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Submission #738692

# Submission time Handle Problem Language Result Execution time Memory
738692 2023-05-09T11:51:58 Z Huseyn123 Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 258 ms 24064 KB 
#include "supertrees.h"
#include <bits/stdc++.h>
#define MAX 300001
#define INF LLONG_MAX
#define MOD 1000000007
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ins insert
#define ff first
#define ss second
#define gett(x,m) get<m>(x)
#define all(a) a.begin(),a.end()
#define lb(a,b) lower_bound(all(a),b)
#define ub(a,b) upper_bound(all(a),b)
#define sortv(a) sort(all(a))
#define sorta(a,sz) sort(a,a+sz)
#define inputar(a,b){\
    for(int i=0;i<b;i++){\
        cin >> a[i];\
    }\
}
#define inputvec(a,b){\
    for(int i=0;i<b;i++){\
        ll num;\
        cin >> num;\
        a.pb(num);\
    }\
}
#define outputar(a,b){\
    for(int i=0;i<b;i++){\
        cout << a[i] << " ";\
    }\
    cout << "\n";\
}
#define outputvec(a){\
    for(auto x:a){\
        cout << x << " ";\
    }\
    cout << "\n";\
}
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef tuple<ll,ll,ll> tll;
typedef pair<ll,ll> pll;
typedef double db;
typedef long double ldb;
inline void USACO(string filename){
  freopen((filename+".in").c_str(),"r",stdin);
  freopen((filename+".out").c_str(),"w",stdout);
}
struct dsu{
    vector<ll> e;
    void init(int n){
        e.resize(n+1,-1);
    }
    int get(int x){
        if(e[x]<0){
            return x;
        }
        else{
            return e[x]=get(e[x]);
        }
    }
    int size(int x){
        return -e[get(x)];
    }
    bool same_set(int x,int y){
        return (get(x)==get(y));
    }
    bool unite(int x,int y){
        x=get(x);
        y=get(y);
        if(x==y){
            return false;
        }
        if(e[x]>e[y]){
            swap(x,y);
        }
        e[x]+=e[y];
        e[y]=x;
        return true;
    }
};
int construct(vector<vector<int>> p) {
	int n = p.size();
	dsu d;
	d.init(n);
	vector<vector<int>> answer;
	answer.resize(n,vector<int>(n,0));
	for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(p[i][j]==1){
                d.unite(i,j);
            }
            if(p[i][j]==3){
                return 0;
            }
        }
	}
	for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(d.same_set(i,j) && p[i][j]!=1){
                //cout << 1 << "\n";
                return 0;
            }
        }
	}
	dsu d2;
	dsu d3;
	d2.init(n);
	d3.init(n);
	for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(p[i][j]==2){
                d2.unite(d.get(i),d.get(j));
            }
            else if(p[i][j]==3){
                d3.unite(d.get(i),d.get(j));
            }
        }
	}
	for(int i=0;i<n;i++){
        if(d2.size(i)==2){
            //cout << 2 << "\n";
            return 0;
        }
	}
	for(int i=0;i<n;i++){
	    if(d3.size(i)==2 || d3.size(i)==3){
            //cout << 3 << "\n";
            return 0;
	    }
	}
	for(int i=0;i<n;i++){
	    for(int j=0;j<n;j++){
	        if(p[i][j]==0 && (d2.same_set(i,j) || d3.same_set(i,j))){
	            return 0;
	        }
            if(d2.same_set(i,j) && d3.same_set(i,j) && i!=j){
                //cout << 4 << "\n";
                return 0;
            }
	    }
	}
	set<ll> st;
	for(int i=0;i<n;i++){
        st.ins(i);
	}
	for(int i=0;i<n;i++){
	    if(st.find(i)==st.end()){
            continue;
	    }
	    vector<int> c;
	    for(auto x:st){
            if(d.same_set(i,x)){
                c.pb(x);
            }
	    }
	    for(int i=1;i<c.size();i++){
	        answer[c[i-1]][c[i]]=1;
	        answer[c[i]][c[i-1]]=1;
	    }
	    for(auto x:c){
            st.erase(x);
	    }
	}
	st.clear();
	for(int i=0;i<n;i++){
        st.ins(i);
	}
	for(int i=0;i<n;i++){
	    if(st.find(i)==st.end()){
            continue;
	    }
	    set<int> e;
	    vector<int> c;
	    for(auto x:st){
            if(d2.same_set(i,x)){
                e.ins(d.get(x));
            }
	    }
	    for(auto x:e){
            c.pb(x);
	    }
	    if(c.size()>1){
	        for(int i=1;i<c.size();i++){
                answer[c[i-1]][c[i]]=1;
                answer[c[i]][c[i-1]]=1;
            }
            answer[c[0]][c[c.size()-1]]=1;
            answer[c[c.size()-1]][c[0]]=1;
	    }
	    for(auto x:c){
            st.erase(x);
	    }
	}
	st.clear();
	for(int i=0;i<n;i++){
        st.ins(i);
	}
	for(int i=0;i<n;i++){
	    if(st.find(i)==st.end()){
            continue;
	    }
	    set<int> e;
	    vector<int> c;
	    for(auto x:st){
            if(d3.same_set(i,x)){
                e.ins(d.get(x));
            }
	    }
	    for(auto x:e){
            c.pb(x);
	    }
	    if(c.size()>1){
	        for(int i=1;i<c.size();i++){
                answer[c[i-1]][c[i]]=1;
                answer[c[i]][c[i-1]]=1;
            }
            answer[c[0]][c[c.size()-1]]=1;
            answer[c[c.size()-1]][c[0]]=1;
            answer[c[1]][c[c.size()-1]]=1;
            answer[c[c.size()-1]][c[1]]=1;
	    }
	    for(auto x:c){
            st.erase(x);
	    }
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:161:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  161 |      for(int i=1;i<c.size();i++){
      |                  ~^~~~~~~~~
supertrees.cpp:188:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  188 |          for(int i=1;i<c.size();i++){
      |                      ~^~~~~~~~~
supertrees.cpp:218:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  218 |          for(int i=1;i<c.size();i++){
      |                      ~^~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 9 ms 1184 KB Output is correct
7 Correct 201 ms 24012 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 9 ms 1184 KB Output is correct
7 Correct 201 ms 24012 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 9 ms 1212 KB Output is correct
13 Correct 193 ms 23936 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 800 KB Output is correct
17 Correct 94 ms 14028 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 52 ms 6240 KB Output is correct
21 Correct 214 ms 24060 KB Output is correct
22 Correct 207 ms 24048 KB Output is correct
23 Correct 226 ms 24064 KB Output is correct
24 Correct 216 ms 24012 KB Output is correct
25 Correct 77 ms 14028 KB Output is correct
26 Correct 76 ms 14084 KB Output is correct
27 Correct 257 ms 24048 KB Output is correct
28 Correct 193 ms 24052 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 300 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 8 ms 1256 KB Output is correct
9 Correct 253 ms 23924 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 9 ms 1236 KB Output is correct
13 Correct 211 ms 24028 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 852 KB Output is correct
17 Correct 91 ms 14112 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 52 ms 6216 KB Output is correct
22 Correct 205 ms 23932 KB Output is correct
23 Correct 213 ms 24020 KB Output is correct
24 Correct 206 ms 24028 KB Output is correct
25 Correct 83 ms 14200 KB Output is correct
26 Correct 79 ms 14080 KB Output is correct
27 Correct 195 ms 24000 KB Output is correct
28 Correct 213 ms 23924 KB Output is correct
29 Correct 77 ms 14072 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 53 ms 6248 KB Output is correct
5 Correct 200 ms 24052 KB Output is correct
6 Correct 203 ms 24020 KB Output is correct
7 Correct 258 ms 24008 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 48 ms 6224 KB Output is correct
10 Correct 230 ms 23976 KB Output is correct
11 Correct 188 ms 24044 KB Output is correct
12 Correct 209 ms 23928 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 53 ms 6212 KB Output is correct
17 Correct 194 ms 23820 KB Output is correct
18 Correct 202 ms 24052 KB Output is correct
19 Correct 201 ms 23956 KB Output is correct
20 Correct 204 ms 23972 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 9 ms 1184 KB Output is correct
7 Correct 201 ms 24012 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 9 ms 1212 KB Output is correct
13 Correct 193 ms 23936 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 800 KB Output is correct
17 Correct 94 ms 14028 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 52 ms 6240 KB Output is correct
21 Correct 214 ms 24060 KB Output is correct
22 Correct 207 ms 24048 KB Output is correct
23 Correct 226 ms 24064 KB Output is correct
24 Correct 216 ms 24012 KB Output is correct
25 Correct 77 ms 14028 KB Output is correct
26 Correct 76 ms 14084 KB Output is correct
27 Correct 257 ms 24048 KB Output is correct
28 Correct 193 ms 24052 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 300 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 300 KB Output is correct
36 Correct 8 ms 1256 KB Output is correct
37 Correct 253 ms 23924 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 300 KB Output is correct
40 Correct 9 ms 1236 KB Output is correct
41 Correct 211 ms 24028 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 852 KB Output is correct
45 Correct 91 ms 14112 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 52 ms 6216 KB Output is correct
50 Correct 205 ms 23932 KB Output is correct
51 Correct 213 ms 24020 KB Output is correct
52 Correct 206 ms 24028 KB Output is correct
53 Correct 83 ms 14200 KB Output is correct
54 Correct 79 ms 14080 KB Output is correct
55 Correct 195 ms 24000 KB Output is correct
56 Correct 213 ms 23924 KB Output is correct
57 Correct 77 ms 14072 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 296 KB Output is correct
60 Correct 4 ms 852 KB Output is correct
61 Correct 82 ms 14068 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 1 ms 212 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 66 ms 6284 KB Output is correct
66 Correct 74 ms 13988 KB Output is correct
67 Correct 74 ms 14068 KB Output is correct
68 Correct 85 ms 14084 KB Output is correct
69 Correct 83 ms 14068 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 296 KB Output is correct
6 Correct 9 ms 1184 KB Output is correct
7 Correct 201 ms 24012 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 9 ms 1212 KB Output is correct
13 Correct 193 ms 23936 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 5 ms 800 KB Output is correct
17 Correct 94 ms 14028 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 52 ms 6240 KB Output is correct
21 Correct 214 ms 24060 KB Output is correct
22 Correct 207 ms 24048 KB Output is correct
23 Correct 226 ms 24064 KB Output is correct
24 Correct 216 ms 24012 KB Output is correct
25 Correct 77 ms 14028 KB Output is correct
26 Correct 76 ms 14084 KB Output is correct
27 Correct 257 ms 24048 KB Output is correct
28 Correct 193 ms 24052 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 300 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 300 KB Output is correct
36 Correct 8 ms 1256 KB Output is correct
37 Correct 253 ms 23924 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 300 KB Output is correct
40 Correct 9 ms 1236 KB Output is correct
41 Correct 211 ms 24028 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 5 ms 852 KB Output is correct
45 Correct 91 ms 14112 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 52 ms 6216 KB Output is correct
50 Correct 205 ms 23932 KB Output is correct
51 Correct 213 ms 24020 KB Output is correct
52 Correct 206 ms 24028 KB Output is correct
53 Correct 83 ms 14200 KB Output is correct
54 Correct 79 ms 14080 KB Output is correct
55 Correct 195 ms 24000 KB Output is correct
56 Correct 213 ms 23924 KB Output is correct
57 Correct 77 ms 14072 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 1 ms 212 KB Output is correct
61 Correct 53 ms 6248 KB Output is correct
62 Correct 200 ms 24052 KB Output is correct
63 Correct 203 ms 24020 KB Output is correct
64 Correct 258 ms 24008 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 48 ms 6224 KB Output is correct
67 Correct 230 ms 23976 KB Output is correct
68 Correct 188 ms 24044 KB Output is correct
69 Correct 209 ms 23928 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 1 ms 212 KB Output is correct
72 Correct 1 ms 212 KB Output is correct
73 Correct 53 ms 6212 KB Output is correct
74 Correct 194 ms 23820 KB Output is correct
75 Correct 202 ms 24052 KB Output is correct
76 Correct 201 ms 23956 KB Output is correct
77 Correct 204 ms 23972 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 1 ms 296 KB Output is correct
80 Correct 4 ms 852 KB Output is correct
81 Correct 82 ms 14068 KB Output is correct
82 Correct 1 ms 212 KB Output is correct
83 Correct 1 ms 212 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 66 ms 6284 KB Output is correct
86 Correct 74 ms 13988 KB Output is correct
87 Correct 74 ms 14068 KB Output is correct
88 Correct 85 ms 14084 KB Output is correct
89 Correct 83 ms 14068 KB Output is correct
90 Correct 0 ms 212 KB Output is correct
91 Correct 1 ms 212 KB Output is correct
92 Correct 4 ms 852 KB Output is correct
93 Correct 74 ms 14076 KB Output is correct
94 Correct 1 ms 304 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 1 ms 212 KB Output is correct
97 Correct 18 ms 3700 KB Output is correct
98 Correct 70 ms 14028 KB Output is correct
99 Correct 72 ms 14068 KB Output is correct
100 Correct 76 ms 13996 KB Output is correct
101 Correct 69 ms 14068 KB Output is correct
102 Correct 73 ms 14072 KB Output is correct
103 Correct 68 ms 14080 KB Output is correct
104 Correct 72 ms 14084 KB Output is correct
105 Correct 78 ms 14064 KB Output is correct