QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#785076 | #6660. 택시 여행 | ktq_cpp | 0 | 132ms | 39108kb | C++14 | 4.4kb | 2024-11-26 16:46:59 | 2024-11-26 16:47:00 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
using namespace std;
int n;
const int N=1e5+5;
const ll inf=5e18;
struct Car{
ll x;
int y,id;
}a[N];
vector<pair<int,int>> G[N];
bool vis[N];
int sz[N],mx[N],all,rt;
int dep[N];
ll dis[N];
int dfn[N],mi[20][N],rnk[N],dfncnt;
int Fa[N];
int get(int x,int y){
return dfn[x]<dfn[y]? x:y;
}
void init(int u,int fa){
dep[u]=dep[fa]+1;
mi[0][dfn[u]=++dfncnt]=fa;
for(auto ed:G[u]){
int v=ed.first,w=ed.second;
if(v==fa)continue;
dis[v]=dis[u]+w;
init(v,u);
}
return;
}
void calc(int u,int fa){
sz[u]=1,mx[u]=0;
for(auto ed:G[u]){
int v=ed.first;
if(v==fa||vis[v])continue;
calc(v,u);
mx[u]=max(mx[u],sz[v]);
sz[u]+=sz[v];
}
mx[u]=max(mx[u],all-sz[u]);
if(!rt||mx[rt]>mx[u])rt=u;
return;
}
void dfs(int u,int fa){
Fa[u]=fa;
vis[u]=1;
// cout<<u<<' '<<fa<<endl;
for(auto ed:G[u]){
int v=ed.first;
if(v==fa||vis[v])continue;
rt=0;
all=sz[v];
calc(v,u);
calc(rt,u);
dfs(rt,u);
}
return;
}
ll dp[N];
struct Point{
ll x,y;
ll operator[](ll k){
return y-x*k;
}
};
struct LINE{
vector<Point> stk;
bool check(Point x,Point y,Point z){
return 1.*(y.y-x.y)*(z.x-y.x)>1.*(z.y-y.y)*(y.x-x.x);
}
bool check(Point x,Point y,ll k){
return 1.*(y.y-x.y)>1.*k*(y.x-x.x);
}
void add(Point x){
//cout<<x.x<<' '<<x.y<<endl;
int top=(int)stk.size();
while(top>=1&&stk[top-1].y>x.y)--top,stk.pop_back();
if(top&&stk[top-1].y<=x.y){
return;
}
while(top>=2&&check(stk[top-2],stk[top-1],x)){
--top;stk.pop_back();
}
stk.push_back(x);
return;
}
ll query(ll k){
if(stk.empty())return inf;
int l=0,r=(int)stk.size()-2,res=(int)stk.size()-1;
while(l<=r){
int mid=l+r>>1;
if(check(stk[mid],stk[mid+1],k))r=mid-1,res=mid;
else l=mid+1;
}
// cout<<k<<' '<<res<<' '<<' '<<stk[res].x<<' '<<stk[res].y<<' '<<stk[res][k]<<' '<<check(stk[1],stk[2],k)<<'\n';
return stk[res][k];
}
}L[N];
int lca(int u,int v){
if(u==v)return u;
u=dfn[u],v=dfn[v];
if(u>v)swap(u,v);
int len=__lg(v-u++);
return get(mi[len][u],mi[len][v-(1<<len)+1]);
}
ll get_dis(int x,int y){
return dis[x]+dis[y]-dis[lca(x,y)]*2;
}
namespace PointmasTree{
ll solve(int u){
ll mn=inf;
int x=u;
while(x){
mn=min(mn,L[x].query(get_dis(u,x)));
x=Fa[x];
}
return mn;
}
void add(int u,ll X,ll Y){
int x=u;
while(x){
L[x].add({-Y,dp[u]+X+Y*get_dis(u,x)});
x=Fa[x];
}
return;
}
}
vector<long long> travel(vector<long long> A, vector<int> B, vector<int> U,vector<int> V, vector<int> W){
n=(int)A.size();
for(int i=1;i<=n;i++){
a[i].x=A[i-1],a[i].y=B[i-1],a[i].id=i;
}
sort(a+1,a+n+1,[&](Car a,Car b){
return a.y>b.y;
});
for(int i=0;i<n-1;i++){
G[U[i]+1].push_back({V[i]+1,W[i]});
G[V[i]+1].push_back({U[i]+1,W[i]});
}
all=n,rt=0;
init(1,0);
calc(1,0);
dfs(1,0);
for(int j=1;(1<<j)<=n;j++){
for(int i=1;i+(1<<j)-1<=n;i++){
mi[j][i]=get(mi[j-1][i],mi[j-1][i+(1<<j-1)]);
}
}
for(int i=2;i<=n;i++)dp[i]=inf;
bool flag=0;
for(int i=1;i<=n;i++){
if(a[i].id!=1)dp[a[i].id]=PointmasTree::solve(a[i].id);
else flag=1;
if(flag)PointmasTree::add(a[i].id,a[i].x,a[i].y);
}
// cout<<'\n';
// for(int i=1;i<=n;i++){
// cout<<dp[i]<<' ';
// }
// cout<<'\n';
vector<ll> ans;
ans.resize(n-1,0);
for(int i=2;i<=n;i++){
ans[i-2]=PointmasTree::solve(i);
}
return ans;
}
#ifndef ONLINE_JUDGE
signed main(){
int NN;
scanf("%d",&NN);
vector<ll> A;
vector<int> B,U,V,W;
for(int i=1;i<=NN;i++){
ll x;
scanf("%lld",&x);
A.push_back(x);
}
for(int i=1;i<=NN;i++){
int x;
scanf("%d",&x);
B.push_back(x);
}
for(int i=1,u,v,w;i<NN;i++){
scanf("%d %d %d",&u,&v,&w);
U.push_back(u);
V.push_back(v);
W.push_back(w);
}
vector<ll> ans=travel(A,B,U,V,W);
for(int i=0;i<NN-1;i++)printf("%lld\n",ans[i]);
return 0;
}
/*
input:
5
10 5 13 4 3
10 7 5 9 1
1 0 1
0 2 5
3 2 10
2 4 3
output:
20
60
104
88
*/
/*
input:
10
422984347234 607725142104 92118155366 486587956717 857158857503 799145939144 657596100723 796939845406 986487843217 23702497547
410761 491391 858697 690385 801672 657901 640039 950942 514882 665242
0 1 736069
1 2 871348
2 3 300958
3 4 249899
4 5 977539
5 6 867002
6 7 648549
7 8 891403
8 9 132040
output:
725332785743
1083248561571
1206870370609
1309519133748
1711054030927
2067184639449
2333583275238
2699736862921
2753973745361
*/
#endif
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 7
Accepted
time: 3ms
memory: 16264kb
input:
2 684124582850 713748627948 74361 256955 0 1 661088
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 733283747618 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
ok 3 lines
Test #2:
score: 7
Accepted
time: 0ms
memory: 13212kb
input:
3 251115773325 363097865287 358609487841 826785 213106 914768 0 1 851938 2 0 231697
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 955485332655 442679377470 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
ok 4 lines
Test #3:
score: 7
Accepted
time: 2ms
memory: 12724kb
input:
3 489998888627 318672977903 70353752652 258347 458793 258657 2 1 156120 0 2 524840
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 665922861747 625589728107 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
ok 4 lines
Test #4:
score: 7
Accepted
time: 2ms
memory: 13116kb
input:
3 737471938521 315388610250 818943569900 726908 666797 564862 0 1 460302 0 2 785280
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 1072069144737 1308298252761 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
ok 4 lines
Test #5:
score: 7
Accepted
time: 0ms
memory: 16180kb
input:
4 201836820267 208957719162 992553400562 566050337171 243994 65303 590123 936951 1 0 259719 0 3 860376 3 2 513584
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 265206697953 537074816507 411763402011 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
ok 5 lines
Test #6:
score: 7
Accepted
time: 2ms
memory: 13404kb
input:
4 440719935569 160237864481 704297665373 767778991240 451998 371509 46564 828427 1 0 861960 1 3 830699 2 3 185693
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 830324131649 1289731282865 1205798418251 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
ok 5 lines
Test #7:
score: 7
Accepted
time: 2ms
memory: 12992kb
input:
5 148262899914 9382086008 622202345986 443806901161 213829280326 178155 503016 333953 572340 461148 0 3 453941 3 2 84057 4 0 171136 3 1 598794
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 335812903839 244109933604 229134758769 178751633994 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
ok 6 lines
Test #8:
score: 7
Accepted
time: 0ms
memory: 14552kb
input:
5 391440982512 969252165920 333946610796 649830522527 902812044171 522045 996458 225429 545971 667483 0 1 701500 0 4 514779 2 1 435377 3 0 919439
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 757655550012 984941935977 871429515267 660178785567 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
ok 6 lines
Test #9:
score: 0
Wrong Answer
time: 2ms
memory: 14712kb
input:
17 315015458526 65513576283 829720084774 654640079244 561177336848 463903843105 496216524512 837433489064 92734412345 807145138979 250511786518 915329126804 373916658654 78276842047 121976569238 432447179015 519384539551 696133 642473 231377 987220 589587 337763 790202 785083 249580 108311 73808 892...
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 430639669161 417840567823 403532946274 854701616505 811025535952 634227941809 877731088411 1019176960415 796723483467 1008215650197 474661031682 536446316097 411867746683 749241643803 907444829383 704895883304 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
wrong answer 5th lines differ - expected: '499079112962', found: '854701616505'
Subtask #2:
score: 0
Wrong Answer
Test #31:
score: 0
Wrong Answer
time: 132ms
memory: 39108kb
input:
100000 746699125678 374834842799 250803643493 620187038832 454433387570 406226564003 897157438699 99473514061 734784419618 503968957100 363935477037 277126009840 52078020050 990757079812 847235285349 950784717285 271017141367 861087225700 996035427219 520682200664 282013988419 415183977876 882007771...
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 1148030742334 1636760433058 2131282232650 2353514637869 2672707119337 2763307672337 3098778933881 3394578915089 3373983453657 3310294335369 3259024225551 3214001638323 3269286229765 3273106480907 3287227043365 3335909595067 3361857042147 3364657567217 338173015...
result:
wrong answer 8th lines differ - expected: '2948215735597', found: '3098778933881'
Subtask #3:
score: 0
Skipped
Dependency #1:
0%
Subtask #4:
score: 0
Wrong Answer
Test #69:
score: 0
Wrong Answer
time: 68ms
memory: 31480kb
input:
100000 15175010 23519365 21177669 27079342 9089 16784452 29693960 23124925 17048604 10179491 12828214 24992902 8483134 2928073 23807522 7332137 17421520 28460746 1607282 13224363 11900728 11794692 11495061 4687109 23460275 7657982 27417256 16978162 7326803 23083826 24942987 16610314 12147303 2828271...
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 30113234 22883136 19218106 26408485 17905682 22367858 20984498 27617064 32407418 25650594 23972028 25461624 24211887 20541602 26253444 25062052 19996674 23776338 20744026 24560292 24816302 22084651 24875520 27296048 27062524 20197570 21874766 17777680 28359675 ...
result:
wrong answer 2nd lines differ - expected: '16705757', found: '30113234'
Subtask #5:
score: 0
Wrong Answer
Test #94:
score: 0
Wrong Answer
time: 62ms
memory: 33544kb
input:
99281 551670361798 568902251563 418071776626 697635341894 641578820039 117221079324 812766431051 425410617978 663769685693 282144284527 799662290178 749088952784 586626406385 122473825417 459510657357 871705247919 443707710712 735612808044 237919555727 829939639783 122127143240 616906466299 24431898...
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I 1265214182501 1084761749195 815372978193 1066576858355 730621710202 711602659484 1192547912029 1265214182501 1074090100284 1038775022720 1077624511454 1203365215939 877776779170 1011092365152 1203365215939 1038775022720 1038775022720 738705116189 1053912734012 ...
result:
wrong answer 2nd lines differ - expected: '598598746654', found: '1265214182501'
Subtask #6:
score: 0
Skipped
Dependency #1:
0%