QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#331800 | #3275. 小明的树 | JohnAlfnov | 100 ✓ | 1531ms | 39592kb | C++14 | 2.0kb | 2024-02-18 19:41:48 | 2024-02-18 19:41:49 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
int n,m;
int u[500005],v[500005];
int a[500005],aa[500005];
struct apple{
int mn,gs;
long long he;
}sm[2000005];
apple operator+(apple a,apple b){
apple c;
c.mn=min(a.mn,b.mn),c.gs=c.he=0;
if(c.mn==a.mn)c.gs+=a.gs,c.he+=a.he;
if(c.mn==b.mn)c.gs+=b.gs,c.he+=b.he;
return c;
}
int lza[2000005],lzb[2000005];
void build(int l,int r,int o){
if(l==r){
sm[o].gs=1;
return;
}
int mid=(l+r)>>1;
build(l,mid,o<<1);
build(mid+1,r,o<<1|1);
sm[o]=sm[o<<1]+sm[o<<1|1];
}
void pushdown(int o){
if(lza[o]){
sm[o<<1].mn+=lza[o],sm[o<<1|1].mn+=lza[o];
lza[o<<1]+=lza[o],lza[o<<1|1]+=lza[o];
lza[o]=0;
}
if(lzb[o]){
sm[o<<1].he+=1ll*sm[o<<1].gs*lzb[o];
sm[o<<1|1].he+=1ll*sm[o<<1|1].gs*lzb[o];
lzb[o<<1]+=lzb[o],lzb[o<<1|1]+=lzb[o];
lzb[o]=0;
}
}
void adda(int l,int r,int o,int ll,int rr,int z){
if(l>=ll&&r<=rr){
sm[o].mn+=z,lza[o]+=z;
return;
}
pushdown(o);
int mid=(l+r)>>1;
if(mid>=ll)adda(l,mid,o<<1,ll,rr,z);
if(mid<rr)adda(mid+1,r,o<<1|1,ll,rr,z);
sm[o]=sm[o<<1]+sm[o<<1|1];
}
void addb(int l,int r,int o,int ll,int rr,int z){
if(l>=ll&&r<=rr){
sm[o].he+=1ll*sm[o].gs*z,lzb[o]+=z;
return;
}
pushdown(o);
int mid=(l+r)>>1;
if(mid>=ll)addb(l,mid,o<<1,ll,rr,z);
if(mid<rr)addb(mid+1,r,o<<1|1,ll,rr,z);
sm[o]=sm[o<<1]+sm[o<<1|1];
}
void jia(int u,int v,int z){
if(u!=1&&v!=1)addb(1,n-1,1,max(aa[u],aa[v]),n-1,-z);
if(aa[u]>1&&aa[v]>1)adda(1,n-1,1,1,min(aa[u],aa[v])-1,-z);
}
int main(){
scanf("%d%d",&n,&m);
for(int i=1;i<n;++i)scanf("%d%d",&u[i],&v[i]);
for(int i=2;i<=n;++i)scanf("%d",&a[i]),aa[a[i]]=i-1;
aa[1]=n;
build(1,n-1,1);
for(int i=1;i<n;++i)adda(1,n-1,1,1,i,1);
for(int i=1;i<n;++i)addb(1,n-1,1,i,n-1,1);
for(int i=1;i<n;++i)jia(u[i],v[i],1);
printf("%lld\n",sm[1].he);
while(m--){
int u1,v1,u2,v2;
scanf("%d%d%d%d",&u1,&v1,&u2,&v2);
jia(u1,v1,-1);jia(u2,v2,1);
printf("%lld\n",sm[1].he);
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 552ms
memory: 39592kb
input:
500000 0 2 1 3 2 4 2 5 4 6 1 7 1 8 4 9 3 10 9 11 3 12 8 13 5 14 7 15 10 16 10 17 13 18 14 19 18 20 14 21 13 22 3 23 2 24 2 25 10 26 19 27 13 28 16 29 7 30 11 31 13 32 28 33 30 34 10 35 26 36 5 37 34 38 20 39 7 40 35 41 30 42 11 43 40 44 10 45 5 46 23 47 15 48 23 49 16 50 5 51 13 52 23 53 47 54 3 55 ...
output:
237
result:
ok 1 number(s): "237"
Subtask #2:
score: 20
Accepted
Test #2:
score: 20
Accepted
time: 11ms
memory: 12188kb
input:
8000 8000 2 1 3 2 4 1 5 4 6 3 7 4 8 3 9 3 10 8 11 6 12 7 13 11 14 11 15 7 16 4 17 11 18 7 19 8 20 19 21 18 22 17 23 2 24 15 25 23 26 13 27 10 28 1 29 7 30 17 31 11 32 18 33 2 34 1 35 29 36 5 37 21 38 6 39 7 40 26 41 19 42 3 43 9 44 39 45 23 46 41 47 38 48 12 49 4 50 30 51 1 52 41 53 17 54 41 55 53 5...
output:
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 ...
result:
ok 8001 numbers
Test #3:
score: 0
Accepted
time: 15ms
memory: 14164kb
input:
8000 8000 2 1 3 2 4 3 5 1 6 1 7 2 8 6 9 7 10 5 11 8 12 1 13 3 14 9 15 7 16 11 17 15 18 17 19 16 20 8 21 9 22 16 23 8 24 17 25 23 26 11 27 22 28 16 29 11 30 14 31 27 32 23 33 24 34 7 35 26 36 10 37 35 38 7 39 21 40 7 41 11 42 32 43 11 44 17 45 9 46 4 47 5 48 24 49 25 50 15 51 32 52 41 53 28 54 34 55 ...
output:
12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 ...
result:
ok 8001 numbers
Subtask #3:
score: 70
Accepted
Dependency #1:
100%
Accepted
Dependency #2:
100%
Accepted
Test #4:
score: 70
Accepted
time: 1467ms
memory: 37660kb
input:
500000 500000 2 1 3 2 4 1 5 2 6 1 7 6 8 7 9 1 10 7 11 8 12 11 13 6 14 4 15 4 16 6 17 9 18 8 19 14 20 11 21 15 22 9 23 11 24 16 25 6 26 19 27 15 28 7 29 10 30 18 31 5 32 30 33 27 34 15 35 22 36 23 37 13 38 21 39 12 40 12 41 38 42 8 43 42 44 37 45 43 46 17 47 14 48 41 49 20 50 20 51 44 52 39 53 23 54 ...
output:
262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 262 ...
result:
ok 500001 numbers
Test #5:
score: 0
Accepted
time: 1512ms
memory: 38336kb
input:
500000 500000 2 1 3 1 4 2 5 3 6 2 7 3 8 1 9 3 10 2 11 8 12 6 13 8 14 7 15 12 16 8 17 11 18 10 19 12 20 12 21 7 22 6 23 16 24 1 25 21 26 13 27 8 28 19 29 3 30 26 31 27 32 21 33 21 34 23 35 16 36 28 37 31 38 3 39 17 40 9 41 8 42 37 43 15 44 40 45 8 46 44 47 31 48 46 49 27 50 17 51 9 52 13 53 29 54 6 5...
output:
415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 415 ...
result:
ok 500001 numbers
Test #6:
score: 0
Accepted
time: 1531ms
memory: 38508kb
input:
500000 500000 2 1 3 2 4 1 5 4 6 3 7 1 8 5 9 6 10 7 11 5 12 5 13 12 14 2 15 6 16 15 17 9 18 17 19 17 20 5 21 9 22 19 23 5 24 15 25 11 26 4 27 11 28 19 29 28 30 5 31 30 32 21 33 10 34 8 35 3 36 14 37 10 38 26 39 12 40 1 41 27 42 34 43 20 44 14 45 33 46 3 47 19 48 45 49 35 50 32 51 1 52 42 53 9 54 7 55...
output:
57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 57 ...
result:
ok 500001 numbers
Test #7:
score: 0
Accepted
time: 1403ms
memory: 37600kb
input:
500000 500000 2 1 3 2 4 3 5 1 6 5 7 6 8 3 9 6 10 8 11 2 12 4 13 4 14 9 15 10 16 5 17 10 18 11 19 8 20 18 21 18 22 5 23 4 24 7 25 10 26 21 27 25 28 8 29 2 30 20 31 28 32 16 33 32 34 20 35 34 36 3 37 9 38 25 39 21 40 35 41 13 42 20 43 3 44 34 45 2 46 17 47 8 48 12 49 17 50 17 51 49 52 15 53 48 54 27 5...
output:
198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 ...
result:
ok 500001 numbers
Test #8:
score: 0
Accepted
time: 1433ms
memory: 39280kb
input:
500000 500000 2 1 3 2 4 2 5 2 6 3 7 2 8 2 9 4 10 1 11 2 12 10 13 6 14 8 15 5 16 13 17 7 18 1 19 16 20 7 21 9 22 15 23 20 24 6 25 2 26 10 27 6 28 2 29 27 30 6 31 24 32 2 33 4 34 5 35 4 36 31 37 5 38 5 39 17 40 19 41 30 42 40 43 2 44 14 45 25 46 37 47 6 48 46 49 19 50 33 51 11 52 1 53 27 54 7 55 47 56...
output:
290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 290 ...
result:
ok 500001 numbers
Test #9:
score: 0
Accepted
time: 1457ms
memory: 39508kb
input:
500000 500000 2 1 3 1 4 2 5 1 6 5 7 5 8 1 9 8 10 5 11 8 12 4 13 9 14 11 15 10 16 11 17 7 18 17 19 12 20 17 21 9 22 9 23 8 24 21 25 17 26 13 27 5 28 10 29 18 30 4 31 19 32 6 33 18 34 10 35 12 36 19 37 13 38 5 39 10 40 33 41 16 42 18 43 20 44 26 45 19 46 1 47 15 48 17 49 48 50 43 51 40 52 29 53 45 54 ...
output:
40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 ...
result:
ok 500001 numbers
Test #10:
score: 0
Accepted
time: 1460ms
memory: 38316kb
input:
500000 500000 2 1 3 2 4 2 5 4 6 2 7 1 8 1 9 5 10 9 11 3 12 3 13 1 14 9 15 6 16 8 17 3 18 9 19 5 20 5 21 5 22 15 23 15 24 7 25 7 26 9 27 26 28 9 29 1 30 28 31 2 32 20 33 28 34 26 35 16 36 7 37 29 38 33 39 13 40 34 41 35 42 27 43 24 44 10 45 12 46 19 47 11 48 38 49 12 50 18 51 19 52 23 53 6 54 33 55 1...
output:
20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ...
result:
ok 500001 numbers