oj.uz

Submission #669852

# Submission time Handle Problem Language Result Execution time Memory
669852 2022-12-07T13:45:42 Z Do_you_copy Long Mansion (JOI17_long_mansion) C++17
100 / 100
 232 ms 52364 KB 
/*
    I find it wholesome to be alone the greater part of the time.
    To be in company, even with the best, is soon wearisome and dissipating.
    I love to be alone.
    I never found the companion that was so companionable as solitude.
*/
#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define faster ios_base::sync_with_stdio(0); cin.tie(0);

using namespace std;
using ll = long long;
using ld = long double;
using pii = pair <int, int>;
mt19937_64 Rand(chrono::steady_clock::now().time_since_epoch().count());
const int maxN = 5e5 + 10;
//const int Mod = 1e9 + 7;
//const int inf =
int n;
vector <int> S[maxN];
int L[maxN], R[maxN];
int l[maxN], r[maxN];
int last[maxN];
int c[maxN];

bool inside(int l, int r, int x){
    return l <= x && x <= r;
}

bool can(int l, int r, int x){
    return inside(l, r, L[x]) || inside(l, r, R[x]);
}

void Init(){
    cin >> n;
    for (int i = 1; i < n; ++i) cin >> c[i];
    for (int i = 1; i <= n; ++i){
        int b; cin >> b;
        while (b--){
            int x; cin >> x;
            S[i].pb(x);
        }
    }
    for (int i = 2; i <= n; ++i){
        for (int j: S[i - 1]){
            last[j] = i - 1;
        }
        L[i] = last[c[i - 1]];
    }
    fill(last + 1, last + n + 1, n + 1);
    R[n] = n + 1;
    for (int i = n - 1; i >= 1; --i){
        for (int j: S[i + 1]){
            last[j] = i + 1;
        }
        R[i] = last[c[i]];
    }
    for (int i = 1; i <= n; ++i){
        l[i] = r[i] = i;
        while (1){
            if (l[i] > 1 && can(l[i], r[i], l[i] - 1)){
                r[i] = max(r[i], r[l[i] - 1]);
                l[i] = l[l[i] - 1];
            }
            else{
                if (r[i] < n && can(l[i], r[i], r[i] + 1))
                    ++r[i];
                else break;
            }
        }
    }
    int q; cin >> q;
    while (q--){
        int x, y;
        cin >> x >> y;
        cout << (inside(l[x], r[x], y) ? "YES\n" : "NO\n");
    }
}

#define debug
#define taskname "test"
signed main(){
    faster
    if (fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin);
        freopen(taskname".out", "w", stdout);
    }
    int tt = 1;
    //cin >> tt;
    while (tt--){
        Init();
    }
    if (fopen("timeout.txt", "r")){
        ofstream timeout("timeout.txt");
        timeout << signed(double(clock()) / CLOCKS_PER_SEC * 1000);
        timeout.close();
        #ifndef debug
        cerr << "Time elapsed: " << signed(double(clock()) / CLOCKS_PER_SEC * 1000) << "ms\n";
        #endif // debug
    }
}

Compilation message

long_mansion.cpp: In function 'int main()':
long_mansion.cpp:87:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |         freopen(taskname".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
long_mansion.cpp:88:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |         freopen(taskname".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12244 KB Output is correct
2 Correct 9 ms 12340 KB Output is correct
3 Correct 9 ms 12372 KB Output is correct
4 Correct 8 ms 12244 KB Output is correct
5 Correct 8 ms 12244 KB Output is correct
6 Correct 9 ms 12336 KB Output is correct
7 Correct 8 ms 12244 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12244 KB Output is correct
2 Correct 9 ms 12340 KB Output is correct
3 Correct 9 ms 12372 KB Output is correct
4 Correct 8 ms 12244 KB Output is correct
5 Correct 8 ms 12244 KB Output is correct
6 Correct 9 ms 12336 KB Output is correct
7 Correct 8 ms 12244 KB Output is correct
8 Correct 98 ms 18044 KB Output is correct
9 Correct 89 ms 18000 KB Output is correct
10 Correct 89 ms 18380 KB Output is correct
11 Correct 92 ms 18908 KB Output is correct
12 Correct 79 ms 17708 KB Output is correct
13 Correct 84 ms 18224 KB Output is correct
14 Correct 84 ms 18232 KB Output is correct
15 Correct 86 ms 18328 KB Output is correct
16 Correct 86 ms 18092 KB Output is correct
17 Correct 85 ms 18312 KB Output is correct
18 Correct 91 ms 18232 KB Output is correct
19 Correct 84 ms 18304 KB Output is correct
20 Correct 93 ms 18244 KB Output is correct
21 Correct 96 ms 18100 KB Output is correct
22 Correct 84 ms 18124 KB Output is correct
23 Correct 89 ms 17992 KB Output is correct
24 Correct 94 ms 17996 KB Output is correct
25 Correct 91 ms 18100 KB Output is correct
26 Correct 86 ms 18004 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 25676 KB Output is correct
2 Correct 153 ms 26996 KB Output is correct
3 Correct 145 ms 26812 KB Output is correct
4 Correct 153 ms 27084 KB Output is correct
5 Correct 161 ms 27072 KB Output is correct
6 Correct 128 ms 25804 KB Output is correct
7 Correct 123 ms 25532 KB Output is correct
8 Correct 127 ms 25548 KB Output is correct
9 Correct 132 ms 25728 KB Output is correct
10 Correct 125 ms 25572 KB Output is correct
11 Correct 128 ms 25588 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12244 KB Output is correct
2 Correct 9 ms 12340 KB Output is correct
3 Correct 9 ms 12372 KB Output is correct
4 Correct 8 ms 12244 KB Output is correct
5 Correct 8 ms 12244 KB Output is correct
6 Correct 9 ms 12336 KB Output is correct
7 Correct 8 ms 12244 KB Output is correct
8 Correct 98 ms 18044 KB Output is correct
9 Correct 89 ms 18000 KB Output is correct
10 Correct 89 ms 18380 KB Output is correct
11 Correct 92 ms 18908 KB Output is correct
12 Correct 79 ms 17708 KB Output is correct
13 Correct 84 ms 18224 KB Output is correct
14 Correct 84 ms 18232 KB Output is correct
15 Correct 86 ms 18328 KB Output is correct
16 Correct 86 ms 18092 KB Output is correct
17 Correct 85 ms 18312 KB Output is correct
18 Correct 91 ms 18232 KB Output is correct
19 Correct 84 ms 18304 KB Output is correct
20 Correct 93 ms 18244 KB Output is correct
21 Correct 96 ms 18100 KB Output is correct
22 Correct 84 ms 18124 KB Output is correct
23 Correct 89 ms 17992 KB Output is correct
24 Correct 94 ms 17996 KB Output is correct
25 Correct 91 ms 18100 KB Output is correct
26 Correct 86 ms 18004 KB Output is correct
27 Correct 150 ms 25676 KB Output is correct
28 Correct 153 ms 26996 KB Output is correct
29 Correct 145 ms 26812 KB Output is correct
30 Correct 153 ms 27084 KB Output is correct
31 Correct 161 ms 27072 KB Output is correct
32 Correct 128 ms 25804 KB Output is correct
33 Correct 123 ms 25532 KB Output is correct
34 Correct 127 ms 25548 KB Output is correct
35 Correct 132 ms 25728 KB Output is correct
36 Correct 125 ms 25572 KB Output is correct
37 Correct 128 ms 25588 KB Output is correct
38 Correct 211 ms 47052 KB Output is correct
39 Correct 225 ms 52364 KB Output is correct
40 Correct 201 ms 40484 KB Output is correct
41 Correct 232 ms 50772 KB Output is correct
42 Correct 127 ms 26728 KB Output is correct
43 Correct 153 ms 26752 KB Output is correct
44 Correct 175 ms 34764 KB Output is correct
45 Correct 179 ms 35000 KB Output is correct
46 Correct 200 ms 35196 KB Output is correct
47 Correct 137 ms 26740 KB Output is correct
48 Correct 129 ms 26588 KB Output is correct
49 Correct 188 ms 34836 KB Output is correct
50 Correct 179 ms 34868 KB Output is correct
51 Correct 198 ms 35232 KB Output is correct
52 Correct 178 ms 33728 KB Output is correct
53 Correct 191 ms 40936 KB Output is correct
54 Correct 215 ms 48088 KB Output is correct
55 Correct 198 ms 41212 KB Output is correct