oj.uz

Submission #290123

# Submission time Handle Problem Language Result Execution time Memory
290123 2020-09-03T12:24:23 Z tinjyu Swapping Cities (APIO20_swap) C++14
100 / 100
 440 ms 63612 KB 
#include "swap.h"
#include <iostream>
#include <vector>
using namespace std;
long long int f2[1000005],can=0,fa[1000005][21],deep[1000005],p[1000005],cnt,n,m,deg[1000005],u[1000005],v[1000005],w[1000005],f[1000005],ok[1000005],num[1000005],d[1000005];
int find(int x)
{
	if(x==f2[x])return f2[x];
	return f2[x]=find(f2[x]);
}
void qs(int s,int e)
{
	if(s==e)return ;
	long long int l=s,r=e,mid=w[(s+e)/2];
	while(l<=r)
	{
		while(w[l]<mid)l++;
		while(w[r]>mid)r--;
		if(l<=r)
		{
			swap(w[l],w[r]);
			swap(u[l],u[r]);
			swap(v[l],v[r]);
			l++;
			r--;
		}
	}
	if(r>s)qs(s,r);
	if(e>l)qs(l,e);
}
void update(int x)
{
	if(p[x]!=-1)return ;
	//cout<<x<<" "<<ok[x]<<" "<<f[x]<<endl;
	if(ok[x]==1)
	{
		p[x]=x;
		return ;
	}
	update(f[x]);
	p[x]=p[f[x]];
	return ;
}
void update2(int x)
{
	if(deep[x]!=0)return ;
	if(f[x]==x)
	{
		deep[x]=1;
		return ;
	}
	update2(f[x]);
	deep[x]=deep[f[x]]+1;
	return ;
}
void init(int N, int M,std::vector<int> U, std::vector<int> V, std::vector<int> W) {
	n=N;
	m=M;
	cnt=n-1;
	for(int i=0;i<m;i++)
	{
		u[i]=U[i];
		v[i]=V[i];
		w[i]=W[i];
	}
	qs(0,m-1);
	long long int ma=0;
	for(int i=0;i<=1000000;i++)
	{
		f2[i]=i;
		f[i]=i;
	}
	for(int i=0;i<m;i++)
	{
		long long int x=u[i],y=v[i];
		deg[x]++;
		deg[y]++;
		long long int fx=find(x),fy=find(y);
		//cout<<fx<<" "<<fy<<endl;
		if(fx==fy)
		{
			if(ok[fx]==0)
			{
				can=1;
				ok[fx]=1;
				num[fx]=w[i];
			}
		}
		else
		{
			if(ok[fx]==1 || ok[fy]==1 || deg[x]>=3 || deg[y]>=3)
			{
				cnt++;
				//cout<<cnt<<" "<<x<<" "<<y<<endl;
				can=1;
				f[fx]=cnt;
				f[fy]=cnt;
				f2[fx]=cnt;
				f2[fy]=cnt;
				ok[cnt]=1;
				num[cnt]=w[i];
			}
			else
			{
				f[fy]=fx;
				f2[fy]=fx;
			}
		}
	}
	if(can==0)return ;
	for(int i=0;i<=cnt;i++)
	{
		p[i]=-1;
	}
	for(int i=0;i<=cnt;i++)
	{
		if(p[i]==-1)update(i);
		//cout<<i<<" "<<p[i]<<endl;
		//cout<<i<<" "<<f[i]<<endl;
	}
	for(int i=0;i<=cnt;i++)
	{
		if(deep[i]==0)update2(i);
	}

	for(int i=0;i<=cnt;i++)
	{
		fa[i][0]=f[p[i]];
		if(f[p[i]]==p[i])fa[i][0]=-1;
	}
	for(int i=1;i<=20;i++)
	{
		for(int j=0;j<=cnt;j++)
		{
			if(fa[j][i-1]==-1)continue;
			fa[j][i]=fa[fa[j][i-1]][i-1];
		}
	}
	return ;
}
int lca(int x,int y)
{
	if(deep[x]<deep[y])swap(x,y);
	//cout<<x<<" "<<y<<" "<<deep[x]<<" "<<deep[y]<<endl;
	int tmp=deep[x]-deep[y];
	int pp=0;
	while(tmp>0)
	{
		if(tmp%2==1)x=fa[x][pp];
		tmp/=2;
		pp++;
	}
	if(x==y)return num[x];
	for(int i=20;i>=0;i--)
	{

		if(fa[x][i]!=fa[y][i] && fa[x][i]!=-1)
		{
			x=fa[x][i];
			y=fa[y][i];
		}
	}
	return num[f[x]];
}
int getMinimumFuelCapacity(int X, int Y) {
	if(can==0)return -1;
	int x=p[X],y=p[Y];
	//cout<<" "<<x<<" "<<y<<endl;
	int ans=lca(x,y);
	if(ans==0)return -1;
	return ans;
}

Compilation message

swap.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
swap.cpp:67:16: warning: unused variable 'ma' [-Wunused-variable]
   67 |  long long int ma=0;
      |                ^~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 10 ms 16000 KB Output is correct
4 Correct 10 ms 16000 KB Output is correct
5 Correct 12 ms 16000 KB Output is correct
6 Correct 10 ms 16000 KB Output is correct
7 Correct 10 ms 16000 KB Output is correct
8 Correct 11 ms 16000 KB Output is correct
9 Correct 56 ms 20344 KB Output is correct
10 Correct 67 ms 21240 KB Output is correct
11 Correct 66 ms 21240 KB Output is correct
12 Correct 70 ms 21496 KB Output is correct
13 Correct 69 ms 22008 KB Output is correct
14 Correct 64 ms 20472 KB Output is correct
15 Correct 140 ms 23172 KB Output is correct
16 Correct 143 ms 23208 KB Output is correct
17 Correct 147 ms 23264 KB Output is correct
18 Correct 142 ms 23648 KB Output is correct
19 Correct 83 ms 23236 KB Output is correct
20 Correct 175 ms 41848 KB Output is correct
21 Correct 176 ms 41140 KB Output is correct
22 Correct 188 ms 42720 KB Output is correct
23 Correct 186 ms 43104 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 333 ms 61336 KB Output is correct
4 Correct 333 ms 63612 KB Output is correct
5 Correct 335 ms 62220 KB Output is correct
6 Correct 341 ms 63200 KB Output is correct
7 Correct 342 ms 62836 KB Output is correct
8 Correct 333 ms 61092 KB Output is correct
9 Correct 334 ms 62580 KB Output is correct
10 Correct 336 ms 60720 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 10 ms 16000 KB Output is correct
4 Correct 10 ms 16000 KB Output is correct
5 Correct 10 ms 16000 KB Output is correct
6 Correct 12 ms 16000 KB Output is correct
7 Correct 10 ms 16000 KB Output is correct
8 Correct 10 ms 16000 KB Output is correct
9 Correct 11 ms 16000 KB Output is correct
10 Correct 11 ms 16384 KB Output is correct
11 Correct 10 ms 16256 KB Output is correct
12 Correct 10 ms 16256 KB Output is correct
13 Correct 11 ms 16256 KB Output is correct
14 Correct 10 ms 16256 KB Output is correct
15 Correct 10 ms 16256 KB Output is correct
16 Correct 11 ms 16256 KB Output is correct
17 Correct 10 ms 16384 KB Output is correct
18 Correct 10 ms 16384 KB Output is correct
19 Correct 10 ms 16256 KB Output is correct
20 Correct 10 ms 16256 KB Output is correct
21 Correct 10 ms 16384 KB Output is correct
22 Correct 11 ms 16128 KB Output is correct
23 Correct 10 ms 16384 KB Output is correct
24 Correct 11 ms 16384 KB Output is correct
25 Correct 11 ms 16384 KB Output is correct
26 Correct 11 ms 16384 KB Output is correct
27 Correct 11 ms 16384 KB Output is correct
28 Correct 11 ms 16384 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 10 ms 16000 KB Output is correct
4 Correct 10 ms 16000 KB Output is correct
5 Correct 10 ms 16000 KB Output is correct
6 Correct 12 ms 16000 KB Output is correct
7 Correct 10 ms 16000 KB Output is correct
8 Correct 10 ms 16000 KB Output is correct
9 Correct 11 ms 16000 KB Output is correct
10 Correct 56 ms 20344 KB Output is correct
11 Correct 67 ms 21240 KB Output is correct
12 Correct 66 ms 21240 KB Output is correct
13 Correct 70 ms 21496 KB Output is correct
14 Correct 69 ms 22008 KB Output is correct
15 Correct 11 ms 16384 KB Output is correct
16 Correct 10 ms 16256 KB Output is correct
17 Correct 10 ms 16256 KB Output is correct
18 Correct 11 ms 16256 KB Output is correct
19 Correct 10 ms 16256 KB Output is correct
20 Correct 10 ms 16256 KB Output is correct
21 Correct 11 ms 16256 KB Output is correct
22 Correct 10 ms 16384 KB Output is correct
23 Correct 10 ms 16384 KB Output is correct
24 Correct 21 ms 20480 KB Output is correct
25 Correct 102 ms 39544 KB Output is correct
26 Correct 101 ms 39544 KB Output is correct
27 Correct 100 ms 39796 KB Output is correct
28 Correct 101 ms 40184 KB Output is correct
29 Correct 107 ms 42872 KB Output is correct
30 Correct 109 ms 43768 KB Output is correct
31 Correct 103 ms 39544 KB Output is correct
32 Correct 99 ms 39520 KB Output is correct
33 Correct 151 ms 58876 KB Output is correct
34 Correct 129 ms 48632 KB Output is correct
35 Correct 10 ms 16256 KB Output is correct
36 Correct 10 ms 16256 KB Output is correct
37 Correct 10 ms 16384 KB Output is correct
38 Correct 11 ms 16128 KB Output is correct
39 Correct 10 ms 16384 KB Output is correct
40 Correct 11 ms 16384 KB Output is correct
41 Correct 11 ms 16384 KB Output is correct
42 Correct 11 ms 16384 KB Output is correct
43 Correct 11 ms 16384 KB Output is correct
44 Correct 11 ms 16384 KB Output is correct
45 Correct 155 ms 46328 KB Output is correct
46 Correct 99 ms 39544 KB Output is correct
47 Correct 104 ms 40824 KB Output is correct
48 Correct 137 ms 49144 KB Output is correct
49 Correct 94 ms 23800 KB Output is correct
50 Correct 78 ms 23928 KB Output is correct
51 Correct 131 ms 41080 KB Output is correct
52 Correct 144 ms 43000 KB Output is correct
53 Correct 174 ms 51612 KB Output is correct
54 Correct 169 ms 44280 KB Output is correct
55 Correct 154 ms 59256 KB Output is correct
56 Correct 190 ms 54036 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 10 ms 16000 KB Output is correct
4 Correct 10 ms 16000 KB Output is correct
5 Correct 12 ms 16000 KB Output is correct
6 Correct 10 ms 16000 KB Output is correct
7 Correct 10 ms 16000 KB Output is correct
8 Correct 11 ms 16000 KB Output is correct
9 Correct 56 ms 20344 KB Output is correct
10 Correct 67 ms 21240 KB Output is correct
11 Correct 66 ms 21240 KB Output is correct
12 Correct 70 ms 21496 KB Output is correct
13 Correct 69 ms 22008 KB Output is correct
14 Correct 64 ms 20472 KB Output is correct
15 Correct 140 ms 23172 KB Output is correct
16 Correct 143 ms 23208 KB Output is correct
17 Correct 147 ms 23264 KB Output is correct
18 Correct 142 ms 23648 KB Output is correct
19 Correct 333 ms 61336 KB Output is correct
20 Correct 333 ms 63612 KB Output is correct
21 Correct 335 ms 62220 KB Output is correct
22 Correct 341 ms 63200 KB Output is correct
23 Correct 342 ms 62836 KB Output is correct
24 Correct 333 ms 61092 KB Output is correct
25 Correct 334 ms 62580 KB Output is correct
26 Correct 336 ms 60720 KB Output is correct
27 Correct 11 ms 16384 KB Output is correct
28 Correct 10 ms 16256 KB Output is correct
29 Correct 10 ms 16256 KB Output is correct
30 Correct 11 ms 16256 KB Output is correct
31 Correct 10 ms 16256 KB Output is correct
32 Correct 10 ms 16256 KB Output is correct
33 Correct 11 ms 16256 KB Output is correct
34 Correct 10 ms 16384 KB Output is correct
35 Correct 10 ms 16384 KB Output is correct
36 Correct 21 ms 20480 KB Output is correct
37 Correct 102 ms 39544 KB Output is correct
38 Correct 101 ms 39544 KB Output is correct
39 Correct 100 ms 39796 KB Output is correct
40 Correct 101 ms 40184 KB Output is correct
41 Correct 107 ms 42872 KB Output is correct
42 Correct 109 ms 43768 KB Output is correct
43 Correct 103 ms 39544 KB Output is correct
44 Correct 99 ms 39520 KB Output is correct
45 Correct 151 ms 58876 KB Output is correct
46 Correct 129 ms 48632 KB Output is correct
47 Correct 31 ms 20336 KB Output is correct
48 Correct 193 ms 42204 KB Output is correct
49 Correct 196 ms 42208 KB Output is correct
50 Correct 218 ms 42460 KB Output is correct
51 Correct 209 ms 42984 KB Output is correct
52 Correct 258 ms 43816 KB Output is correct
53 Correct 280 ms 41112 KB Output is correct
54 Correct 197 ms 42880 KB Output is correct
55 Correct 179 ms 42096 KB Output is correct
56 Correct 440 ms 61640 KB Output is correct
57 Correct 316 ms 51864 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 10 ms 16000 KB Output is correct
4 Correct 10 ms 16000 KB Output is correct
5 Correct 10 ms 16000 KB Output is correct
6 Correct 12 ms 16000 KB Output is correct
7 Correct 10 ms 16000 KB Output is correct
8 Correct 10 ms 16000 KB Output is correct
9 Correct 11 ms 16000 KB Output is correct
10 Correct 56 ms 20344 KB Output is correct
11 Correct 67 ms 21240 KB Output is correct
12 Correct 66 ms 21240 KB Output is correct
13 Correct 70 ms 21496 KB Output is correct
14 Correct 69 ms 22008 KB Output is correct
15 Correct 64 ms 20472 KB Output is correct
16 Correct 140 ms 23172 KB Output is correct
17 Correct 143 ms 23208 KB Output is correct
18 Correct 147 ms 23264 KB Output is correct
19 Correct 142 ms 23648 KB Output is correct
20 Correct 333 ms 61336 KB Output is correct
21 Correct 333 ms 63612 KB Output is correct
22 Correct 335 ms 62220 KB Output is correct
23 Correct 341 ms 63200 KB Output is correct
24 Correct 342 ms 62836 KB Output is correct
25 Correct 333 ms 61092 KB Output is correct
26 Correct 334 ms 62580 KB Output is correct
27 Correct 336 ms 60720 KB Output is correct
28 Correct 11 ms 16384 KB Output is correct
29 Correct 10 ms 16256 KB Output is correct
30 Correct 10 ms 16256 KB Output is correct
31 Correct 11 ms 16256 KB Output is correct
32 Correct 10 ms 16256 KB Output is correct
33 Correct 10 ms 16256 KB Output is correct
34 Correct 11 ms 16256 KB Output is correct
35 Correct 10 ms 16384 KB Output is correct
36 Correct 10 ms 16384 KB Output is correct
37 Correct 21 ms 20480 KB Output is correct
38 Correct 102 ms 39544 KB Output is correct
39 Correct 101 ms 39544 KB Output is correct
40 Correct 100 ms 39796 KB Output is correct
41 Correct 101 ms 40184 KB Output is correct
42 Correct 107 ms 42872 KB Output is correct
43 Correct 109 ms 43768 KB Output is correct
44 Correct 103 ms 39544 KB Output is correct
45 Correct 99 ms 39520 KB Output is correct
46 Correct 151 ms 58876 KB Output is correct
47 Correct 129 ms 48632 KB Output is correct
48 Correct 31 ms 20336 KB Output is correct
49 Correct 193 ms 42204 KB Output is correct
50 Correct 196 ms 42208 KB Output is correct
51 Correct 218 ms 42460 KB Output is correct
52 Correct 209 ms 42984 KB Output is correct
53 Correct 258 ms 43816 KB Output is correct
54 Correct 280 ms 41112 KB Output is correct
55 Correct 197 ms 42880 KB Output is correct
56 Correct 179 ms 42096 KB Output is correct
57 Correct 440 ms 61640 KB Output is correct
58 Correct 316 ms 51864 KB Output is correct
59 Correct 83 ms 23236 KB Output is correct
60 Correct 175 ms 41848 KB Output is correct
61 Correct 176 ms 41140 KB Output is correct
62 Correct 188 ms 42720 KB Output is correct
63 Correct 186 ms 43104 KB Output is correct
64 Correct 10 ms 16256 KB Output is correct
65 Correct 10 ms 16256 KB Output is correct
66 Correct 10 ms 16384 KB Output is correct
67 Correct 11 ms 16128 KB Output is correct
68 Correct 10 ms 16384 KB Output is correct
69 Correct 11 ms 16384 KB Output is correct
70 Correct 11 ms 16384 KB Output is correct
71 Correct 11 ms 16384 KB Output is correct
72 Correct 11 ms 16384 KB Output is correct
73 Correct 11 ms 16384 KB Output is correct
74 Correct 155 ms 46328 KB Output is correct
75 Correct 99 ms 39544 KB Output is correct
76 Correct 104 ms 40824 KB Output is correct
77 Correct 137 ms 49144 KB Output is correct
78 Correct 94 ms 23800 KB Output is correct
79 Correct 78 ms 23928 KB Output is correct
80 Correct 131 ms 41080 KB Output is correct
81 Correct 144 ms 43000 KB Output is correct
82 Correct 174 ms 51612 KB Output is correct
83 Correct 169 ms 44280 KB Output is correct
84 Correct 154 ms 59256 KB Output is correct
85 Correct 190 ms 54036 KB Output is correct
86 Correct 86 ms 28004 KB Output is correct
87 Correct 208 ms 42332 KB Output is correct
88 Correct 211 ms 42204 KB Output is correct
89 Correct 307 ms 50584 KB Output is correct
90 Correct 187 ms 26576 KB Output is correct
91 Correct 204 ms 28832 KB Output is correct
92 Correct 279 ms 43736 KB Output is correct
93 Correct 260 ms 46000 KB Output is correct
94 Correct 373 ms 52056 KB Output is correct
95 Correct 264 ms 45868 KB Output is correct
96 Correct 440 ms 61600 KB Output is correct
97 Correct 371 ms 54432 KB Output is correct