QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#852182 | #8320. 种树 | namespace000 | 100 ✓ | 1321ms | 28316kb | C++14 | 2.8kb | 2025-01-11 10:32:32 | 2025-01-11 10:32:33 |
Judging History
answer
#include<bits/stdc++.h>
//#define int long long
using namespace std;
const int Max=100+10;
vector<int> G[Max];
int dfn[Max];
string s;
void dfs(int u,int fa){
for(auto v:G[u]){
if(v==fa){
continue;
}
s+="(";
dfs(v,u);
s+=")";
}
}
// unsigned __int128 ejc[Max<<1];
void write(unsigned __int128 x){
if(x>=10){
write(x/10);
}
putchar((char)(x%10+'0'));
}
/*
unsigned __int128 gcd(unsigned __int128 x,unsigned __int128 y){
if(y==0){
return x;
}
return gcd(y,x%y);
}
unsigned __int128 C(int n,int m){
unsigned __int128 x=1;
unsigned __int128 y=1;
for(int i=1;i<=n-m;i++){
x*=(m+i);
y*=i;
int tmp=gcd(x,y);
x/=tmp;
y/=tmp;
}
return x;
}
*/
unsigned __int128 f[Max][Max];
unsigned __int128 g[Max][Max];
unsigned __int128 encoder(int n, const int *p){
for(int i=0;i<=n;i++){
for(int j=0;j<=n;j++){
f[i][j]=0;
}
}
f[n-1][n-1]=1;
for(int i=n-1;i>=0;i--){
for(int j=n-1;j>=0;j--){
if(j+1<=i){
f[i][j]+=f[i][j+1];
}
f[i][j]+=f[i+1][j];
}
}
for(int i=1;i<=n;i++){
G[i].clear();
}
for(int i=2;i<=n;i++){
G[p[i]].push_back(i);
}
s="";
dfs(1,0);
// ejc[0]=1;
// for(int i=1;i<=2*n;i++){
// ejc[i]=ejc[i-1]*i;
// write(ejc[i]);
// cout<<'\n';
// }
unsigned __int128 ans=0;
int nowx=0;
int nowy=0;
int i=1;
for(auto c:s){
if(nowx>nowy&&c=='('){
nowy++;
// unsigned __int128 tmp=C(2*(n-1)-nowx-nowy,(n-1)-nowx)-C(abs((n-1)-(nowy-1))+abs((n-1)-(nowx+1)),abs((n-1)-(nowx+1)));
unsigned __int128 tmp=f[nowx][nowy];
ans+=tmp;
nowy--;
}
if(c=='('){
nowx++;
} else {
nowy++;
}
i++;
// cout<<nowx<<' '<<nowy<<' ';
// write(ans);
// cout<<'\n';
}
return ans;
}
// unsigned __int128 djc[Max*10];
// unsigned __int128 dC(int n,int m){
// return djc[n]/djc[m]/djc[n-m];
// }
void decoder(int n, unsigned __int128 M, int *p){
for(int i=0;i<=n;i++){
for(int j=0;j<=n;j++){
g[i][j]=0;
}
}
g[n-1][n-1]=1;
for(int i=n-1;i>=0;i--){
for(int j=n-1;j>=0;j--){
if(j+1<=i){
g[i][j]+=g[i][j+1];
}
g[i][j]+=g[i+1][j];
}
}
// djc[0]=1;
// for(int i=1;i<=10*n;i++){
// djc[i]=djc[i-1]*i;
// }
string s="";
int nowx=0;
int nowy=0;
for(int i=1;i<=2*(n-1);i++){
if(nowx>nowy){
nowy++;
// unsigned __int128 tmp=C(2*(n-1)-nowx-nowy,(n-1)-nowx)-C(abs((n-1)-(nowy-1))+abs((n-1)-(nowx+1)),abs((n-1)-(nowx+1)));
unsigned __int128 tmp=g[nowx][nowy];
if(tmp<=M){
nowy--;
nowx++;
M-=tmp;
s+="(";
} else {
s+=")";
}
} else {
s+="(";
nowx++;
}
// cout<<"!"<<nowx<<' '<<nowy<<'\n';
}
// cout<<"!"<<s<<'\n';
int now=1;
p[1]=0;
int tot=1;
for(auto c:s){
if(c=='('){
++tot;
p[tot]=now;
now=tot;
} else {
now=p[now];
}
}
}
/*
time:
mem:
*/
详细
Subtask #1:
score: 20
Accepted
Test #1:
score: 20
Accepted
time: 35ms
memory: 6456kb
Manager to Encoder
3000 64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 36 14 30 9 50 27 42 13 18 34 16 12 22 47 94295845827537339262463829429711864 65 0 1 2 2 2 3 1 7 1 8 6 10 8 6 5 1 15 1 6 18 2 6 12 10 14 13 10 9 20 29 1...
Encoder to Manager
3000 64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 36 14 30 9 50 27 42 13 18 34 16 12 22 47 94295845827537339262463829429711864 65 0 1 2 2 2 3 1 7 1 8 6 10 8 6 5 1 15 1 6 18 2 6 12 10 14 13 10 9 20 29 1...
Manager to Decoder
3000 64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 36 14 30 9 50 27 42 13 18 34 16 12 22 47 94295845827537339262463829429711864 65 0 1 2 2 2 3 1 7 1 8 6 10 8 6 5 1 15 1 6 18 2 6 12 10 14 13 10 9 20 29 1...
Decoder to Manager
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 24 24 27 24 24 24 31 24 24 24 24 36 24 24 39 24 24 24 24 24 24 46 24 24 24 24 24 52 24 24 24 56 22 18 16 14 13 12 9 0 1 2 3 4 4 6 4 8 9 10 11 11 10 10 15 9 8 4 19 4 4 2 2 24 25 26 27 27 24 30 2 2 1 34 35 36 37 38 36 36 35 42 35 1 45 4...
result:
ok Right output.
Subtask #2:
score: 15
Accepted
Test #2:
score: 15
Accepted
time: 37ms
memory: 6224kb
Manager to Encoder
3000 66 0 1 1 2 4 2 6 7 3 3 6 9 10 10 13 4 8 12 15 5 18 15 9 13 8 5 17 20 17 16 11 19 18 30 29 22 23 35 37 33 36 27 27 7 23 25 21 46 22 45 40 25 20 43 38 41 34 35 34 29 50 42 47 24 24 40 1242701010161053959992258400520587101 70 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...
Encoder to Manager
3000 66 0 1 1 2 4 2 6 7 3 3 6 9 10 10 13 4 8 12 15 5 18 15 9 13 8 5 17 20 17 16 11 19 18 30 29 22 23 35 37 33 36 27 27 7 23 25 21 46 22 45 40 25 20 43 38 41 34 35 34 29 50 42 47 24 24 40 1242701010161053959992258400520587101 70 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...
Manager to Decoder
3000 66 0 1 1 2 4 2 6 7 3 3 6 9 10 10 13 4 8 12 15 5 18 15 9 13 8 5 17 20 17 16 11 19 18 30 29 22 23 35 37 33 36 27 27 7 23 25 21 46 22 45 40 25 20 43 38 41 34 35 34 29 50 42 47 24 24 40 1242701010161053959992258400520587101 70 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...
Decoder to Manager
0 1 2 3 4 5 5 4 3 9 10 11 11 2 14 15 16 17 18 19 18 21 17 23 24 25 24 23 16 29 30 29 15 14 34 1 36 37 38 39 40 41 39 43 44 44 37 47 48 47 50 51 36 53 54 55 56 55 58 59 60 58 54 63 63 53 0 1 1 1 4 1 1 1 1 9 1 11 12 1 1 1 1 17 18 19 17 21 1 23 23 1 26 1 1 1 1 31 32 31 1 35 1 1 38 39 1 1 42 1 44 45 1 ...
result:
ok Right output.
Subtask #3:
score: 15
Accepted
Test #3:
score: 15
Accepted
time: 1321ms
memory: 27240kb
Manager to Encoder
100000 70 0 1 2 2 2 2 1 2 4 8 3 1 6 12 13 6 1 14 2 8 3 6 2 1 8 25 24 5 10 11 30 28 15 7 23 20 12 29 28 17 31 27 10 18 6 3 38 39 40 43 7 33 23 23 38 28 24 26 57 44 16 18 20 39 9 26 25 16 67 58 305005011106491027045440448941717544033 67 0 1 1 1 1 4 3 4 6 2 10 3 10 7 14 6 11 15 7 13 6 14 18 9 9 4 20 2...
Encoder to Manager
100000 70 0 1 2 2 2 2 1 2 4 8 3 1 6 12 13 6 1 14 2 8 3 6 2 1 8 25 24 5 10 11 30 28 15 7 23 20 12 29 28 17 31 27 10 18 6 3 38 39 40 43 7 33 23 23 38 28 24 26 57 44 16 18 20 39 9 26 25 16 67 58 305005011106491027045440448941717544033 67 0 1 1 1 1 4 3 4 6 2 10 3 10 7 14 6 11 15 7 13 6 14 18 9 9 4 20 2...
Manager to Decoder
100000 70 0 1 2 2 2 2 1 2 4 8 3 1 6 12 13 6 1 14 2 8 3 6 2 1 8 25 24 5 10 11 30 28 15 7 23 20 12 29 28 17 31 27 10 18 6 3 38 39 40 43 7 33 23 23 38 28 24 26 57 44 16 18 20 39 9 26 25 16 67 58 305005011106491027045440448941717544033 67 0 1 1 1 1 4 3 4 6 2 10 3 10 7 14 6 11 15 7 13 6 14 18 9 9 4 20 2...
Decoder to Manager
0 1 2 3 4 5 6 3 3 2 10 11 2 13 14 14 16 16 14 2 20 21 22 23 20 25 25 20 20 2 30 31 32 33 33 31 36 30 38 38 30 41 42 43 42 41 46 2 2 49 49 49 1 53 53 1 56 57 58 59 58 56 1 63 64 1 66 67 66 69 0 1 2 3 4 5 3 7 8 8 8 8 7 7 3 15 2 17 1 19 20 21 22 23 24 23 23 27 21 29 21 20 20 33 20 35 20 37 37 20 20 19...
result:
ok Right output.
Subtask #4:
score: 20
Accepted
Test #4:
score: 20
Accepted
time: 1316ms
memory: 28316kb
Manager to Encoder
100000 68 0 1 1 3 4 4 3 5 7 8 8 10 9 10 11 11 14 15 7 14 13 6 17 6 21 16 20 25 9 2 5 28 25 24 30 32 27 16 23 33 27 26 42 22 15 40 2 22 31 12 47 50 18 12 38 50 39 18 52 34 38 59 56 61 19 46 55 56 12026303059495883086009269677210096790 70 0 1 2 1 2 4 4 3 6 6 7 10 11 5 9 15 13 9 5 11 7 14 22 20 21 21 ...
Encoder to Manager
100000 68 0 1 1 3 4 4 3 5 7 8 8 10 9 10 11 11 14 15 7 14 13 6 17 6 21 16 20 25 9 2 5 28 25 24 30 32 27 16 23 33 27 26 42 22 15 40 2 22 31 12 47 50 18 12 38 50 39 18 52 34 38 59 56 61 19 46 55 56 12026303059495883086009269677210096790 70 0 1 2 1 2 4 4 3 6 6 7 10 11 5 9 15 13 9 5 11 7 14 22 20 21 21 ...
Manager to Decoder
100000 68 0 1 1 3 4 4 3 5 7 8 8 10 9 10 11 11 14 15 7 14 13 6 17 6 21 16 20 25 9 2 5 28 25 24 30 32 27 16 23 33 27 26 42 22 15 40 2 22 31 12 47 50 18 12 38 50 39 18 52 34 38 59 56 61 19 46 55 56 12026303059495883086009269677210096790 70 0 1 2 1 2 4 4 3 6 6 7 10 11 5 9 15 13 9 5 11 7 14 22 20 21 21 ...
Decoder to Manager
0 1 2 3 2 5 1 7 8 9 10 11 12 13 14 15 13 17 17 12 11 21 22 23 24 21 26 27 27 10 30 31 32 32 31 30 36 37 38 36 40 41 40 43 9 45 8 47 48 48 47 51 52 7 54 55 56 57 58 59 60 58 62 63 64 55 54 67 0 1 2 3 4 3 2 7 8 9 10 11 8 13 14 15 13 17 18 7 20 21 21 23 20 1 26 27 28 29 30 31 30 29 28 35 35 27 38 39 4...
result:
ok Right output.
Subtask #5:
score: 30
Accepted
Test #5:
score: 30
Accepted
time: 1304ms
memory: 27596kb
Manager to Encoder
100000 70 0 1 1 3 3 5 4 5 8 8 4 9 11 9 11 14 7 13 2 14 17 15 12 6 18 21 20 22 18 25 7 10 27 22 15 32 30 6 33 38 25 19 10 16 32 36 23 36 41 29 38 17 21 16 45 37 23 24 37 19 30 29 27 42 53 41 2 64 58 40 280331805908364233787653694780827661201 65 0 1 2 3 3 4 2 5 5 6 10 10 8 1 13 5 6 4 4 5 5 15 16 16 6...
Encoder to Manager
100000 70 0 1 1 3 3 5 4 5 8 8 4 9 11 9 11 14 7 13 2 14 17 15 12 6 18 21 20 22 18 25 7 10 27 22 15 32 30 6 33 38 25 19 10 16 32 36 23 36 41 29 38 17 21 16 45 37 23 24 37 19 30 29 27 42 53 41 2 64 58 40 280331805908364233787653694780827661201 65 0 1 2 3 3 4 2 5 5 6 10 10 8 1 13 5 6 4 4 5 5 15 16 16 6...
Manager to Decoder
100000 70 0 1 1 3 3 5 4 5 8 8 4 9 11 9 11 14 7 13 2 14 17 15 12 6 18 21 20 22 18 25 7 10 27 22 15 32 30 6 33 38 25 19 10 16 32 36 23 36 41 29 38 17 21 16 45 37 23 24 37 19 30 29 27 42 53 41 2 64 58 40 280331805908364233787653694780827661201 65 0 1 2 3 3 4 2 5 5 6 10 10 8 1 13 5 6 4 4 5 5 15 16 16 6...
Decoder to Manager
0 1 2 3 4 5 3 2 1 9 10 11 12 13 13 15 12 11 10 19 20 21 22 23 24 24 23 22 28 28 21 31 31 19 34 35 35 34 9 39 40 41 42 40 44 45 44 39 48 49 50 51 51 49 54 55 55 54 58 59 60 59 48 63 64 65 65 64 68 63 0 1 2 3 4 5 6 7 6 6 10 11 11 10 14 10 6 6 5 19 19 21 5 23 5 4 26 4 28 29 30 3 32 33 34 35 36 37 37 3...
result:
ok Right output.