oj.uz

Submission #1038246

# Submission time Handle Problem Language Result Execution time Memory
1038246 2024-07-29T14:45:06 Z aymanrs Longest Trip (IOI23_longesttrip) C++17
70 / 100
 51 ms 860 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
int g[257][257] = {{0}};
bool isg(int a, int b){
    if(g[a][b]) {
        return g[a][b] == 1;
    }
    if(are_connected({a},{b})){
        g[a][b]=g[b][a]=1;
        return true;
    }
    g[a][b]=g[b][a]=-1;
    return false;
}
bool arc(const vector<int>& a, const vector<int>& b){
    if(a.empty()||b.empty()) return false;
    bool at0=false;
    for(int i : a) for(int j : b) {
        if(g[i][j]==1) return true;
        else if(!g[i][j]) at0=true;
    }
    if(!at0) return false;
    return are_connected(a, b);
}
pair<vector<int>,vector<int>> fl(const vector<int>& V){
    if(V.size()<=1) return {V, {}};
    int i, j;
    vector<int> a;a.push_back(V[0]);
    for(i = 1;i < V.size();i++){
        if(isg(a.back(), V[i])){
            a.push_back(V[i]);
        } else {
            i = V[i];
            j = a.back();
            break;
        }
    }
    if(a.size() == V.size()) return {a, {}};
    vector<int> b, c;
    a.clear();
    for(int k : V){
        if(k==i||k==j) continue;
        if(!isg(k,j)) a.push_back(k);
        else if(!isg(k,i)) c.push_back(k);
        else {
            b.push_back(k);
        }
    }
    if(b.empty()){
        if(!arc(a,c)) {
            a.push_back(i);
            c.push_back(j);
            return {a,c};
        }
        int l=0,r=c.size()-1, ll=0,rr=a.size()-1;
        while(l<r||ll<rr){
            if(r-l > rr-ll){
                int m = r+l>>1;
                if(arc(vector<int>{c.begin()+l,c.begin()+m+1}, vector<int>{a.begin()+ll,a.begin()+rr+1})){
                    r=m;
                } else l = m+1;
            } else {
                int m = ll+rr>>1;
                if(arc(vector<int>{c.begin()+l,c.begin()+r+1}, vector<int>{a.begin()+ll,a.begin()+m+1})){
                    rr=m;
                } else ll = m+1;
            }
        }
        a.push_back(i);swap(a[ll], a.back());
        c.push_back(j);swap(c[l], c[0]);
        for(int k : c) a.push_back(k);
        return {a, {}};
    }
    auto L = fl(b);
    if(L.second.empty()){
        a.push_back(i);
        for(int k : L.first) a.push_back(k);
        a.push_back(j);
        for(int k : c) a.push_back(k);
        return {a, {}};
    } else {
        if(a.empty()){
            L.first.push_back(i);
            for(int k : L.second) L.first.push_back(k);
            L.first.push_back(j);
            for(int k : c) L.first.push_back(k);
            return {L.first, {}};
        }
        if(isg(a[0], L.first[0])){
            a.push_back(i);
            swap(a.back(), a[0]);
            for(int k : L.first) a.push_back(k);
            for(int k : a) L.second.push_back(k);
            L.second.push_back(j);
            for(int k : c) L.second.push_back(k);
            return {L.second, {}};
        } else {
            a.push_back(i);
            swap(a.back(), a[0]);
            for(int k : L.second) a.push_back(k);
            for(int k : a) L.first.push_back(k);
            L.first.push_back(j);
            for(int k : c) L.first.push_back(k);
            return {L.first, {}};
        }
    }

}
std::vector<int> longest_trip(int N, int D)
{
    vector<int> V;
    for(int i = 0;i < N;i++) {
        V.push_back(i);
        for(int j = 0;j < N;j++) g[i][j] = 0;
    }
    auto L = fl(V);
    if(L.first.size()>=L.second.size()) return L.first;
    return L.second;
}

Compilation message

longesttrip.cpp: In function 'std::pair<std::vector<int>, std::vector<int> > fl(const std::vector<int>&)':
longesttrip.cpp:32:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for(i = 1;i < V.size();i++){
      |               ~~^~~~~~~~~~
longesttrip.cpp:61:26: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   61 |                 int m = r+l>>1;
      |                         ~^~
longesttrip.cpp:66:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   66 |                 int m = ll+rr>>1;
      |                         ~~^~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 7 ms 600 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 7 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 4 ms 600 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 7 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 5 ms 600 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 11 ms 344 KB Output is correct
8 Correct 13 ms 344 KB Output is correct
9 Correct 13 ms 344 KB Output is correct
10 Correct 10 ms 600 KB Output is correct
11 Correct 11 ms 856 KB Output is correct
12 Correct 19 ms 600 KB Output is correct
13 Correct 14 ms 600 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 600 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 14 ms 344 KB Output is correct
8 Correct 13 ms 344 KB Output is correct
9 Correct 13 ms 344 KB Output is correct
10 Correct 10 ms 600 KB Output is correct
11 Correct 12 ms 600 KB Output is correct
12 Correct 19 ms 704 KB Output is correct
13 Correct 26 ms 708 KB Output is correct
14 Correct 6 ms 344 KB Output is correct
15 Correct 8 ms 344 KB Output is correct
16 Correct 13 ms 344 KB Output is correct
17 Correct 19 ms 344 KB Output is correct
18 Correct 16 ms 344 KB Output is correct
19 Correct 22 ms 344 KB Output is correct
20 Correct 14 ms 344 KB Output is correct
21 Correct 51 ms 704 KB Output is correct
22 Correct 37 ms 704 KB Output is correct
23 Correct 30 ms 856 KB Output is correct
24 Correct 34 ms 860 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 10 ms 344 KB Output is correct
27 Correct 7 ms 344 KB Output is correct
28 Correct 15 ms 344 KB Output is correct
29 Correct 11 ms 344 KB Output is correct
30 Correct 11 ms 340 KB Output is correct
31 Correct 7 ms 344 KB Output is correct
32 Correct 7 ms 344 KB Output is correct
33 Correct 10 ms 344 KB Output is correct
34 Correct 10 ms 344 KB Output is correct
35 Correct 9 ms 344 KB Output is correct
36 Correct 12 ms 600 KB Output is correct
37 Correct 9 ms 600 KB Output is correct
38 Correct 11 ms 600 KB Output is correct
39 Correct 7 ms 600 KB Output is correct
40 Correct 7 ms 600 KB Output is correct
41 Correct 8 ms 600 KB Output is correct
42 Correct 11 ms 600 KB Output is correct
43 Correct 8 ms 600 KB Output is correct
44 Correct 7 ms 600 KB Output is correct
45 Correct 6 ms 344 KB Output is correct
46 Correct 5 ms 344 KB Output is correct
47 Correct 12 ms 344 KB Output is correct
48 Correct 9 ms 344 KB Output is correct
49 Correct 9 ms 344 KB Output is correct
50 Correct 12 ms 344 KB Output is correct
51 Correct 8 ms 344 KB Output is correct
52 Correct 6 ms 344 KB Output is correct
53 Correct 11 ms 344 KB Output is correct
54 Correct 15 ms 344 KB Output is correct
55 Correct 12 ms 344 KB Output is correct
56 Correct 8 ms 600 KB Output is correct
57 Correct 11 ms 600 KB Output is correct
58 Correct 5 ms 600 KB Output is correct
59 Correct 8 ms 600 KB Output is correct
60 Correct 8 ms 708 KB Output is correct
61 Correct 8 ms 600 KB Output is correct
62 Correct 7 ms 600 KB Output is correct
63 Correct 6 ms 600 KB Output is correct
64 Correct 7 ms 700 KB Output is correct

Subtask #4
30.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 7 ms 344 KB Output is correct
4 Correct 6 ms 344 KB Output is correct
5 Correct 5 ms 600 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 13 ms 344 KB Output is correct
8 Correct 15 ms 344 KB Output is correct
9 Partially correct 13 ms 344 KB Output is partially correct
10 Partially correct 12 ms 704 KB Output is partially correct
11 Partially correct 13 ms 600 KB Output is partially correct
12 Partially correct 15 ms 856 KB Output is partially correct
13 Partially correct 23 ms 700 KB Output is partially correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 6 ms 344 KB Output is correct
16 Correct 7 ms 344 KB Output is correct
17 Correct 13 ms 344 KB Output is correct
18 Correct 14 ms 596 KB Output is correct
19 Partially correct 20 ms 344 KB Output is partially correct
20 Partially correct 20 ms 544 KB Output is partially correct
21 Correct 4 ms 340 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 8 ms 344 KB Output is correct
24 Correct 12 ms 344 KB Output is correct
25 Correct 8 ms 344 KB Output is correct
26 Correct 14 ms 344 KB Output is correct
27 Correct 7 ms 344 KB Output is correct
28 Correct 7 ms 344 KB Output is correct
29 Correct 10 ms 344 KB Output is correct
30 Correct 9 ms 344 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 6 ms 344 KB Output is correct
33 Correct 9 ms 344 KB Output is correct
34 Correct 8 ms 344 KB Output is correct
35 Correct 8 ms 344 KB Output is correct
36 Correct 9 ms 344 KB Output is correct
37 Correct 10 ms 344 KB Output is correct
38 Correct 6 ms 344 KB Output is correct
39 Correct 8 ms 344 KB Output is correct
40 Correct 13 ms 344 KB Output is correct
41 Correct 11 ms 344 KB Output is correct
42 Correct 9 ms 344 KB Output is correct
43 Partially correct 36 ms 704 KB Output is partially correct
44 Partially correct 22 ms 852 KB Output is partially correct
45 Partially correct 28 ms 684 KB Output is partially correct
46 Partially correct 38 ms 856 KB Output is partially correct
47 Partially correct 12 ms 600 KB Output is partially correct
48 Partially correct 7 ms 600 KB Output is partially correct
49 Partially correct 8 ms 600 KB Output is partially correct
50 Partially correct 7 ms 600 KB Output is partially correct
51 Partially correct 8 ms 600 KB Output is partially correct
52 Correct 7 ms 600 KB Output is correct
53 Correct 5 ms 600 KB Output is correct
54 Correct 7 ms 600 KB Output is correct
55 Correct 7 ms 600 KB Output is correct
56 Partially correct 11 ms 600 KB Output is partially correct
57 Partially correct 7 ms 600 KB Output is partially correct
58 Partially correct 6 ms 600 KB Output is partially correct
59 Partially correct 6 ms 600 KB Output is partially correct
60 Correct 7 ms 600 KB Output is correct
61 Correct 7 ms 600 KB Output is correct
62 Partially correct 11 ms 600 KB Output is partially correct
63 Partially correct 9 ms 600 KB Output is partially correct
64 Partially correct 7 ms 600 KB Output is partially correct
65 Partially correct 7 ms 600 KB Output is partially correct
66 Partially correct 7 ms 600 KB Output is partially correct
67 Partially correct 8 ms 600 KB Output is partially correct
68 Correct 8 ms 856 KB Output is correct
69 Partially correct 8 ms 600 KB Output is partially correct
70 Partially correct 6 ms 600 KB Output is partially correct
71 Partially correct 9 ms 704 KB Output is partially correct
72 Partially correct 6 ms 600 KB Output is partially correct
73 Partially correct 5 ms 600 KB Output is partially correct
74 Partially correct 8 ms 600 KB Output is partially correct
75 Correct 7 ms 600 KB Output is correct
76 Correct 7 ms 600 KB Output is correct
77 Partially correct 8 ms 704 KB Output is partially correct
78 Partially correct 10 ms 600 KB Output is partially correct
79 Partially correct 11 ms 600 KB Output is partially correct
80 Partially correct 7 ms 600 KB Output is partially correct
81 Correct 10 ms 600 KB Output is correct
82 Correct 7 ms 600 KB Output is correct