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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 |
---|---|---|---|---|---|---|---|---|---|
#396990 | #6742. Leaves | skulker | TL | 6ms | 23028kb | C++20 | 3.3kb | 2024-04-23 15:16:17 | 2024-04-23 15:16:18 |
Judging History
answer
#pragma GCC optimize(2)
#include<cstdio>
#include<iostream>
#include<cstring>
#include<string>
#include<vector>
using namespace std;
int n,m;
string dp[1100][510];
vector<int> len[1100][510];
int lf[110];
int siz[1100];
vector<int> nex[1100];
string val[1100];
void dfs(int now){
siz[now]=1;
lf[now]=0;
if(nex[now].size()==0){
lf[now]=1;
dp[now][0]=val[now];
len[now][0].push_back(val[now].size());
return ;
}
else {
for(int i=0;i<nex[now].size();i++){
dfs(nex[now][i]);
siz[now]=siz[now]+siz[nex[now][i]];
lf[now]=lf[now]+lf[nex[now][i]];
}
}
int l=nex[now][0],r=nex[now][1];
for(int i=0;i<=(siz[l]-1)/2;i++){
for(int j=0;j<=(siz[r]-1)/2&&i+j<=m;j++){
string s2=dp[l][i]+dp[r][j];
if(dp[now][i+j].size()==0){
dp[now][i+j]=s2;
for(int k=0;k<len[l][i].size();k++){
len[now][i+j].push_back(len[l][i][k]);
}
for(int k=0;k<len[r][j].size();k++){
len[now][i+j].push_back(len[r][j][k]);
}
}
else {
if(dp[now][i+j]>s2) {
dp[now][i+j]=s2;
for(int k=0;k<len[l][i].size();k++){
len[now][i+j].push_back(len[l][i][k]);
}
for(int k=0;k<len[r][j].size();k++){
len[now][i+j].push_back(len[r][j][k]);
}
}
}
}
}
l=nex[now][1],r=nex[now][0];
for(int i=0;i<=(siz[l]-1)/2;i++){
for(int j=0;j<=(siz[r]-1)/2&&i+j+1<=m;j++){
string s2=dp[l][i]+dp[r][j];
if(dp[now][i+j+1].size()==0){
dp[now][i+j+1]=s2;
for(int k=0;k<len[l][i].size();k++){
len[now][i+j+1].push_back(len[l][i][k]);
}
for(int k=0;k<len[r][j].size();k++){
len[now][i+j+1].push_back(len[r][j][k]);
}
}
else {
if(dp[now][i+j+1]>s2) {
dp[now][i+j+1]=s2;
for(int k=0;k<len[l][i].size();k++){
len[now][i+j+1].push_back(len[l][i][k]);
}
for(int k=0;k<len[r][j].size();k++){
len[now][i+j+1].push_back(len[r][j][k]);
}
}
}
}
}
}
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
cin>>n>>m;
int u,v,w;
int opt;
for(int i=1;i<=n;i++){
cin>>opt;
if(opt==1){
cin>>u>>v;
nex[i].push_back(u);
nex[i].push_back(v);
}
else {
cin>>val[i];
}
}
dfs(1);
string ans=dp[1][m];
int pos=m;
for(int i=m-2;i>=0;i-=2){
if(ans>dp[1][i]) {
ans=dp[1][i];
pos=i;
}
}
int k=len[1][pos][0];
int cnt=0;
for(int i=0;i<ans.size();i++){
cout<<ans[i];
k--;
if(k==0){
cout<<" ";
cnt++;
k=len[1][pos][cnt];
}
}
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 21428kb
input:
3 0 1 2 3 2 1 2 2
output:
1 2
result:
ok 2 number(s): "1 2"
Test #2:
score: 0
Accepted
time: 3ms
memory: 23028kb
input:
7 1 1 2 3 1 4 5 1 6 7 2 4 2 2 2 3 2 1
output:
2 4 3 1
result:
ok 4 number(s): "2 4 3 1"
Test #3:
score: 0
Accepted
time: 6ms
memory: 21976kb
input:
7 2 1 2 3 1 4 5 1 6 7 2 4 2 2 2 3 2 1
output:
1 3 4 2
result:
ok 4 number(s): "1 3 4 2"
Test #4:
score: 0
Accepted
time: 3ms
memory: 22568kb
input:
1 0 2 1000000000
output:
1000000000
result:
ok 1 number(s): "1000000000"
Test #5:
score: 0
Accepted
time: 0ms
memory: 22832kb
input:
3 1 1 2 3 2 1 2 2
output:
2 1
result:
ok 2 number(s): "2 1"
Test #6:
score: 0
Accepted
time: 0ms
memory: 22580kb
input:
7 2 1 2 3 1 4 5 1 6 7 2 1 2 2 2 3 2 4
output:
1 2 3 4
result:
ok 4 number(s): "1 2 3 4"
Test #7:
score: -100
Time Limit Exceeded
input:
999 480 1 3 2 1 4 5 1 6 7 1 9 8 1 10 11 1 13 12 1 14 15 1 16 17 1 19 18 1 21 20 1 23 22 1 25 24 1 27 26 1 28 29 1 30 31 1 33 32 1 35 34 1 37 36 1 38 39 1 41 40 1 42 43 1 45 44 1 46 47 1 48 49 1 51 50 1 52 53 1 55 54 1 56 57 1 58 59 1 61 60 1 62 63 1 64 65 1 67 66 1 69 68 1 71 70 1 73 72 1 74 75 1 76...