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답안 #962870

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
962870 2024-04-14T09:12:18 Z Warinchai 가장 긴 여행 (IOI23_longesttrip) C++17
15 / 100
 54 ms 760 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;
}
pair<int,int> fconnection(vector<int>comp1,vector<int>comp2){
    int sz=comp1.size();
    //cerr<<"fnext:"<<x<<" "<<sz<<"\n";
    int st=0,en=sz-1;
    int ans1=-1,ans2=-1;
    int id1=-1;
    vector<int>ask;
    while(st<=en){
        int m=(st+en)/2;
        ask.clear();
        for(int i=0;i<=m;i++)ask.push_back(comp1[i]);
        if(are_connected(ask,comp2)){
            en=m-1;
            ans1=comp1[m];
            id1=m;
        }else{
            st=m+1;
        }
    }
    vector<int>temp;
    for(int i=0;i<=id1;i++)temp.push_back(comp1[i]);
    st=0,en=comp2.size()-1;
    while(st<=en){
        int m=(st+en)/2;
        ask.clear();
        for(int i=0;i<=m;i++)ask.push_back(comp2[i]);
        if(are_connected(ask,temp)){
            en=m-1;
            ans2=comp2[m];
        }else{
            st=m+1;
        }
    }
    return {ans1,ans2};
}
pair<int,int> fincom(int x,vector<int>ans){
    int sz=ans.size();
    //cerr<<"fnext:"<<x<<" "<<sz<<"\n";
    int st=0,en=sz-1;
    int id=-1,pos=-1;
    vector<int>ask;
    while(st<=en){
        int m=(st+en)/2;
        ask.clear();
        for(int i=0;i<=m;i++)ask.push_back(ans[i]);
        if(are_connected({x},ask)){
            en=m-1;
            id=ans[m];
            pos=m;
        }else{
            st=m+1;
        }
    }
    return {id,pos};
}
int vis2[256];
vector<int>longest_trip_1(int N){
    for(int i=0;i<256;i++)vis[i]=0,vis2[i]=0;
    vector<int>ans;
    vector<int>rans;
    vector<int>ians;
    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;
        }
    }
    for(int i=0;i<N;i++)if(!vis[i])ians.push_back(i);
    if(ans.size()==N){
        //assert(0);
        return ans;
    }
    int check=are_connected(ans,ians);
    if(!check){
        //assert(0);
        return ans.size()>ians.size()?ans:ians;
    }
    int outcom=ians[0];
    auto x=fincom(outcom,ans);
    for(int i=ians.size()-1;i>=0;i--)rans.push_back(ians[i]);
    assert(rans.size()==ians.size());
    assert(x.second>=0&&x.second<ans.size());
    for(int i=x.second;i<ans.size();i++)rans.push_back(ans[i]);
    for(int i=0;i<x.second;i++)rans.push_back(ans[i]);
    for(int i=1;i<rans.size();i++)assert(are_connected({rans[i]},{rans[i-1]}));
    assert(ians.size()+ans.size()==N);
    //assert(rans.size()==N);
    return rans;
    /*
    vector<int>comp1,comp2;
    /*for(int i=0;i<N;i++){
        if(vis[i]||i==outcom)continue;
        if(!(are_connected({i},{outcom})))comp1.push_back(i);
        /*if(i==outcom)comp2.push_back(i);
        else if((are_connected({i},{outcom})))comp2.push_back(i);
        else comp1.push_back(i);
    }
    auto connection=fconnection(comp1,comp2);
    for(auto x:comp1)if(x!=connection.first)rans.push_back(x);
    rans.push_back(connection.first);
    rans.push_back(connection.second);
    for(auto x:comp2)if(x!=connection.second)rans.push_back(x);
    for(int i=1;i<comp1.size();i++)assert(are_connected({comp1[i]},{comp1[i-1]}));
    //for(int i=1;i<comp2.size();i++)assert(are_connected({comp2[i]},{comp2[i-1]}));
    return rans;*/
}
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:148:5: warning: "/*" within comment [-Wcomment]
  148 |     /*for(int i=0;i<N;i++){
      |      
longesttrip.cpp:151:9: warning: "/*" within comment [-Wcomment]
  151 |         /*if(i==outcom)comp2.push_back(i);
      |          
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:126:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  126 |     if(ans.size()==N){
      |        ~~~~~~~~~~^~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from longesttrip.cpp:2:
longesttrip.cpp:139:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  139 |     assert(x.second>=0&&x.second<ans.size());
      |                         ~~~~~~~~^~~~~~~~~~~
longesttrip.cpp:140:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  140 |     for(int i=x.second;i<ans.size();i++)rans.push_back(ans[i]);
      |                        ~^~~~~~~~~~~
longesttrip.cpp:142:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  142 |     for(int i=1;i<rans.size();i++)assert(are_connected({rans[i]},{rans[i-1]}));
      |                 ~^~~~~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from longesttrip.cpp:2:
longesttrip.cpp:143:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  143 |     assert(ians.size()+ans.size()==N);
      |            ~~~~~~~~~~~~~~~~~~~~~~^~~

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 11 ms 608 KB Output is correct

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 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 1 ms 340 KB Output is correct
5 Correct 1 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 6 ms 344 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 5 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct

Subtask #3
0.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 12 ms 500 KB Output is correct
3 Correct 19 ms 344 KB Output is correct
4 Correct 30 ms 344 KB Output is correct
5 Correct 41 ms 696 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 13 ms 344 KB Output is correct
8 Correct 21 ms 344 KB Output is correct
9 Correct 28 ms 344 KB Output is correct
10 Correct 46 ms 696 KB Output is correct
11 Correct 48 ms 448 KB Output is correct
12 Correct 47 ms 696 KB Output is correct
13 Correct 38 ms 444 KB Output is correct
14 Correct 8 ms 344 KB Output is correct
15 Correct 8 ms 344 KB Output is correct
16 Correct 21 ms 344 KB Output is correct
17 Correct 19 ms 344 KB Output is correct
18 Correct 25 ms 344 KB Output is correct
19 Correct 35 ms 436 KB Output is correct
20 Correct 32 ms 760 KB Output is correct
21 Correct 45 ms 448 KB Output is correct
22 Correct 48 ms 600 KB Output is correct
23 Correct 49 ms 444 KB Output is correct
24 Correct 49 ms 444 KB Output is correct
25 Correct 9 ms 344 KB Output is correct
26 Correct 10 ms 344 KB Output is correct
27 Correct 13 ms 344 KB Output is correct
28 Correct 11 ms 344 KB Output is correct
29 Correct 14 ms 344 KB Output is correct
30 Correct 27 ms 344 KB Output is correct
31 Correct 18 ms 440 KB Output is correct
32 Correct 17 ms 344 KB Output is correct
33 Correct 25 ms 344 KB Output is correct
34 Correct 33 ms 344 KB Output is correct
35 Correct 23 ms 344 KB Output is correct
36 Correct 54 ms 448 KB Output is correct
37 Correct 46 ms 448 KB Output is correct
38 Correct 48 ms 452 KB Output is correct
39 Correct 45 ms 448 KB Output is correct
40 Correct 40 ms 704 KB Output is correct
41 Correct 40 ms 700 KB Output is correct
42 Correct 42 ms 696 KB Output is correct
43 Correct 45 ms 444 KB Output is correct
44 Correct 40 ms 448 KB Output is correct
45 Correct 12 ms 344 KB Output is correct
46 Runtime error 1 ms 600 KB Execution killed with signal 6
47 Halted 0 ms 0 KB -

Subtask #4
0.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 10 ms 344 KB Output is correct
3 Correct 22 ms 344 KB Output is correct
4 Partially correct 31 ms 344 KB Output is partially correct
5 Partially correct 47 ms 700 KB Output is partially correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 11 ms 344 KB Output is correct
8 Correct 19 ms 344 KB Output is correct
9 Partially correct 27 ms 344 KB Output is partially correct
10 Partially correct 49 ms 700 KB Output is partially correct
11 Partially correct 42 ms 444 KB Output is partially correct
12 Partially correct 46 ms 444 KB Output is partially correct
13 Partially correct 45 ms 444 KB Output is partially correct
14 Correct 9 ms 344 KB Output is correct
15 Correct 9 ms 540 KB Output is correct
16 Correct 16 ms 344 KB Output is correct
17 Correct 17 ms 344 KB Output is correct
18 Correct 25 ms 344 KB Output is correct
19 Partially correct 27 ms 600 KB Output is partially correct
20 Partially correct 34 ms 344 KB Output is partially correct
21 Correct 8 ms 344 KB Output is correct
22 Correct 10 ms 344 KB Output is correct
23 Correct 15 ms 344 KB Output is correct
24 Correct 10 ms 344 KB Output is correct
25 Correct 10 ms 344 KB Output is correct
26 Correct 22 ms 344 KB Output is correct
27 Correct 24 ms 504 KB Output is correct
28 Correct 15 ms 344 KB Output is correct
29 Partially correct 25 ms 344 KB Output is partially correct
30 Partially correct 32 ms 600 KB Output is partially correct
31 Partially correct 26 ms 344 KB Output is partially correct
32 Correct 11 ms 344 KB Output is correct
33 Runtime error 1 ms 600 KB Execution killed with signal 6
34 Halted 0 ms 0 KB -