oj.uz

Submission #370626

# Submission time Handle Problem Language Result Execution time Memory
370626 2021-02-24T09:42:51 Z balbit Long Mansion (JOI17_long_mansion) C++14
100 / 100
 1407 ms 130796 KB 
#include <bits/stdc++.h>
// #define BALBIT 1
using namespace std;

#define ll long long
#define pii pair<int, int>
#define f first
#define s second

#define pb push_back
#define SZ(x) (int)((x).size())
#define REP1(i,n) for(int i = 1; i<=n;++i)
#define REP(i,n)  for (int i = 0; i<n;++i)

#ifdef BALBIT
#define bug(...) cout<<"#"<<__LINE__<<": "<<#__VA_ARGS__<<"- ", _do(__VA_ARGS__)
template<typename T> void _do(T && x) {cout<<x<<endl;}
template<typename T, typename ...S> void _do(T && x, S&& ...y) {cout<<x<<", "; _do(y...);}
#else
#define bug(...)
#define endl '\n'
#endif // BALBIT

const int inf = 1e9;
const int N = 500005;

int tol[21][N], tor[21][N], need[N], lb[N], rb[N];
int last[N];
vector<int> keys[N];

signed main(){
    ios::sync_with_stdio(0), cin.tie(0);
    // cout<<"HI";
    // bug("HI"); return 0;
    int n; cin>>n;
    // assert(n<=10);
//    tol[0] = -inf;
    fill(last, last+n+1, -inf);
    REP1(i,n-1) cin>>need[i];
    REP1(i,n) {
        int k; cin>>k;
        REP(j,k) {
            int y; cin>>y; keys[i].pb(y);
            last[y] = i;
        }
        if(i !=n)
            tol[0][i] = last[need[i]];
        else
            tol[0][i] = -inf;
    }
    // return 0;
//    tol[n] = inf;
    fill(last, last+n+1, inf);
    for(int i = n; i>=1; --i) {
        for(int y : keys[i]) last[y] = i;
        if (i!=1)
            tor[0][i] = last[need[i-1]];
        else
            tor[0][i] = inf;
    }
    // return 0;
    REP1(j,20) {
        int df = (1<<(j-1));
        REP1(i,n) {
            tol[j][i] = tol[j-1][i];
            tor[j][i] = tor[j-1][i];
            if(i+df<=n)
                tol[j][i] = min(tol[j][i], tol[j-1][i+df]);
            if(i-df>=1)
                tor[j][i] = max(tor[j][i], tor[j-1][i-df]);
        }
    }
    // return 0;
    // int bigr = 0;
    REP1(i,n) {
        // bug(i);
        if(rb[i-1] >= i) {
            // covered
            int at = i;
            for(int j = 20; j>=0; --j) {
                if(tol[j][at] >= i) {
                    at += (1<<j);
                    
                }
            }
            bug(at);
            if(tor[0][i]<=at) {
                lb[i] = lb[i-1]; rb[i] = rb[i-1];
            }else{
                lb[i] = i; rb[i] = at;
            }
            bug(i, lb[i], rb[i]);
        }else{
            lb[i] = rb[i] = i;
            for(;; ) {
                // grow to the left
                for(int j = 20; j>=0; --j) {
                    if(tor[j][lb[i]] <= rb[i]) {
                        lb[i] -= (1<<j);
                    }
                }
                int tmp = rb[i];
                for(int j = 20; j>=0; --j) {
                    if(tol[j][rb[i]] >= lb[i]) {
                        rb[i] += (1<<j);
                    }
                }
                if(tmp == rb[i]) break;
            }
            bug(i, lb[i], rb[i]);
        }
    }
    // return 0;
    int q; cin>>q;
    while(q--) {
        int x, y; cin>>x>>y;
        // bug(x,lb[x],rb[x],y);
        if(y>=lb[x]&&y<=rb[x]) cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12908 KB Output is correct
2 Correct 11 ms 13164 KB Output is correct
3 Correct 12 ms 13548 KB Output is correct
4 Correct 11 ms 12908 KB Output is correct
5 Correct 11 ms 12908 KB Output is correct
6 Correct 11 ms 12908 KB Output is correct
7 Correct 11 ms 12908 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12908 KB Output is correct
2 Correct 11 ms 13164 KB Output is correct
3 Correct 12 ms 13548 KB Output is correct
4 Correct 11 ms 12908 KB Output is correct
5 Correct 11 ms 12908 KB Output is correct
6 Correct 11 ms 12908 KB Output is correct
7 Correct 11 ms 12908 KB Output is correct
8 Correct 138 ms 18796 KB Output is correct
9 Correct 152 ms 18796 KB Output is correct
10 Correct 142 ms 19308 KB Output is correct
11 Correct 137 ms 19948 KB Output is correct
12 Correct 128 ms 18156 KB Output is correct
13 Correct 135 ms 18924 KB Output is correct
14 Correct 151 ms 18924 KB Output is correct
15 Correct 133 ms 19052 KB Output is correct
16 Correct 141 ms 18816 KB Output is correct
17 Correct 132 ms 18924 KB Output is correct
18 Correct 136 ms 19316 KB Output is correct
19 Correct 133 ms 19044 KB Output is correct
20 Correct 136 ms 18924 KB Output is correct
21 Correct 134 ms 18796 KB Output is correct
22 Correct 133 ms 18924 KB Output is correct
23 Correct 139 ms 18796 KB Output is correct
24 Correct 156 ms 18924 KB Output is correct
25 Correct 137 ms 18900 KB Output is correct
26 Correct 139 ms 18796 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 250 ms 41324 KB Output is correct
2 Correct 250 ms 43116 KB Output is correct
3 Correct 246 ms 42732 KB Output is correct
4 Correct 244 ms 43116 KB Output is correct
5 Correct 244 ms 43116 KB Output is correct
6 Correct 211 ms 41964 KB Output is correct
7 Correct 206 ms 41580 KB Output is correct
8 Correct 213 ms 41708 KB Output is correct
9 Correct 212 ms 41708 KB Output is correct
10 Correct 216 ms 41580 KB Output is correct
11 Correct 249 ms 41708 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12908 KB Output is correct
2 Correct 11 ms 13164 KB Output is correct
3 Correct 12 ms 13548 KB Output is correct
4 Correct 11 ms 12908 KB Output is correct
5 Correct 11 ms 12908 KB Output is correct
6 Correct 11 ms 12908 KB Output is correct
7 Correct 11 ms 12908 KB Output is correct
8 Correct 138 ms 18796 KB Output is correct
9 Correct 152 ms 18796 KB Output is correct
10 Correct 142 ms 19308 KB Output is correct
11 Correct 137 ms 19948 KB Output is correct
12 Correct 128 ms 18156 KB Output is correct
13 Correct 135 ms 18924 KB Output is correct
14 Correct 151 ms 18924 KB Output is correct
15 Correct 133 ms 19052 KB Output is correct
16 Correct 141 ms 18816 KB Output is correct
17 Correct 132 ms 18924 KB Output is correct
18 Correct 136 ms 19316 KB Output is correct
19 Correct 133 ms 19044 KB Output is correct
20 Correct 136 ms 18924 KB Output is correct
21 Correct 134 ms 18796 KB Output is correct
22 Correct 133 ms 18924 KB Output is correct
23 Correct 139 ms 18796 KB Output is correct
24 Correct 156 ms 18924 KB Output is correct
25 Correct 137 ms 18900 KB Output is correct
26 Correct 139 ms 18796 KB Output is correct
27 Correct 250 ms 41324 KB Output is correct
28 Correct 250 ms 43116 KB Output is correct
29 Correct 246 ms 42732 KB Output is correct
30 Correct 244 ms 43116 KB Output is correct
31 Correct 244 ms 43116 KB Output is correct
32 Correct 211 ms 41964 KB Output is correct
33 Correct 206 ms 41580 KB Output is correct
34 Correct 213 ms 41708 KB Output is correct
35 Correct 212 ms 41708 KB Output is correct
36 Correct 216 ms 41580 KB Output is correct
37 Correct 249 ms 41708 KB Output is correct
38 Correct 427 ms 110188 KB Output is correct
39 Correct 507 ms 130796 KB Output is correct
40 Correct 370 ms 87836 KB Output is correct
41 Correct 472 ms 129132 KB Output is correct
42 Correct 211 ms 42732 KB Output is correct
43 Correct 213 ms 42732 KB Output is correct
44 Correct 293 ms 66412 KB Output is correct
45 Correct 300 ms 66576 KB Output is correct
46 Correct 296 ms 66796 KB Output is correct
47 Correct 213 ms 42860 KB Output is correct
48 Correct 210 ms 42604 KB Output is correct
49 Correct 289 ms 66412 KB Output is correct
50 Correct 326 ms 66540 KB Output is correct
51 Correct 300 ms 66796 KB Output is correct
52 Correct 306 ms 65644 KB Output is correct
53 Correct 376 ms 88188 KB Output is correct
54 Correct 1407 ms 110976 KB Output is correct
55 Correct 355 ms 88428 KB Output is correct