oj.uz

Submission #593930

# Submission time Handle Problem Language Result Execution time Memory
593930 2022-07-11T17:39:20 Z azberjibiou Event Hopping (BOI22_events) C++17
100 / 100
 1388 ms 18816 KB 
#include <bits/stdc++.h>
#define gibon ios::sync_with_stdio(false); cin.tie(0);
#define fir first
#define sec second
#define pdd pair<long double, long double>
#define pii pair<int, int>
#define pll pair<ll, ll>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
typedef long long ll;
using namespace std;
const int mxN=200010;
const int MOD=1e9+7;
int N, Q, M;
pii A[mxN];
vector <int> coor;
int sps[mxN][20];
int mins[mxN];
int ans[mxN];
pii rng[mxN];
pii qry[mxN];
void make_coor()
{
    for(int i=1;i<=N;i++)   coor.push_back(A[i].fir), coor.push_back(A[i].sec);
    sort(coor.begin(), coor.end());
    coor.erase(unique(coor.begin(), coor.end()), coor.end());
    for(int i=1;i<=N;i++)   A[i].fir=lower_bound(coor.begin(), coor.end(), A[i].fir)-coor.begin();
    for(int i=1;i<=N;i++)   A[i].sec=lower_bound(coor.begin(), coor.end(), A[i].sec)-coor.begin();
    M=coor.size();
}
int seg[4*mxN];
void init(int idx, int s, int e)
{
    if(s==e)
    {
        seg[idx]=mins[s];
        return;
    }
    int mid=(s+e)/2;
    init(2*idx, s, mid);
    init(2*idx+1, mid+1, e);
    seg[idx]=min(seg[2*idx], seg[2*idx+1]);
}
int solv(int idx, int s1, int e1, int s2, int e2)
{
    if(s2>e1 || s1>e2)  return M;
    if(s2<=s1 && e1<=e2)    return seg[idx];
    int mid=(s1+e1)/2;
    return min(solv(2*idx, s1, mid, s2, e2), solv(2*idx+1, mid+1, e1, s2, e2));
}
int main()
{
    gibon
    cin >> N >> Q;
    for(int i=1;i<=N;i++)   cin >> A[i].fir >> A[i].sec;
    make_coor();
    for(int i=1;i<=N;i++)   sps[i][0]=A[i].fir;
    for(int i=1;i<20;i++)
    {
        for(int j=0;j<M;j++)    mins[j]=M;
        for(int j=1;j<=N;j++)   mins[A[j].sec]=min(mins[A[j].sec], sps[j][i-1]);
        init(1, 0, M-1);
        for(int j=1;j<=N;j++)   sps[j][i]=solv(1, 0, M-1, sps[j][i-1], A[j].sec);
    }
    for(int i=1;i<=Q;i++)   cin >> qry[i].fir >> qry[i].sec;
    for(int i=1;i<=Q;i++)   rng[i]=A[qry[i].sec];
    for(int i=19;i>=0;i--)
    {
        for(int j=0;j<M;j++)    mins[j]=M;
        for(int j=1;j<=N;j++)   mins[A[j].sec]=min(mins[A[j].sec], sps[j][i]);
        init(1, 0, M-1);
        for(int j=1;j<=Q;j++)
        {
            int res=solv(1, 0, M-1, rng[j].fir, rng[j].sec);
            if(res>A[qry[j].fir].sec)   ans[j]+=(1<<i), rng[j].fir=res;
        }
    }
    for(int i=1;i<=Q;i++)
    {
        if(sps[qry[i].sec][19]>A[qry[i].fir].sec || A[qry[i].sec].sec<A[qry[i].fir].sec)    cout << "impossible\n";
        else if(qry[i].sec==qry[i].fir) cout << "0\n";
        else if(A[qry[i].sec].fir<=A[qry[i].fir].sec)   cout << "1\n";
        else    cout << ans[i]+2 << '\n';
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 756 ms 16892 KB Output is correct
3 Correct 818 ms 16940 KB Output is correct
4 Correct 840 ms 16832 KB Output is correct
5 Correct 861 ms 16960 KB Output is correct
6 Correct 855 ms 17052 KB Output is correct
7 Correct 806 ms 17104 KB Output is correct
8 Correct 659 ms 18776 KB Output is correct
9 Correct 652 ms 18668 KB Output is correct
10 Correct 895 ms 17268 KB Output is correct
11 Correct 944 ms 18352 KB Output is correct
12 Correct 450 ms 16548 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 4 ms 468 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 3 ms 480 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 3 ms 484 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 4 ms 468 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 3 ms 480 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 3 ms 484 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 5 ms 512 KB Output is correct
14 Correct 4 ms 476 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 4 ms 488 KB Output is correct
17 Correct 4 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 276 ms 4300 KB Output is correct
20 Correct 235 ms 4328 KB Output is correct
21 Correct 337 ms 4668 KB Output is correct
22 Correct 325 ms 4700 KB Output is correct
23 Correct 492 ms 4300 KB Output is correct
24 Correct 435 ms 4276 KB Output is correct
25 Correct 260 ms 4288 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 4 ms 468 KB Output is correct
4 Correct 3 ms 468 KB Output is correct
5 Correct 3 ms 480 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 3 ms 484 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 5 ms 480 KB Output is correct
14 Correct 3 ms 468 KB Output is correct
15 Correct 3 ms 476 KB Output is correct
16 Correct 4 ms 496 KB Output is correct
17 Correct 4 ms 488 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 527 ms 13208 KB Output is correct
20 Correct 489 ms 12360 KB Output is correct
21 Correct 463 ms 12988 KB Output is correct
22 Correct 523 ms 14224 KB Output is correct
23 Correct 425 ms 14636 KB Output is correct
24 Correct 535 ms 14612 KB Output is correct
25 Correct 61 ms 11080 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 642 ms 16864 KB Output is correct
2 Correct 846 ms 16840 KB Output is correct
3 Correct 871 ms 16632 KB Output is correct
4 Correct 649 ms 18596 KB Output is correct
5 Correct 867 ms 17144 KB Output is correct
6 Correct 1072 ms 18376 KB Output is correct
7 Correct 1113 ms 18428 KB Output is correct
8 Correct 1213 ms 18508 KB Output is correct
9 Correct 470 ms 14572 KB Output is correct
10 Correct 872 ms 18048 KB Output is correct
11 Correct 874 ms 17832 KB Output is correct
12 Correct 926 ms 18052 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 756 ms 16892 KB Output is correct
3 Correct 818 ms 16940 KB Output is correct
4 Correct 840 ms 16832 KB Output is correct
5 Correct 861 ms 16960 KB Output is correct
6 Correct 855 ms 17052 KB Output is correct
7 Correct 806 ms 17104 KB Output is correct
8 Correct 659 ms 18776 KB Output is correct
9 Correct 652 ms 18668 KB Output is correct
10 Correct 895 ms 17268 KB Output is correct
11 Correct 944 ms 18352 KB Output is correct
12 Correct 450 ms 16548 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 4 ms 468 KB Output is correct
16 Correct 3 ms 468 KB Output is correct
17 Correct 3 ms 480 KB Output is correct
18 Correct 3 ms 468 KB Output is correct
19 Correct 3 ms 484 KB Output is correct
20 Correct 3 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 3 ms 468 KB Output is correct
25 Correct 5 ms 512 KB Output is correct
26 Correct 4 ms 476 KB Output is correct
27 Correct 3 ms 468 KB Output is correct
28 Correct 4 ms 488 KB Output is correct
29 Correct 4 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 276 ms 4300 KB Output is correct
32 Correct 235 ms 4328 KB Output is correct
33 Correct 337 ms 4668 KB Output is correct
34 Correct 325 ms 4700 KB Output is correct
35 Correct 492 ms 4300 KB Output is correct
36 Correct 435 ms 4276 KB Output is correct
37 Correct 260 ms 4288 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 0 ms 340 KB Output is correct
40 Correct 3 ms 468 KB Output is correct
41 Correct 5 ms 480 KB Output is correct
42 Correct 3 ms 468 KB Output is correct
43 Correct 3 ms 476 KB Output is correct
44 Correct 4 ms 496 KB Output is correct
45 Correct 4 ms 488 KB Output is correct
46 Correct 1 ms 468 KB Output is correct
47 Correct 527 ms 13208 KB Output is correct
48 Correct 489 ms 12360 KB Output is correct
49 Correct 463 ms 12988 KB Output is correct
50 Correct 523 ms 14224 KB Output is correct
51 Correct 425 ms 14636 KB Output is correct
52 Correct 535 ms 14612 KB Output is correct
53 Correct 61 ms 11080 KB Output is correct
54 Correct 642 ms 16864 KB Output is correct
55 Correct 846 ms 16840 KB Output is correct
56 Correct 871 ms 16632 KB Output is correct
57 Correct 649 ms 18596 KB Output is correct
58 Correct 867 ms 17144 KB Output is correct
59 Correct 1072 ms 18376 KB Output is correct
60 Correct 1113 ms 18428 KB Output is correct
61 Correct 1213 ms 18508 KB Output is correct
62 Correct 470 ms 14572 KB Output is correct
63 Correct 872 ms 18048 KB Output is correct
64 Correct 874 ms 17832 KB Output is correct
65 Correct 926 ms 18052 KB Output is correct
66 Correct 0 ms 340 KB Output is correct
67 Correct 657 ms 16824 KB Output is correct
68 Correct 907 ms 16880 KB Output is correct
69 Correct 907 ms 16856 KB Output is correct
70 Correct 912 ms 17028 KB Output is correct
71 Correct 813 ms 17008 KB Output is correct
72 Correct 831 ms 17092 KB Output is correct
73 Correct 724 ms 18780 KB Output is correct
74 Correct 649 ms 18816 KB Output is correct
75 Correct 887 ms 17232 KB Output is correct
76 Correct 922 ms 18384 KB Output is correct
77 Correct 425 ms 16596 KB Output is correct
78 Correct 0 ms 340 KB Output is correct
79 Correct 3 ms 468 KB Output is correct
80 Correct 3 ms 484 KB Output is correct
81 Correct 4 ms 468 KB Output is correct
82 Correct 3 ms 468 KB Output is correct
83 Correct 5 ms 468 KB Output is correct
84 Correct 3 ms 468 KB Output is correct
85 Correct 1 ms 468 KB Output is correct
86 Correct 265 ms 4280 KB Output is correct
87 Correct 225 ms 4328 KB Output is correct
88 Correct 334 ms 4668 KB Output is correct
89 Correct 340 ms 4700 KB Output is correct
90 Correct 487 ms 4364 KB Output is correct
91 Correct 412 ms 4268 KB Output is correct
92 Correct 249 ms 4392 KB Output is correct
93 Correct 482 ms 13196 KB Output is correct
94 Correct 527 ms 12496 KB Output is correct
95 Correct 457 ms 13112 KB Output is correct
96 Correct 507 ms 14388 KB Output is correct
97 Correct 463 ms 14616 KB Output is correct
98 Correct 553 ms 14588 KB Output is correct
99 Correct 53 ms 11096 KB Output is correct
100 Correct 1145 ms 18440 KB Output is correct
101 Correct 1347 ms 18356 KB Output is correct
102 Correct 1388 ms 18456 KB Output is correct
103 Correct 997 ms 18080 KB Output is correct
104 Correct 899 ms 17628 KB Output is correct
105 Correct 948 ms 18096 KB Output is correct
106 Correct 851 ms 16212 KB Output is correct
107 Correct 1071 ms 16324 KB Output is correct
108 Correct 1020 ms 16992 KB Output is correct
109 Correct 934 ms 16944 KB Output is correct
110 Correct 1317 ms 17928 KB Output is correct
111 Correct 1156 ms 17980 KB Output is correct