; scanf("%d %d", &x, &y);
        x--; y--;

        if(x < y) {
            if(-bit3.quer(x, y - 1, 0, N - 1, 1) <= x) printf("NO\n");
            else printf("YES\n");
        }
        else {
            if(bit4.quer(y + 1, x, 0, N - 1, 1) >= x) printf("NO\n");
            else printf("YES\n");
        }
    }
}

Compilation message

long_mansion.cpp: In function 'int main()':
long_mansion.cpp:55:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0; j < A[i].size(); j++) {
                        ~~^~~~~~~~~~~~~
long_mansion.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
long_mansion.cpp:41:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &C[i]);
         ~~~~~^~~~~~~~~~~~~
long_mansion.cpp:46:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int k; scanf("%d", &k);
                ~~~~~^~~~~~~~~~
long_mansion.cpp:49:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &A[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~
long_mansion.cpp:128:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &Q);
     ~~~~~^~~~~~~~~~
long_mansion.cpp:131:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int x, y; scanf("%d %d", &x, &y);
                   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 24184 KB Output is correct
2 Correct 29 ms 24372 KB Output is correct
3 Correct 30 ms 24840 KB Output is correct
4 Correct 26 ms 24840 KB Output is correct
5 Correct 26 ms 24840 KB Output is correct
6 Correct 27 ms 24840 KB Output is correct
7 Correct 34 ms 25032 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 24184 KB Output is correct
2 Correct 29 ms 24372 KB Output is correct
3 Correct 30 ms 24840 KB Output is correct
4 Correct 26 ms 24840 KB Output is correct
5 Correct 26 ms 24840 KB Output is correct
6 Correct 27 ms 24840 KB Output is correct
7 Correct 34 ms 25032 KB Output is correct
8 Correct 318 ms 30800 KB Output is correct
9 Correct 312 ms 35080 KB Output is correct
10 Correct 346 ms 39972 KB Output is correct
11 Correct 393 ms 45012 KB Output is correct
12 Correct 361 ms 48460 KB Output is correct
13 Correct 263 ms 52904 KB Output is correct
14 Correct 264 ms 57280 KB Output is correct
15 Correct 266 ms 61636 KB Output is correct
16 Correct 262 ms 65692 KB Output is correct
17 Correct 269 ms 69848 KB Output is correct
18 Correct 276 ms 74332 KB Output is correct
19 Correct 262 ms 78712 KB Output is correct
20 Correct 254 ms 82948 KB Output is correct
21 Correct 262 ms 86984 KB Output is correct
22 Correct 263 ms 91072 KB Output is correct
23 Correct 249 ms 95196 KB Output is correct
24 Correct 284 ms 99340 KB Output is correct
25 Correct 254 ms 103628 KB Output is correct
26 Correct 251 ms 108040 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 623 ms 129104 KB Output is correct
2 Correct 630 ms 135900 KB Output is correct
3 Correct 618 ms 142832 KB Output is correct
4 Correct 680 ms 150548 KB Output is correct
5 Correct 656 ms 157424 KB Output is correct
6 Correct 480 ms 162896 KB Output is correct
7 Correct 562 ms 169184 KB Output is correct
8 Correct 551 ms 175204 KB Output is correct
9 Correct 494 ms 181408 KB Output is correct
10 Correct 499 ms 187292 KB Output is correct
11 Correct 459 ms 193324 KB Output is correct

Subtask #4
0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 24184 KB Output is correct
2 Correct 29 ms 24372 KB Output is correct
3 Correct 30 ms 24840 KB Output is correct
4 Correct 26 ms 24840 KB Output is correct
5 Correct 26 ms 24840 KB Output is correct
6 Correct 27 ms 24840 KB Output is correct
7 Correct 34 ms 25032 KB Output is correct
8 Correct 318 ms 30800 KB Output is correct
9 Correct 312 ms 35080 KB Output is correct
10 Correct 346 ms 39972 KB Output is correct
11 Correct 393 ms 45012 KB Output is correct
12 Correct 361 ms 48460 KB Output is correct
13 Correct 263 ms 52904 KB Output is correct
14 Correct 264 ms 57280 KB Output is correct
15 Correct 266 ms 61636 KB Output is correct
16 Correct 262 ms 65692 KB Output is correct
17 Correct 269 ms 69848 KB Output is correct
18 Correct 276 ms 74332 KB Output is correct
19 Correct 262 ms 78712 KB Output is correct
20 Correct 254 ms 82948 KB Output is correct
21 Correct 262 ms 86984 KB Output is correct
22 Correct 263 ms 91072 KB Output is correct
23 Correct 249 ms 95196 KB Output is correct
24 Correct 284 ms 99340 KB Output is correct
25 Correct 254 ms 103628 KB Output is correct
26 Correct 251 ms 108040 KB Output is correct
27 Correct 623 ms 129104 KB Output is correct
28 Correct 630 ms 135900 KB Output is correct
29 Correct 618 ms 142832 KB Output is correct
30 Correct 680 ms 150548 KB Output is correct
31 Correct 656 ms 157424 KB Output is correct
32 Correct 480 ms 162896 KB Output is correct
33 Correct 562 ms 169184 KB Output is correct
34 Correct 551 ms 175204 KB Output is correct
35 Correct 494 ms 181408 KB Output is correct
36 Correct 499 ms 187292 KB Output is correct
37 Correct 459 ms 193324 KB Output is correct
38 Execution timed out 3046 ms 240472 KB Time limit exceeded
39 Halted 0 ms 0 KB -