oj.uz

Submission #442002

# Submission time Handle Problem Language Result Execution time Memory
442002 2021-07-06T17:22:03 Z julian33 Connecting Supertrees (IOI20_supertrees) C++14
96 / 100
 273 ms 26220 KB 
#include <bits/stdc++.h>
#include "supertrees.h"

using namespace std;

#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
    cerr<<vars<<" = ";
    string delim="";
    (...,(cerr<<delim<<values,delim=", "));
    cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif

#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);} 

// void build(vector<vector<int>> b){
//     int n=sz(b); 
//     for(int i=0;i<n;i++){
//         for(int j=0;j<n;j++){
//             cout<<b[i][j]<<" ";
//         }
//         cout<<"\n";
//     }
// }

const int mxN=1e3+5;

int uf[mxN],seen[mxN];
vector<int> component[mxN];
vector<vector<int>> g;

int find(int x){return uf[x]<0?x:uf[x]=find(uf[x]);}
bool same(int x,int y){return find(x)==find(y);}
void unite(int x,int y){
    x=find(x); y=find(y);
    if(x==y)
        return;
    if(uf[x]>uf[y])
        swap(x,y);
    uf[x]+=uf[y]; uf[y]=x;
}

int construct(vector<vector<int>> p){
    g=p;
    memset(uf,-1,sizeof(uf));
    int n=sz(p);
    vector<vector<int>> b;
    b.resize(n);
    for(auto &u:b)
        u.resize(n);
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(g[i][j]){
                unite(i,j);
            }
        }
    }
    for(int i=0;i<n;i++){
        component[find(i)].pb(i);
        for(int j=0;j<n;j++){
            if(!g[i][j] && same(i,j))
                return 0;
        }
    }
    for(int i=0;i<n;i++){
        if(sz(component[i])<=1)
            continue;
        vector<vector<int>> line; vector<int> ring; vector<int> triple; vector<int> single;
        int twocnt=0; int cnt=0;
        for(int &j:component[i]){
            if(seen[j]){
                single.pb(j);
                continue;
            }
            int three=1; int has=0;
            vector<int> one={j};
            for(int k=0;k<n;k++){
                if(g[j][k]==1 && j!=k){
                    one.pb(k);
                    seen[k]=1;
                }
                twocnt+=(g[j][k]==2);
                if((g[j][k]==1 || g[j][k]==2) && j!=k){
                    three=0;
                }
            }
            if(sz(one)==1)
                ring.pb(j);
            else
                line.pb(one);
            if(three)
                triple.pb(j);
            else
                single.pb(j);
            cnt+=has;
        }
        if(cnt && twocnt)
            return 0;
        if(cnt && sz(triple)<4)
            return 0;
        if(sz(triple)){
            for(int j=0;j<sz(single)-1;j++){
                b[single[j]][single[j+1]]=b[single[j+1]][single[j]]=1;
            }
            for(int j=0;j<sz(triple)-1;j++){
                b[triple[j]][triple[j+1]]=b[triple[j+1]][triple[j]]=1;
            }
            b[triple[0]][triple.back()]=b[triple.back()][triple[0]]=1;
            b[triple[0]][triple[sz(triple)-2]]=b[triple[sz(triple)-2]][triple[0]]=1;
            if(sz(single)){
                b[single[0]][triple.back()]=b[triple.back()][single[0]]=1;
            }
            continue;
        }
        if(sz(line)==0){
            if(sz(ring)==2)
                return 0;
            for(int j=0;j<sz(ring);j++){
                b[ring[j]][ring[(j+1)%sz(ring)]]=b[ring[(j+1)%sz(ring)]][ring[j]]=1;
            }
        } else{
            for(int j=0;j<sz(ring)-1;j++){
                b[ring[j]][ring[j+1]]=b[ring[j+1]][ring[j]]=1;
            }
            for(auto u:line){
                for(int j=0;j<sz(u)-1;j++){
                    b[u[j]][u[j+1]]=b[u[j+1]][u[j]]=1;
                }
            }
            for(int j=0;j<sz(line)-1;j++){
                b[line[j][0]][line[j+1][0]]=b[line[j+1][0]][line[j][0]]=1;
            }
            if(sz(ring)){
                b[line.back()[0]][ring.back()]=b[ring.back()][line.back()[0]]=1;
                b[line[0][0]][ring[0]]=b[ring[0]][line[0][0]]=1;
            } else if(sz(line)>1){
                b[line.back()[0]][line[0][0]]=b[line[0][0]][line.back()[0]]=1;
            }
        }
    }
    build(b);
    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1356 KB Output is correct
7 Correct 244 ms 25960 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1356 KB Output is correct
7 Correct 244 ms 25960 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 10 ms 1348 KB Output is correct
13 Correct 240 ms 26020 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 5 ms 948 KB Output is correct
17 Correct 115 ms 16032 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 60 ms 6744 KB Output is correct
21 Correct 234 ms 26016 KB Output is correct
22 Correct 241 ms 26084 KB Output is correct
23 Correct 269 ms 25912 KB Output is correct
24 Correct 229 ms 26052 KB Output is correct
25 Correct 100 ms 16068 KB Output is correct
26 Correct 98 ms 16036 KB Output is correct
27 Correct 256 ms 26016 KB Output is correct
28 Correct 230 ms 26052 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 10 ms 1376 KB Output is correct
9 Correct 241 ms 26020 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 10 ms 1312 KB Output is correct
13 Correct 237 ms 25924 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 5 ms 948 KB Output is correct
17 Correct 112 ms 16020 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 69 ms 6712 KB Output is correct
22 Correct 237 ms 26008 KB Output is correct
23 Correct 242 ms 26004 KB Output is correct
24 Correct 264 ms 26020 KB Output is correct
25 Correct 102 ms 16040 KB Output is correct
26 Correct 102 ms 16024 KB Output is correct
27 Correct 243 ms 26016 KB Output is correct
28 Correct 248 ms 26024 KB Output is correct
29 Correct 100 ms 16068 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 59 ms 6680 KB Output is correct
5 Correct 233 ms 25924 KB Output is correct
6 Correct 235 ms 26024 KB Output is correct
7 Correct 260 ms 26216 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 60 ms 6680 KB Output is correct
10 Correct 241 ms 26220 KB Output is correct
11 Correct 232 ms 25984 KB Output is correct
12 Correct 273 ms 26000 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 59 ms 6680 KB Output is correct
17 Correct 247 ms 25924 KB Output is correct
18 Correct 234 ms 25924 KB Output is correct
19 Correct 236 ms 26004 KB Output is correct
20 Correct 227 ms 26052 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1356 KB Output is correct
7 Correct 244 ms 25960 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 10 ms 1348 KB Output is correct
13 Correct 240 ms 26020 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 5 ms 948 KB Output is correct
17 Correct 115 ms 16032 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 60 ms 6744 KB Output is correct
21 Correct 234 ms 26016 KB Output is correct
22 Correct 241 ms 26084 KB Output is correct
23 Correct 269 ms 25912 KB Output is correct
24 Correct 229 ms 26052 KB Output is correct
25 Correct 100 ms 16068 KB Output is correct
26 Correct 98 ms 16036 KB Output is correct
27 Correct 256 ms 26016 KB Output is correct
28 Correct 230 ms 26052 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 10 ms 1376 KB Output is correct
37 Correct 241 ms 26020 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 10 ms 1312 KB Output is correct
41 Correct 237 ms 25924 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 5 ms 948 KB Output is correct
45 Correct 112 ms 16020 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 69 ms 6712 KB Output is correct
50 Correct 237 ms 26008 KB Output is correct
51 Correct 242 ms 26004 KB Output is correct
52 Correct 264 ms 26020 KB Output is correct
53 Correct 102 ms 16040 KB Output is correct
54 Correct 102 ms 16024 KB Output is correct
55 Correct 243 ms 26016 KB Output is correct
56 Correct 248 ms 26024 KB Output is correct
57 Correct 100 ms 16068 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 5 ms 948 KB Output is correct
61 Correct 111 ms 16024 KB Output is correct
62 Correct 0 ms 204 KB Output is correct
63 Correct 0 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 60 ms 6724 KB Output is correct
66 Correct 103 ms 16020 KB Output is correct
67 Correct 99 ms 16036 KB Output is correct
68 Correct 98 ms 16068 KB Output is correct
69 Correct 100 ms 16024 KB Output is correct

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 10 ms 1356 KB Output is correct
7 Correct 244 ms 25960 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 10 ms 1348 KB Output is correct
13 Correct 240 ms 26020 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 5 ms 948 KB Output is correct
17 Correct 115 ms 16032 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 60 ms 6744 KB Output is correct
21 Correct 234 ms 26016 KB Output is correct
22 Correct 241 ms 26084 KB Output is correct
23 Correct 269 ms 25912 KB Output is correct
24 Correct 229 ms 26052 KB Output is correct
25 Correct 100 ms 16068 KB Output is correct
26 Correct 98 ms 16036 KB Output is correct
27 Correct 256 ms 26016 KB Output is correct
28 Correct 230 ms 26052 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 10 ms 1376 KB Output is correct
37 Correct 241 ms 26020 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 10 ms 1312 KB Output is correct
41 Correct 237 ms 25924 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 5 ms 948 KB Output is correct
45 Correct 112 ms 16020 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 69 ms 6712 KB Output is correct
50 Correct 237 ms 26008 KB Output is correct
51 Correct 242 ms 26004 KB Output is correct
52 Correct 264 ms 26020 KB Output is correct
53 Correct 102 ms 16040 KB Output is correct
54 Correct 102 ms 16024 KB Output is correct
55 Correct 243 ms 26016 KB Output is correct
56 Correct 248 ms 26024 KB Output is correct
57 Correct 100 ms 16068 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 0 ms 204 KB Output is correct
61 Correct 59 ms 6680 KB Output is correct
62 Correct 233 ms 25924 KB Output is correct
63 Correct 235 ms 26024 KB Output is correct
64 Correct 260 ms 26216 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 60 ms 6680 KB Output is correct
67 Correct 241 ms 26220 KB Output is correct
68 Correct 232 ms 25984 KB Output is correct
69 Correct 273 ms 26000 KB Output is correct
70 Correct 0 ms 204 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 59 ms 6680 KB Output is correct
74 Correct 247 ms 25924 KB Output is correct
75 Correct 234 ms 25924 KB Output is correct
76 Correct 236 ms 26004 KB Output is correct
77 Correct 227 ms 26052 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 1 ms 204 KB Output is correct
80 Correct 5 ms 948 KB Output is correct
81 Correct 111 ms 16024 KB Output is correct
82 Correct 0 ms 204 KB Output is correct
83 Correct 0 ms 204 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 60 ms 6724 KB Output is correct
86 Correct 103 ms 16020 KB Output is correct
87 Correct 99 ms 16036 KB Output is correct
88 Correct 98 ms 16068 KB Output is correct
89 Correct 100 ms 16024 KB Output is correct
90 Correct 0 ms 204 KB Output is correct
91 Correct 0 ms 204 KB Output is correct
92 Correct 5 ms 948 KB Output is correct
93 Correct 109 ms 16028 KB Output is correct
94 Incorrect 0 ms 204 KB Answer gives possible 1 while actual possible 0
95 Halted 0 ms 0 KB -