oj.uz

Submission #962633

# Submission time Handle Problem Language Result Execution time Memory
962633 2024-04-14T04:43:38 Z Warinchai Longest Trip (IOI23_longesttrip) C++17
40 / 100
 55 ms 700 KB 
#include "longesttrip.h"
#include<bits/stdc++.h>
using namespace std;
vector<int>longest_trip_3(int N){
    vector<int>ans;
    for(int i=0;i<N;i++)ans.push_back(i);
    return ans;
}
vector<int>longest_trip_2(int N){
    vector<int>ans;
    vector<int>tans;
    tans.push_back(0);
    for(int i=1;i<N;i++){
        if(are_connected({i-1},{i}))tans.push_back(i);
        else if(i!=N-1)tans.push_back(i+1),tans.push_back(i),i++;
        else ans.push_back(i);
    }
    for(auto x:tans)ans.push_back(x);
    return ans;
}
int vis[256];
int fnext(int x,int sz){
    if(sz==0)return -1;
    //cerr<<"fnext:"<<x<<" "<<sz<<"\n";
    int st=1,en=sz,ans=0;
    int id=-1;
    vector<int>ask;
    while(st<=en){
        int m=(st+en)/2;
        ask.clear();
        int cur=0;
        while(ask.size()<m){
            if(!vis[cur])ask.push_back(cur);
            cur++;
        }
        //cerr<<m<<" ask:";
        //for(auto x:ask)cerr<<x<<" ";
        //cerr<<"\n";
        if(are_connected({x},ask)){
            en=m-1;
            ans=m;
            id=cur-1;
        }else{
            st=m+1;
        }
    }
    return id;
}
vector<int>longest_trip_1(int N){
    for(int i=0;i<256;i++)vis[i]=0;
    vector<int>ans;
    ans.push_back(0);
    vis[0]=1;
    int cur=0,left=N-1;
    while(1){
        //cerr<<cur<<"\n";
        int x=fnext(cur,left);
        if(x!=-1){
            cur=x;
            left--;
            ans.push_back(cur);
            vis[cur]++;
        }else{
            break;
        }
    }
    if(ans.size()>=(N+1)/2)return ans;
    else{
        ans.clear();
        for(int i=0;i<N;i++)if(!vis[i])ans.push_back(i);
        return ans;
    }
    return ans;
}
vector<int> longest_trip(int N, int D)
{
    if(D==1)return longest_trip_1(N);
    else if(D==2)return longest_trip_2(N);
    else return longest_trip_3(N);
    //cerr<<"end of query\n";
    return {};
}

Compilation message

longesttrip.cpp: In function 'int fnext(int, int)':
longesttrip.cpp:32:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   32 |         while(ask.size()<m){
      |               ~~~~~~~~~~^~
longesttrip.cpp:25:20: warning: variable 'ans' set but not used [-Wunused-but-set-variable]
   25 |     int st=1,en=sz,ans=0;
      |                    ^~~
longesttrip.cpp: In function 'std::vector<int> longest_trip_1(int)':
longesttrip.cpp:67:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   67 |     if(ans.size()>=(N+1)/2)return ans;
      |        ~~~~~~~~~~^~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 11 ms 444 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 340 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 6 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 6 ms 432 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 4 ms 344 KB Output is correct
8 Correct 5 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 5 ms 600 KB Output is correct
12 Correct 6 ms 344 KB Output is correct
13 Correct 5 ms 600 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 12 ms 344 KB Output is correct
3 Correct 19 ms 344 KB Output is correct
4 Correct 37 ms 600 KB Output is correct
5 Correct 42 ms 440 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 11 ms 344 KB Output is correct
8 Correct 20 ms 344 KB Output is correct
9 Correct 27 ms 344 KB Output is correct
10 Correct 42 ms 700 KB Output is correct
11 Correct 44 ms 444 KB Output is correct
12 Correct 45 ms 440 KB Output is correct
13 Correct 47 ms 604 KB Output is correct
14 Correct 9 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Correct 13 ms 344 KB Output is correct
17 Correct 15 ms 344 KB Output is correct
18 Correct 20 ms 344 KB Output is correct
19 Correct 27 ms 684 KB Output is correct
20 Correct 28 ms 340 KB Output is correct
21 Correct 49 ms 448 KB Output is correct
22 Correct 48 ms 444 KB Output is correct
23 Correct 49 ms 444 KB Output is correct
24 Correct 44 ms 448 KB Output is correct
25 Correct 8 ms 344 KB Output is correct
26 Correct 8 ms 344 KB Output is correct
27 Correct 15 ms 596 KB Output is correct
28 Correct 13 ms 344 KB Output is correct
29 Correct 12 ms 344 KB Output is correct
30 Correct 23 ms 504 KB Output is correct
31 Correct 21 ms 432 KB Output is correct
32 Correct 17 ms 344 KB Output is correct
33 Correct 27 ms 344 KB Output is correct
34 Correct 28 ms 344 KB Output is correct
35 Correct 27 ms 344 KB Output is correct
36 Correct 43 ms 444 KB Output is correct
37 Correct 51 ms 692 KB Output is correct
38 Correct 43 ms 440 KB Output is correct
39 Correct 44 ms 444 KB Output is correct
40 Correct 44 ms 440 KB Output is correct
41 Correct 42 ms 696 KB Output is correct
42 Correct 44 ms 688 KB Output is correct
43 Correct 37 ms 444 KB Output is correct
44 Correct 42 ms 440 KB Output is correct
45 Correct 7 ms 344 KB Output is correct
46 Correct 7 ms 344 KB Output is correct
47 Correct 12 ms 344 KB Output is correct
48 Correct 13 ms 344 KB Output is correct
49 Correct 13 ms 344 KB Output is correct
50 Correct 22 ms 344 KB Output is correct
51 Correct 22 ms 436 KB Output is correct
52 Correct 22 ms 344 KB Output is correct
53 Correct 22 ms 344 KB Output is correct
54 Correct 23 ms 600 KB Output is correct
55 Correct 31 ms 344 KB Output is correct
56 Correct 51 ms 436 KB Output is correct
57 Correct 44 ms 440 KB Output is correct
58 Correct 41 ms 464 KB Output is correct
59 Correct 52 ms 680 KB Output is correct
60 Correct 51 ms 444 KB Output is correct
61 Correct 41 ms 696 KB Output is correct
62 Correct 51 ms 696 KB Output is correct
63 Correct 43 ms 444 KB Output is correct
64 Correct 55 ms 432 KB Output is correct

Subtask #4
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 10 ms 344 KB Output is correct
3 Correct 24 ms 344 KB Output is correct
4 Partially correct 30 ms 344 KB Output is partially correct
5 Partially correct 49 ms 444 KB Output is partially correct
6 Incorrect 0 ms 344 KB Incorrect
7 Halted 0 ms 0 KB -