oj.uz

Submission #635897

# Submission time Handle Problem Language Result Execution time Memory
635897 2022-08-27T10:19:53 Z Cross_Ratio Long Mansion (JOI17_long_mansion) C++14
10 / 100
 3000 ms 20284 KB 
#include <bits/stdc++.h>
using namespace std;
const int INF = 1e9;
int N;
int C[500005];
vector<vector<int>> A;
struct SegTree {
    vector<int> seg;
    int MAX;
    bool type; // 0 : ma, 1 : mi
    SegTree(int N, bool c) {
        type = c;
        int i;
        for(i=1;i<2*N;i*=2) {}
        seg.resize(i);
        MAX = i;
        for(i=0;i<MAX;i++) {
            seg[i] = (c?INF:-INF);
        }
    }
    void cons() {
        for(int i = MAX/2-1;i>=1;i--) {
            seg[i] = (type ? min(seg[2*i], seg[2*i+1]) : max(seg[2*i], seg[2*i+1]));
        }
    }
    void update(int n) {
        n += MAX/2;
        n /= 2;
        while(n) {
            seg[n] = (type ? min(seg[2*n], seg[2*n+1]) : max(seg[2*n], seg[2*n+1]));
            n /= 2;
        }
    }
    void Edit(int n, int a) {
        seg[n+MAX/2] = a;
        update(n);
    }
    int sum(int s, int e, int n, int ns, int ne) {
        if(e<=ns||ne<=s) return (type ? INF : -INF);
        if(s<=ns&&ne<=e) return seg[n];
        int mid = ns + ne >> 1;
        int v1 = sum(s, e, 2*n, ns, mid);
        int v2 = sum(s, e, 2*n+1, mid, ne);
        return (type ? min(v1,v2) : max(v1,v2));
    }
};
struct SegTree2 {
    vector<int> seg;
    int MAX;
    SegTree2(int N) {
        int i;
        for(i=1;i<2*N;i*=2) {}
        seg.resize(i);
        MAX = i;
    }
    void cons() {
        for(int i = MAX/2-1;i>=1;i--) {
            seg[i] = seg[2*i] | seg[2*i+1];
        }
    }
    void update(int n) {
        n += MAX/2;
        n /= 2;
        while(n) {
            seg[n] = seg[2*n] | seg[2*n+1];
            n /= 2;
        }
    }
    void Edit(int n, int a) {
        seg[n+MAX/2] = a;
        update(n);
    }
    int sum(int s, int e, int n, int ns, int ne) {
        if(e<=ns||ne<=s) return 0;
        if(s<=ns&&ne<=e) return seg[n];
        int mid = ns + ne >> 1;
        int v1 = sum(s, e, 2*n, ns, mid);
        int v2 = sum(s, e, 2*n+1, mid, ne);
        return v1|v2;
    }
};
int L[500005];
int R[500005];
void init(vector<int> _C, vector<vector<int>> _A) {
    N = _A.size();
    A = _A;
    int i, j;
    for(i=0;i<N-1;i++) C[i] = _C[i] - 1;
    for(i=0;i<N;i++) {
        for(j=0;j<A[i].size();j++) A[i][j]--;
    }
    for(i=0;i<N;i++) {
        L[i] = i;
        R[i] = i;
        set<int> S;
        for(int n : A[i]) S.insert(n);
        if(i&&S.find(C[i-1])!=S.end()) {
            if(R[i-1] >= i) {
                R[i] = R[i-1];
                L[i] = L[i-1];
                continue;
            }
            L[i] = min(L[i-1], L[i]);
        }
        int pt = i;
        while(pt!=L[i]) {
            pt--;
            for(int n : A[pt]) S.insert(n);
        }
        int pL = L[i], pR = R[i];
        while(true) {
            while(L[i]&& S.find(C[L[i]-1])!=S.end()) {
                L[i]--;
                for(int n : A[L[i]]) S.insert(n);
            }
            while(R[i]+1<N&&S.find(C[R[i]])!=S.end()) {
                R[i]++;
                for(int n : A[R[i]]) S.insert(n);
            }
            if(pL==L[i]&&pR==R[i]) break;
            pL= L[i];
            pR = R[i];
        }
    }
}
bool isPos(int a, int b) {
    a--;
    b--;
    return L[a]<=b&&b<=R[a];
}






signed main() {
    cin.sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int N;
    cin >> N;
    int i, j;
    vector<int> c(N-1);
    for(i=0;i<N-1;i++) cin >> c[i];
    vector<vector<int>> a(N);
    for(i=0;i<N;i++) {
        int sz;
        cin >> sz;
        a[i].resize(sz);
        for(j=0;j<sz;j++) cin >> a[i][j];
    }
    init(c, a);
    int Q;
    cin >> Q;
    while(Q--) {
        int x, y;
        cin >> x >> y;
        cout << (isPos(x, y) ? "YES\n": "NO\n");
    }
}

Compilation message

long_mansion.cpp: In member function 'int SegTree::sum(int, int, int, int, int)':
long_mansion.cpp:41:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   41 |         int mid = ns + ne >> 1;
      |                   ~~~^~~~
long_mansion.cpp: In member function 'int SegTree2::sum(int, int, int, int, int)':
long_mansion.cpp:76:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   76 |         int mid = ns + ne >> 1;
      |                   ~~~^~~~
long_mansion.cpp: In function 'void init(std::vector<int>, std::vector<std::vector<int> >)':
long_mansion.cpp:90:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |         for(j=0;j<A[i].size();j++) A[i][j]--;
      |                 ~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 768 KB Output is correct
2 Correct 80 ms 944 KB Output is correct
3 Correct 173 ms 1284 KB Output is correct
4 Correct 3 ms 724 KB Output is correct
5 Correct 6 ms 724 KB Output is correct
6 Correct 4 ms 804 KB Output is correct
7 Correct 7 ms 852 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 768 KB Output is correct
2 Correct 80 ms 944 KB Output is correct
3 Correct 173 ms 1284 KB Output is correct
4 Correct 3 ms 724 KB Output is correct
5 Correct 6 ms 724 KB Output is correct
6 Correct 4 ms 804 KB Output is correct
7 Correct 7 ms 852 KB Output is correct
8 Correct 130 ms 6604 KB Output is correct
9 Correct 97 ms 6480 KB Output is correct
10 Correct 160 ms 7004 KB Output is correct
11 Correct 286 ms 7700 KB Output is correct
12 Correct 103 ms 6000 KB Output is correct
13 Correct 89 ms 6808 KB Output is correct
14 Correct 85 ms 6724 KB Output is correct
15 Correct 88 ms 6732 KB Output is correct
16 Correct 109 ms 6552 KB Output is correct
17 Correct 97 ms 6780 KB Output is correct
18 Correct 93 ms 6776 KB Output is correct
19 Correct 83 ms 6756 KB Output is correct
20 Correct 88 ms 6756 KB Output is correct
21 Correct 86 ms 6620 KB Output is correct
22 Correct 90 ms 6656 KB Output is correct
23 Correct 92 ms 6632 KB Output is correct
24 Correct 91 ms 6628 KB Output is correct
25 Correct 95 ms 6604 KB Output is correct
26 Correct 111 ms 6612 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3038 ms 20284 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 768 KB Output is correct
2 Correct 80 ms 944 KB Output is correct
3 Correct 173 ms 1284 KB Output is correct
4 Correct 3 ms 724 KB Output is correct
5 Correct 6 ms 724 KB Output is correct
6 Correct 4 ms 804 KB Output is correct
7 Correct 7 ms 852 KB Output is correct
8 Correct 130 ms 6604 KB Output is correct
9 Correct 97 ms 6480 KB Output is correct
10 Correct 160 ms 7004 KB Output is correct
11 Correct 286 ms 7700 KB Output is correct
12 Correct 103 ms 6000 KB Output is correct
13 Correct 89 ms 6808 KB Output is correct
14 Correct 85 ms 6724 KB Output is correct
15 Correct 88 ms 6732 KB Output is correct
16 Correct 109 ms 6552 KB Output is correct
17 Correct 97 ms 6780 KB Output is correct
18 Correct 93 ms 6776 KB Output is correct
19 Correct 83 ms 6756 KB Output is correct
20 Correct 88 ms 6756 KB Output is correct
21 Correct 86 ms 6620 KB Output is correct
22 Correct 90 ms 6656 KB Output is correct
23 Correct 92 ms 6632 KB Output is correct
24 Correct 91 ms 6628 KB Output is correct
25 Correct 95 ms 6604 KB Output is correct
26 Correct 111 ms 6612 KB Output is correct
27 Execution timed out 3038 ms 20284 KB Time limit exceeded
28 Halted 0 ms 0 KB -