oj.uz

Submission #2686

# Submission time Handle Problem Language Result Execution time Memory
2686 2013-07-30T15:20:23 Z gs13068 간선 파괴 (GA5_destroy) C++
60 / 100
 1332 ms 6004 KB 
#include<cstdio>
#include<vector>

#define BUCKET_SIZE 8

int s[123456];
int e[123456];

struct edge
{
int s;
int e;
} temp;

std::vector<edge> pre[482];
std::vector<edge> suf[482];
int parent[700];
int height[700];

inline int root(int x)
{
return parent[x]==x?x:parent[x]=root(parent[x]);
}

inline void combine(int a,int b)
{
a=root(a);
b=root(b);
if(a==b)return;
if(height[a]<height[b])parent[a]=b;
else parent[b]=a;
if(height[a]==height[b])height[b]++;
}

int main()
{
int i,j,k,n,m,l,r,q;
scanf("%d%d",&n,&m);
for(i=0;i<m;i++)
{
scanf("%d%d",&s[i],&e[i]);
s[i]--;e[i]--;
}
for(i=0;i<n;i++)
{
parent[i]=i;
height[i]=0;
}
for(i=0;i<m;i++)
{
combine(s[i],e[i]);
if((i&((1<<BUCKET_SIZE)-1))==(1<<BUCKET_SIZE)-1)
{
for(j=0;j<n;j++)if(parent[j]!=j)
{
temp.s=j;
temp.e=parent[j];
pre[i>>BUCKET_SIZE].push_back(temp);
}
}
}
for(i=0;i<n;i++)
{
parent[i]=i;
height[i]=0;
}
for(i=m-1;i>=0;i--)
{
combine(s[i],e[i]);
if(!(i&((1<<BUCKET_SIZE)-1)))
{
for(j=0;j<n;j++)if(parent[j]!=j)
{
temp.s=j;
temp.e=parent[j];
suf[i>>BUCKET_SIZE].push_back(temp);
}
}
}
scanf("%d",&q);
for(i=0;i<q;i++)
{
scanf("%d%d",&l,&r);
l--;r--;
for(j=0;j<n;j++)
{
parent[j]=j;
height[j]=0;
}
j=(l>>BUCKET_SIZE)-1;
if(j>=0)for(k=0;k<pre[j].size();k++)combine(pre[j][k].s,pre[j][k].e);
for(k=(l>>BUCKET_SIZE)<<BUCKET_SIZE;k<l;k++)combine(s[k],e[k]);
j=(r>>BUCKET_SIZE)+1;
for(k=0;k<suf[j].size();k++)combine(suf[j][k].s,suf[j][k].e);
for(k=r+1;k<((r>>BUCKET_SIZE)+1)<<BUCKET_SIZE;k++)combine(s[k],e[k]);
k=0;
for(j=0;j<n;j++)if(parent[j]==j)k++;
printf("%d\n",k);
}
}

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2204 KB Output is correct
2 Correct 0 ms 2204 KB Output is correct
3 Correct 0 ms 2204 KB Output is correct
4 Correct 0 ms 2204 KB Output is correct
5 Correct 0 ms 2204 KB Output is correct
6 Correct 0 ms 2204 KB Output is correct
7 Correct 0 ms 2204 KB Output is correct
8 Correct 0 ms 2204 KB Output is correct
9 Correct 0 ms 2204 KB Output is correct
10 Correct 0 ms 2204 KB Output is correct
11 Correct 0 ms 2204 KB Output is correct
12 Correct 0 ms 2204 KB Output is correct
13 Correct 0 ms 2204 KB Output is correct
14 Correct 0 ms 2204 KB Output is correct
15 Correct 0 ms 2204 KB Output is correct
16 Correct 0 ms 2204 KB Output is correct
17 Correct 0 ms 2204 KB Output is correct
18 Correct 0 ms 2204 KB Output is correct
19 Correct 0 ms 2204 KB Output is correct
20 Correct 0 ms 2204 KB Output is correct
21 Correct 0 ms 2204 KB Output is correct
22 Correct 0 ms 2204 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 2600 KB Output is correct
2 Correct 44 ms 2600 KB Output is correct
3 Correct 44 ms 2600 KB Output is correct
4 Correct 52 ms 3656 KB Output is correct
5 Correct 48 ms 3656 KB Output is correct
6 Correct 408 ms 3656 KB Output is correct
7 Correct 400 ms 3524 KB Output is correct
8 Correct 396 ms 3524 KB Output is correct
9 Correct 56 ms 2204 KB Output is correct
10 Correct 52 ms 2204 KB Output is correct
11 Correct 56 ms 2204 KB Output is correct
12 Correct 44 ms 3656 KB Output is correct
13 Correct 44 ms 3656 KB Output is correct
14 Correct 48 ms 3656 KB Output is correct
15 Correct 40 ms 2204 KB Output is correct
16 Correct 48 ms 2204 KB Output is correct
17 Correct 12 ms 2204 KB Output is correct
18 Correct 8 ms 2204 KB Output is correct
19 Correct 4 ms 2204 KB Output is correct
20 Correct 4 ms 2204 KB Output is correct
21 Correct 0 ms 2204 KB Output is correct
22 Correct 4 ms 2204 KB Output is correct

Subtask #3
0.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1316 ms 5328 KB Output is correct
2 Correct 1332 ms 5192 KB Output is correct
3 Runtime error 32 ms 6004 KB Program hung waiting for input
4 Halted 0 ms 0 KB -