oj.uz

Submission #431408

# Submission time Handle Problem Language Result Execution time Memory
431408 2021-06-17T11:44:37 Z Rouge_Hugo Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 298 ms 26092 KB 
#include<bits/stdc++.h>
#include "supertrees.h"
#include <vector>
#define fi first
#define se second
#define pb push_back
using namespace std;
int n;const int N=1009;
vector<vector<int>>ans;
int pa[N],nw[N],s=0,sz[N],p[N][N],vis[N];
vector<int>v[N];vector<int>sta;
vector<int>u;
void merge(int x,int y)
{
    x=pa[x];y=pa[y];
    if(x==y)return;
    if(sz[x]<sz[y])swap(x,y);
    for(auto it:v[y])
    {
        sz[x]++;
        v[x].pb(it);
        pa[it]=x;
    }
}vector<int>h;
int go(int x,int y)
{
    h.clear();
    sta.clear();int last=x;h.pb(x);
    for(auto it:v[x])sta.pb(it);
    nw[x]=++s;int three=0;
    for(int j=y+1;j<u.size();j++)
    {
        int i=u[j];
        if(vis[i])continue;
        int r=1,re=0;
        for(auto it:v[i])
        {
            for(auto pp:sta)
            {
                if(p[it][pp]==3)three++;
                if(p[it][pp]!=2&&p[it][pp]!=3)r=0;
            }
        }
        if(r==0)continue;
        vis[i]=1;nw[i]=s;h.pb(i);
        for(auto it:v[i])sta.pb(it);
        ans[last][i]=1;
        ans[i][last]=1;
        last=i;
    }
    if(ans[x][last])return 0;
    if(x==last)return 1;
    long long al=u.size();al*=al;
    if(three>0&&three!=al)return 0;
    if(three&&h.size()<4)return 0;
    if(three){ans[h[1]][h[3]]=1;
    ans[h[3]][h[1]]=1;}
    ans[x][last]=1;
    ans[last][x]=1;
    return 1;
}
vector<int>w;
int construct(vector<vector<int>> P) {
	n = P.size();
	for(int i=0;i<n;i++)
    {
        pa[i]=i;sz[i]=1;v[i].pb(i);
    }
	for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            if(i==j)continue;
            p[i][j]=P[i][j];
            if(p[i][j]==1)merge(i,j);
        }
    }
    for(int i=0;i<n;i++)w.pb(0);
    for(int i=0;i<n;i++)
    {
        ans.pb(w);
    }
	for(int i=0;i<n;i++)
    {
        if(pa[i]!=i)continue;
        for(auto it:v[i])
        {
            if(it==i)continue;
            ans[i][it]=1;
            ans[it][i]=1;
        }
        for(auto it:v[i])
        {
            for(auto pp:v[i])
            {
                if(it==pp)continue;
                if(p[it][pp]!=1)return 0;
            }
        }
        u.pb(i);
    }
    for(int i=0;i<u.size();i++)
    {
        int it=u[i];
        if(vis[it])continue;
        vis[it]=1;
        int z=go(it,i);
        if(z==0)return 0;
    }
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            if(i==j)continue;
            int x=nw[pa[i]],y=nw[pa[j]];
            if(x!=y&&p[i][j]==2||p[i][j]==3)return 0;
        }
    }

    build(ans);return 1;
}

Compilation message

supertrees.cpp: In function 'int go(int, int)':
supertrees.cpp:31:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int j=y+1;j<u.size();j++)
      |                   ~^~~~~~~~~
supertrees.cpp:35:17: warning: unused variable 're' [-Wunused-variable]
   35 |         int r=1,re=0;
      |                 ^~
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:102:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |     for(int i=0;i<u.size();i++)
      |                 ~^~~~~~~~~
supertrees.cpp:116:20: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  116 |             if(x!=y&&p[i][j]==2||p[i][j]==3)return 0;
      |                ~~~~^~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 13 ms 1980 KB Output is correct
7 Correct 255 ms 26092 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 13 ms 1980 KB Output is correct
7 Correct 255 ms 26092 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 11 ms 1996 KB Output is correct
13 Correct 242 ms 25956 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 5 ms 1612 KB Output is correct
17 Correct 110 ms 16168 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 67 ms 7712 KB Output is correct
21 Correct 243 ms 26024 KB Output is correct
22 Correct 286 ms 25964 KB Output is correct
23 Correct 242 ms 25996 KB Output is correct
24 Correct 227 ms 26076 KB Output is correct
25 Correct 105 ms 16068 KB Output is correct
26 Correct 95 ms 16128 KB Output is correct
27 Correct 258 ms 26080 KB Output is correct
28 Correct 227 ms 26012 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 13 ms 2008 KB Output is correct
9 Correct 260 ms 26088 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 10 ms 1988 KB Output is correct
13 Correct 271 ms 26084 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 5 ms 1612 KB Output is correct
17 Correct 106 ms 16168 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 66 ms 7688 KB Output is correct
22 Correct 228 ms 26052 KB Output is correct
23 Correct 242 ms 26080 KB Output is correct
24 Correct 298 ms 26024 KB Output is correct
25 Correct 101 ms 16156 KB Output is correct
26 Correct 107 ms 16164 KB Output is correct
27 Correct 274 ms 26008 KB Output is correct
28 Correct 282 ms 26008 KB Output is correct
29 Correct 102 ms 16152 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 68 ms 7744 KB Output is correct
5 Correct 232 ms 26020 KB Output is correct
6 Correct 233 ms 26072 KB Output is correct
7 Correct 268 ms 25984 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 75 ms 7728 KB Output is correct
10 Correct 259 ms 26052 KB Output is correct
11 Correct 231 ms 26052 KB Output is correct
12 Correct 248 ms 26044 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 376 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 67 ms 7736 KB Output is correct
17 Correct 250 ms 26024 KB Output is correct
18 Correct 259 ms 26004 KB Output is correct
19 Correct 270 ms 26068 KB Output is correct
20 Correct 269 ms 25980 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 13 ms 1980 KB Output is correct
7 Correct 255 ms 26092 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 11 ms 1996 KB Output is correct
13 Correct 242 ms 25956 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 5 ms 1612 KB Output is correct
17 Correct 110 ms 16168 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 67 ms 7712 KB Output is correct
21 Correct 243 ms 26024 KB Output is correct
22 Correct 286 ms 25964 KB Output is correct
23 Correct 242 ms 25996 KB Output is correct
24 Correct 227 ms 26076 KB Output is correct
25 Correct 105 ms 16068 KB Output is correct
26 Correct 95 ms 16128 KB Output is correct
27 Correct 258 ms 26080 KB Output is correct
28 Correct 227 ms 26012 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 13 ms 2008 KB Output is correct
37 Correct 260 ms 26088 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 10 ms 1988 KB Output is correct
41 Correct 271 ms 26084 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 5 ms 1612 KB Output is correct
45 Correct 106 ms 16168 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 0 ms 332 KB Output is correct
49 Correct 66 ms 7688 KB Output is correct
50 Correct 228 ms 26052 KB Output is correct
51 Correct 242 ms 26080 KB Output is correct
52 Correct 298 ms 26024 KB Output is correct
53 Correct 101 ms 16156 KB Output is correct
54 Correct 107 ms 16164 KB Output is correct
55 Correct 274 ms 26008 KB Output is correct
56 Correct 282 ms 26008 KB Output is correct
57 Correct 102 ms 16152 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 5 ms 1612 KB Output is correct
61 Correct 125 ms 16152 KB Output is correct
62 Correct 1 ms 332 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 1 ms 332 KB Output is correct
65 Correct 59 ms 7704 KB Output is correct
66 Correct 97 ms 16168 KB Output is correct
67 Correct 118 ms 16168 KB Output is correct
68 Correct 119 ms 16156 KB Output is correct
69 Correct 95 ms 16152 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 13 ms 1980 KB Output is correct
7 Correct 255 ms 26092 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 11 ms 1996 KB Output is correct
13 Correct 242 ms 25956 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 5 ms 1612 KB Output is correct
17 Correct 110 ms 16168 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 67 ms 7712 KB Output is correct
21 Correct 243 ms 26024 KB Output is correct
22 Correct 286 ms 25964 KB Output is correct
23 Correct 242 ms 25996 KB Output is correct
24 Correct 227 ms 26076 KB Output is correct
25 Correct 105 ms 16068 KB Output is correct
26 Correct 95 ms 16128 KB Output is correct
27 Correct 258 ms 26080 KB Output is correct
28 Correct 227 ms 26012 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 13 ms 2008 KB Output is correct
37 Correct 260 ms 26088 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 10 ms 1988 KB Output is correct
41 Correct 271 ms 26084 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 5 ms 1612 KB Output is correct
45 Correct 106 ms 16168 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 0 ms 332 KB Output is correct
49 Correct 66 ms 7688 KB Output is correct
50 Correct 228 ms 26052 KB Output is correct
51 Correct 242 ms 26080 KB Output is correct
52 Correct 298 ms 26024 KB Output is correct
53 Correct 101 ms 16156 KB Output is correct
54 Correct 107 ms 16164 KB Output is correct
55 Correct 274 ms 26008 KB Output is correct
56 Correct 282 ms 26008 KB Output is correct
57 Correct 102 ms 16152 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 0 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 68 ms 7744 KB Output is correct
62 Correct 232 ms 26020 KB Output is correct
63 Correct 233 ms 26072 KB Output is correct
64 Correct 268 ms 25984 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 75 ms 7728 KB Output is correct
67 Correct 259 ms 26052 KB Output is correct
68 Correct 231 ms 26052 KB Output is correct
69 Correct 248 ms 26044 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 1 ms 376 KB Output is correct
72 Correct 1 ms 332 KB Output is correct
73 Correct 67 ms 7736 KB Output is correct
74 Correct 250 ms 26024 KB Output is correct
75 Correct 259 ms 26004 KB Output is correct
76 Correct 270 ms 26068 KB Output is correct
77 Correct 269 ms 25980 KB Output is correct
78 Correct 1 ms 332 KB Output is correct
79 Correct 1 ms 332 KB Output is correct
80 Correct 5 ms 1612 KB Output is correct
81 Correct 125 ms 16152 KB Output is correct
82 Correct 1 ms 332 KB Output is correct
83 Correct 1 ms 332 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 59 ms 7704 KB Output is correct
86 Correct 97 ms 16168 KB Output is correct
87 Correct 118 ms 16168 KB Output is correct
88 Correct 119 ms 16156 KB Output is correct
89 Correct 95 ms 16152 KB Output is correct
90 Correct 1 ms 332 KB Output is correct
91 Correct 1 ms 364 KB Output is correct
92 Correct 5 ms 1508 KB Output is correct
93 Correct 124 ms 16168 KB Output is correct
94 Correct 1 ms 332 KB Output is correct
95 Correct 1 ms 332 KB Output is correct
96 Correct 1 ms 332 KB Output is correct
97 Correct 27 ms 5280 KB Output is correct
98 Correct 99 ms 16164 KB Output is correct
99 Correct 114 ms 16152 KB Output is correct
100 Correct 110 ms 16160 KB Output is correct
101 Correct 126 ms 16068 KB Output is correct
102 Correct 100 ms 16168 KB Output is correct
103 Correct 113 ms 16168 KB Output is correct
104 Correct 115 ms 16164 KB Output is correct
105 Correct 102 ms 16172 KB Output is correct