oj.uz

Submission #301221

# Submission time Handle Problem Language Result Execution time Memory
301221 2020-09-17T18:09:03 Z M4mou Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 263 ms 22140 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;

#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
#define fi first
#define se second
#define inf 1000000000
#define sz(x) (ll)x.size()
#define boost ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
typedef long long ll;
typedef unsigned long long ull;
typedef  double ld;
typedef vector<int> vi;
typedef pair<int,int> pii;
typedef pair< int , pii> piii;
typedef pair<int,bool> pib;
typedef vector<pii> vii;
typedef vector<pib> vib;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
typedef vector<string> vs;
typedef vector<ll> vll;
typedef pair<string,string> pss;
typedef vector<pss> vss;
typedef pair<ld , ld> pdd;
typedef vector<ld> vd;
typedef vector<vector<pib>> vvib;
typedef vector<piii> viii;
typedef vector<viii> vviii;
typedef vector<bool> vb;
typedef pair<pii , bool> piib;
typedef vector<pair<pii , bool>> viib;
const int MOD = 1e9 + 7; //998244353;
const int MAXN = 100005;

int n;
struct UnionFind{
public:
    vi par;
    UnionFind(){
        for(int i = 0;i<n;i++)par[i] = i;
    }
    void init(){
        par.resize(n);
        for(int i = 0;i<n;i++)par[i] = i;
    }
    int findset(int x){
        if(par[x] == x)return x;
        return par[x] = findset(par[x]);
    }
    void Union(int x , int y){
        x = findset(x);
        y = findset(y);
        if(x != y){
            par[x] = y;
        }
    }
};

UnionFind components;
UnionFind branches;

vvi ans;
bool v[1005];
int construct(vvi p){

    n = p.size();
    ans.assign(n ,vi(n ,0));
    components.init();

    branches.init();
    memset(v , 0 , 1005);
    for(int i = 0;i<n;i++){
        for(int j = 0;j<n;j++){
            if(p[i][j] == 3)return 0;
            if(p[i][j] >= 1)components.Union(i, j);
            if(p[i][j] == 1)branches.Union(i,j);
        }
    }

    for(int i = 0;i<n;i++){
        int c = 0;
        for(int j = 0;j<n;j++){
            if(p[i][j] == 0){
                if(components.findset(i) == components.findset(j))return 0;
            }
            if(p[i][j] == 2 && branches.findset(i) == branches.findset(j))return 0;
            if(p[i][j] == 2){
                int y = branches.findset(j);
                if(v[y])continue;
                v[y] = 1;
                c++;
            }
        }
        if(c == 1)return 0;
        memset(v , 0 , sizeof v);
    }

    for(int i = 0;i<n;i++){
        int x = branches.findset(i);
        if(v[x])continue;
        vi res;

        for(int j = 0;j<n;j++){
            if(branches.findset(j) == x)res.pb(j);
        }
        v[x] = 1;
        if(res.size() <= 1)continue;
        for(int j = 0;j<res.size()-1;j++){
            ans[res[j]][res[j+1]] = 1;
            ans[res[j+1]][res[j]] = 1;
        }
    }
    memset(v , 0 , 1005);
    for(int i = 0;i<n;i++){
        int x = components.findset(i);
        if(v[x])continue;
        vi res;
        for(int j = 0;j<n;j++){
            int y = branches.findset(j);
            if(v[y])continue;
            v[y] = 1;
            if(components.findset(y) == x)res.pb(y);
        }
        if(res.size() <= 1)continue;
        for(int j = 0;j<res.size()-1;j++){
            ans[res[j]][res[j+1]] = 1;
            ans[res[j+1]][res[j]] = 1;
        }
        ans[res.front()][res.back()] = 1;
        ans[res.back()][res.front()] = 1;
    }
    build(ans);

    return 1;
}

//NEVER GIVE UP
//LONG LONG

Compilation message

supertrees.cpp: In function 'int construct(vvi)':
supertrees.cpp:112:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |         for(int j = 0;j<res.size()-1;j++){
      |                       ~^~~~~~~~~~~~~
supertrees.cpp:129:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |         for(int j = 0;j<res.size()-1;j++){
      |                       ~^~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 254 ms 22136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 254 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 13 ms 1152 KB Output is correct
13 Correct 237 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5752 KB Output is correct
21 Correct 241 ms 22136 KB Output is correct
22 Correct 241 ms 22136 KB Output is correct
23 Correct 262 ms 22136 KB Output is correct
24 Correct 246 ms 22140 KB Output is correct
25 Correct 102 ms 12124 KB Output is correct
26 Correct 100 ms 12152 KB Output is correct
27 Correct 260 ms 22136 KB Output is correct
28 Correct 247 ms 22136 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 10 ms 1152 KB Output is correct
9 Correct 240 ms 22136 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 11 ms 1152 KB Output is correct
13 Correct 255 ms 22136 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 7 ms 768 KB Output is correct
17 Correct 117 ms 12116 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Incorrect 61 ms 5752 KB Too few ways to get from 1 to 17, should be 2 found 0
22 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 61 ms 5752 KB Output is correct
5 Correct 257 ms 22136 KB Output is correct
6 Correct 246 ms 22140 KB Output is correct
7 Correct 263 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Incorrect 62 ms 5880 KB Too few ways to get from 1 to 17, should be 2 found 0
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 254 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 13 ms 1152 KB Output is correct
13 Correct 237 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5752 KB Output is correct
21 Correct 241 ms 22136 KB Output is correct
22 Correct 241 ms 22136 KB Output is correct
23 Correct 262 ms 22136 KB Output is correct
24 Correct 246 ms 22140 KB Output is correct
25 Correct 102 ms 12124 KB Output is correct
26 Correct 100 ms 12152 KB Output is correct
27 Correct 260 ms 22136 KB Output is correct
28 Correct 247 ms 22136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 10 ms 1152 KB Output is correct
37 Correct 240 ms 22136 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 255 ms 22136 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 7 ms 768 KB Output is correct
45 Correct 117 ms 12116 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 0 ms 256 KB Output is correct
49 Incorrect 61 ms 5752 KB Too few ways to get from 1 to 17, should be 2 found 0
50 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1152 KB Output is correct
7 Correct 254 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 13 ms 1152 KB Output is correct
13 Correct 237 ms 22136 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 118 ms 12152 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 60 ms 5752 KB Output is correct
21 Correct 241 ms 22136 KB Output is correct
22 Correct 241 ms 22136 KB Output is correct
23 Correct 262 ms 22136 KB Output is correct
24 Correct 246 ms 22140 KB Output is correct
25 Correct 102 ms 12124 KB Output is correct
26 Correct 100 ms 12152 KB Output is correct
27 Correct 260 ms 22136 KB Output is correct
28 Correct 247 ms 22136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 10 ms 1152 KB Output is correct
37 Correct 240 ms 22136 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 11 ms 1152 KB Output is correct
41 Correct 255 ms 22136 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 7 ms 768 KB Output is correct
45 Correct 117 ms 12116 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 0 ms 256 KB Output is correct
49 Incorrect 61 ms 5752 KB Too few ways to get from 1 to 17, should be 2 found 0
50 Halted 0 ms 0 KB -