oj.uz

Submission #652162

# Submission time Handle Problem Language Result Execution time Memory
652162 2022-10-21T14:22:49 Z victor_gao Event Hopping 2 (JOI21_event2) C++17
7 / 100
 81 ms 17024 KB 
//#pragma GCC optimize("Ofast,unroll-loops,O3")
//#pragma GCC optimize("avx,avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,fma,tune=native")
#include<bits/stdc++.h>
//#include<bits/extc++.h>
//#pragma pack(1)
#define fast ios::sync_with_stdio(0); cin.tie(0);
#define int long long
#define pii pair<int,int>
#define x first
#define y second
#define N 100015
using namespace std;
//using namespace __gnu_pbds;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//typedef tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update> order_multiset;
//typedef tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> order_set;
struct lisan{
    vector<int>vt;
    void in(int x){ vt.push_back(x); }
    void build(){
        sort(vt.begin(),vt.end());
        vt.resize(unique(vt.begin(),vt.end())-vt.begin());
    }
    int find(int x){ return upper_bound(vt.begin(),vt.end(),x)-vt.begin(); }
}uni;
int n,k;
pii seg[N];
vector<int>ans,dp(2*N+5,0LL),all[2*N+5];

signed main(){
    fast
    cin>>n>>k;
    for (int i=1;i<=n;i++){
        cin>>seg[i].x>>seg[i].y;
        uni.in(seg[i].x); uni.in(seg[i].y);
    }
    uni.build();
    for (int i=1;i<=n;i++){
        seg[i].x=uni.find(seg[i].x);
        seg[i].y=uni.find(seg[i].y);
        all[seg[i].x].push_back(seg[i].y);
    }
    for (int i=2*N+3;i>=0;i--){
        dp[i]=max(dp[i],dp[i+1]);
        for (auto j:all[i])
            dp[i]=max(dp[i],dp[j]+1);
    }
    int r=0,need=k;
    for (int i=1;i<=n;i++){
        if (seg[i].x>=r&&dp[seg[i].y]>=need-1){
            ans.push_back(i);
            r=seg[i].y;
            need--;
        }
        if (need==0) break;
    }
    if (need==0){
        for (auto i:ans)
            cout<<i<<'\n';
    }
    else cout<<"-1\n";
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6484 KB Output is correct
2 Correct 5 ms 6484 KB Output is correct
3 Correct 5 ms 6484 KB Output is correct
4 Correct 54 ms 16964 KB Output is correct
5 Correct 75 ms 17024 KB Output is correct
6 Correct 55 ms 16948 KB Output is correct
7 Correct 81 ms 16804 KB Output is correct
8 Correct 56 ms 17008 KB Output is correct
9 Correct 58 ms 17012 KB Output is correct
10 Correct 58 ms 16968 KB Output is correct
11 Correct 52 ms 16844 KB Output is correct
12 Correct 58 ms 16012 KB Output is correct
13 Correct 58 ms 15956 KB Output is correct
14 Correct 55 ms 15940 KB Output is correct
15 Correct 61 ms 15812 KB Output is correct
16 Correct 51 ms 15088 KB Output is correct
17 Correct 54 ms 15052 KB Output is correct
18 Correct 55 ms 14992 KB Output is correct
19 Correct 50 ms 14736 KB Output is correct
20 Correct 53 ms 14752 KB Output is correct
21 Correct 53 ms 14800 KB Output is correct
22 Correct 56 ms 14716 KB Output is correct
23 Correct 69 ms 14736 KB Output is correct
24 Correct 56 ms 14768 KB Output is correct
25 Correct 63 ms 14708 KB Output is correct
26 Correct 72 ms 14736 KB Output is correct
27 Correct 65 ms 14776 KB Output is correct
28 Correct 51 ms 14736 KB Output is correct
29 Correct 69 ms 14744 KB Output is correct
30 Correct 53 ms 14760 KB Output is correct
31 Correct 52 ms 14768 KB Output is correct
32 Correct 57 ms 14696 KB Output is correct
33 Correct 65 ms 14796 KB Output is correct
34 Correct 53 ms 15668 KB Output is correct
35 Correct 50 ms 15244 KB Output is correct
36 Correct 49 ms 14976 KB Output is correct
37 Correct 54 ms 15944 KB Output is correct
38 Correct 51 ms 15884 KB Output is correct
39 Correct 54 ms 15912 KB Output is correct
40 Correct 50 ms 15812 KB Output is correct
41 Correct 53 ms 15812 KB Output is correct
42 Correct 58 ms 14664 KB Output is correct
43 Correct 65 ms 15920 KB Output is correct
44 Correct 68 ms 15884 KB Output is correct
45 Correct 62 ms 15904 KB Output is correct
46 Correct 62 ms 15812 KB Output is correct

Subtask #2
0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6484 KB Output is correct
2 Correct 5 ms 6484 KB Output is correct
3 Incorrect 4 ms 6484 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6484 KB Output is correct
2 Correct 5 ms 6484 KB Output is correct
3 Incorrect 4 ms 6484 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6484 KB Output is correct
2 Correct 5 ms 6484 KB Output is correct
3 Correct 5 ms 6484 KB Output is correct
4 Correct 54 ms 16964 KB Output is correct
5 Correct 75 ms 17024 KB Output is correct
6 Correct 55 ms 16948 KB Output is correct
7 Correct 81 ms 16804 KB Output is correct
8 Correct 56 ms 17008 KB Output is correct
9 Correct 58 ms 17012 KB Output is correct
10 Correct 58 ms 16968 KB Output is correct
11 Correct 52 ms 16844 KB Output is correct
12 Correct 58 ms 16012 KB Output is correct
13 Correct 58 ms 15956 KB Output is correct
14 Correct 55 ms 15940 KB Output is correct
15 Correct 61 ms 15812 KB Output is correct
16 Correct 51 ms 15088 KB Output is correct
17 Correct 54 ms 15052 KB Output is correct
18 Correct 55 ms 14992 KB Output is correct
19 Correct 50 ms 14736 KB Output is correct
20 Correct 53 ms 14752 KB Output is correct
21 Correct 53 ms 14800 KB Output is correct
22 Correct 56 ms 14716 KB Output is correct
23 Correct 69 ms 14736 KB Output is correct
24 Correct 56 ms 14768 KB Output is correct
25 Correct 63 ms 14708 KB Output is correct
26 Correct 72 ms 14736 KB Output is correct
27 Correct 65 ms 14776 KB Output is correct
28 Correct 51 ms 14736 KB Output is correct
29 Correct 69 ms 14744 KB Output is correct
30 Correct 53 ms 14760 KB Output is correct
31 Correct 52 ms 14768 KB Output is correct
32 Correct 57 ms 14696 KB Output is correct
33 Correct 65 ms 14796 KB Output is correct
34 Correct 53 ms 15668 KB Output is correct
35 Correct 50 ms 15244 KB Output is correct
36 Correct 49 ms 14976 KB Output is correct
37 Correct 54 ms 15944 KB Output is correct
38 Correct 51 ms 15884 KB Output is correct
39 Correct 54 ms 15912 KB Output is correct
40 Correct 50 ms 15812 KB Output is correct
41 Correct 53 ms 15812 KB Output is correct
42 Correct 58 ms 14664 KB Output is correct
43 Correct 65 ms 15920 KB Output is correct
44 Correct 68 ms 15884 KB Output is correct
45 Correct 62 ms 15904 KB Output is correct
46 Correct 62 ms 15812 KB Output is correct
47 Correct 5 ms 6484 KB Output is correct
48 Correct 5 ms 6484 KB Output is correct
49 Incorrect 4 ms 6484 KB Output isn't correct
50 Halted 0 ms 0 KB -