oj.uz

Submission #1069306

# Submission time Handle Problem Language Result Execution time Memory
1069306 2024-08-21T19:08:10 Z hasan2006 Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 150 ms 22192 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

#define TL ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define rall(s) s.rbegin(),s.rend()
#define all(s) s.begin(),s.end()
#define pb push_back
#define se second
#define fi first
#define ll long long
#define ld long double
#define YES cout<<"YES\n"
#define Yes cout<<"Yes\n"
#define yes cout<<"yes\n"
#define NO cout<<"NO\n"
#define No cout<<"No\n"
#define no cout<<"no\n"


const int N = 2e5 + 9 , mod = 1e9 + 7;
ll a[N] ,  b[N] , dp[N];

//int press(string a){}
int construct(vector<vector<int>> v){
    ll i , j , l , r , s  = 0, f , n , m , x , y , k;
    n = v.size();

    vector<vector<int>>c(n);
    for(i = 0; i < n; i++)
        c[i].resize(n);
    for(i = 0; i < n; i++){
        if(b[i] != 0)
            continue;
        vector<pair<int,pair<int,int>>>vc;
        vector<int>v1 , v2 , v3;
        for(j = 0; j < n; j++)
            if(v[i][j] != 0)
                b[j] = 1 , v1.pb(j);
        l = r = 0;
        for(x = 0; x < v1.size(); x++)
            for(y = x + 1; y < v1.size(); y++){
                vc.pb({v[v1[x]][v1[y]] , {v1[x] , v1[y]}});
                if(v[v1[x]][v1[y]] == 2)
                    l = 1;
                if(v[v1[x]][v1[y]] == 3)
                    r = 1;
            }
        sort(all(vc));
        if(v1.size() == 1)
            continue;
        if((l == 1 && r == 1) || vc.front().fi == 0){
            return 0;
        }
        for(auto to : vc)
            if(to.fi == 1 && to.se.fi != to.se.se)
                b[to.se.fi] = b[to.se.se] = 2;
        set<int>st;
        for(auto to : v1){
            st.insert(to);
            if(b[to] == 1)
                v2.pb(to);
            else
                v3.pb(to);
        }
        f = -1;
        for(auto to : v3){
            if(f != -1)
                c[to][f] = c[f][to] = 1;
            f = to;
        }

        if(v2.size()){
            if(v3.size())
                v2.pb(v3.back());
           // if(v2.size() <= vc.back().fi){
           //     return 0;
           // }
            f = v2.back();
            for(auto to : v2)
                c[f][to] = c[to][f] = 1 , f = to;
            if(vc.back().fi == 3)
                c[v2[0]][v2[2]] = c[v2[2]][v2[0]] = 1;
        }
        for(auto to : v1){
            ll L = 0 ,R = 0 , s =0;
            for(j = 0; j < n ; j++)
                if(v[to][j] != 0){
                    if(st.find(j) == st.end())
                        return 0;
                    s++;
                    if(to == j)
                        continue;
                    if(v[to][j] == 2)
                        L = 1;
                    else if(v[to][j] == 3)
                        R = 1;
                    else {
                        if(b[to] == 1 || b[j] == 1)
                            return 0;
                    }
                }
         //   if((L > l) || (R > r) || s != v1.size())
         //       return 0;
        }
    }
/*    for(i = 0; i < n; i++){
        for(j = 0; j < n; j++)
            cout<<c[i][j]<<" ";
        cout<<"\n";
    }*/
    build(c);
    return 1;
}

/*
int main(){
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
}*/
// Author : حسن

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:42:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |         for(x = 0; x < v1.size(); x++)
      |                    ~~^~~~~~~~~~~
supertrees.cpp:43:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |             for(y = x + 1; y < v1.size(); y++){
      |                            ~~^~~~~~~~~~~
supertrees.cpp:87:16: warning: variable 'L' set but not used [-Wunused-but-set-variable]
   87 |             ll L = 0 ,R = 0 , s =0;
      |                ^
supertrees.cpp:87:23: warning: variable 'R' set but not used [-Wunused-but-set-variable]
   87 |             ll L = 0 ,R = 0 , s =0;
      |                       ^
supertrees.cpp:27:24: warning: unused variable 's' [-Wunused-variable]
   27 |     ll i , j , l , r , s  = 0, f , n , m , x , y , k;
      |                        ^
supertrees.cpp:27:40: warning: unused variable 'm' [-Wunused-variable]
   27 |     ll i , j , l , r , s  = 0, f , n , m , x , y , k;
      |                                        ^
supertrees.cpp:27:52: warning: unused variable 'k' [-Wunused-variable]
   27 |     ll i , j , l , r , s  = 0, f , n , m , x , y , k;
      |                                                    ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 6 ms 1324 KB Output is correct
7 Correct 150 ms 22160 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 6 ms 1324 KB Output is correct
7 Correct 150 ms 22160 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 112 ms 22044 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 67 ms 15300 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 40 ms 5804 KB Output is correct
21 Correct 121 ms 21972 KB Output is correct
22 Correct 127 ms 22008 KB Output is correct
23 Correct 140 ms 22192 KB Output is correct
24 Correct 140 ms 22044 KB Output is correct
25 Correct 52 ms 12316 KB Output is correct
26 Correct 51 ms 12116 KB Output is correct
27 Correct 135 ms 22168 KB Output is correct
28 Correct 115 ms 22160 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 420 KB Output is correct
4 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 30 ms 5784 KB Output is correct
5 Correct 118 ms 21972 KB Output is correct
6 Correct 119 ms 22096 KB Output is correct
7 Correct 141 ms 21980 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 29 ms 5876 KB Output is correct
10 Correct 133 ms 22140 KB Output is correct
11 Correct 122 ms 22104 KB Output is correct
12 Correct 139 ms 22040 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Incorrect 31 ms 5900 KB Too few ways to get from 0 to 24, should be 2 found 1
17 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 6 ms 1324 KB Output is correct
7 Correct 150 ms 22160 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 112 ms 22044 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 67 ms 15300 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 40 ms 5804 KB Output is correct
21 Correct 121 ms 21972 KB Output is correct
22 Correct 127 ms 22008 KB Output is correct
23 Correct 140 ms 22192 KB Output is correct
24 Correct 140 ms 22044 KB Output is correct
25 Correct 52 ms 12316 KB Output is correct
26 Correct 51 ms 12116 KB Output is correct
27 Correct 135 ms 22168 KB Output is correct
28 Correct 115 ms 22160 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 420 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 6 ms 1324 KB Output is correct
7 Correct 150 ms 22160 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1116 KB Output is correct
13 Correct 112 ms 22044 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 67 ms 15300 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 40 ms 5804 KB Output is correct
21 Correct 121 ms 21972 KB Output is correct
22 Correct 127 ms 22008 KB Output is correct
23 Correct 140 ms 22192 KB Output is correct
24 Correct 140 ms 22044 KB Output is correct
25 Correct 52 ms 12316 KB Output is correct
26 Correct 51 ms 12116 KB Output is correct
27 Correct 135 ms 22168 KB Output is correct
28 Correct 115 ms 22160 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 420 KB Output is correct
32 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -