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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#518425 | #7523. Partially Free Meal | KLPP# | TL | 1ms | 5744kb | C++17 | 3.0kb | 2024-08-13 20:26:06 | 2024-08-13 20:26:06 |
Judging History
answer
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef long long int lld;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define trav(a,v) for(auto a:v)
int n;
vector<pair<lld,lld> >V;
vector<int> per;
ordered_set O;
int ptr;
class FT{
lld arr[1'000'000];
int N;
public:
void init(){
N=n;
rep(i,0,N+1)arr[i]=0;
}
void upd(int pos,lld val){
pos+=1;
for(;pos<=N;pos+=(pos&(-pos)))arr[pos]+=val;
}
lld query(int pos){
pos++;
lld ans=0;
for(;pos>0;pos-=(pos&(-pos))){
ans+=arr[pos];
}
return ans;
}
};
FT F;
class FT2{
int arr[1'000'000];
int N;
public:
void init(){
N=n;
rep(i,0,N+1)arr[i]=0;
}
void upd(int pos,int val){
pos+=1;
for(;pos<=N;pos+=(pos&(-pos)))arr[pos]+=val;
}
int query(int k){
//cout<<k<<"\n";
//rep(i,0,N+1)cout<<arr[i]<<" ";
//cout<<endl;
int pot=(1<<30);
int pos=0;
int cur=k;
while(pot>0){
if(pot+pos<=N){
int nxt=cur-arr[pot+pos];
if(nxt>=0){
cur=nxt;
pos+=pot;
}
}
pot/=2;
}
return pos;
}
};
FT2 F2;
void adv(){
ptr++;
O.insert(per[ptr]);
//cout<<"+ "<<per[ptr]<<" "<<V[ptr].second<<endl;
//F2.upd(per[ptr],1);
F.upd(per[ptr],V[ptr].second);
}
void ret(){
//cout<<"- "<<per[ptr]<<" "<<V[ptr].second<<endl;
F.upd(per[ptr],-V[ptr].second);
O.erase(per[ptr]);
//F2.upd(per[ptr],-1);
ptr--;
}
lld query(int k){
int x=*O.find_by_order(k-1);
//int x=F2.query(k-1);
//cout<<k<<" "<<x<<" "<<F.query(x)<<endl;
return F.query(x);
}
vector<lld> res;
void divideandconquer(int l, int r, int optl,int optr){
if(l>r){
while(ptr<optr)adv();
assert(ptr==optr);
return;
}
//pointer at optl-1
int mid=(l+r)/2;
pair<lld,int> ans={1e18,-1};
for(int pos=optl;pos<=optr;pos++){
adv();
assert(ptr==pos);
if(pos+1>=mid){
//cout<<query(mid)<<" X "<<V[pos].first<<endl;
pair<lld,int> can={query(mid)+V[pos].first,pos};
ans=min(ans,can);
}
}
for(int pos=optl;pos<=optr;pos++){
ret();
}
//cout<<ans.first<<" F "<<ans.second<<" F "<<mid<<"\n";
res[mid]=ans.first;
int opt=ans.second;
divideandconquer(l,mid-1,optl,opt);
ret();
divideandconquer(mid+1,r,opt,optr);
assert(ptr==optr);
}
void solve(){
cin>>n;
F.init();
F2.init();
V.resize(n);
rep(i,0,n){
cin>>V[i].second>>V[i].first;
}
sort(V.begin(),V.end());
vector<pair<lld,lld>> X(n);
rep(i,0,n){
X[i].first=V[i].second;
X[i].second=i;
}
sort(X.begin(),X.end());
per.resize(n);
rep(i,0,n){
per[X[i].second]=i;
}
ptr=-1;
res.resize(n+1);
divideandconquer(1,n,0,n-1);
lld sum=0;
//rep(i,0,10){
//sum+=V[i].second;
//}cout<<sum<<"\n";
rep(i,1,n+1)cout<<res[i]<<"\n";
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
int tt=1;
//cin>>tt;
while(tt--){
solve();
}
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 5744kb
input:
3 2 5 4 3 3 7
output:
7 11 16
result:
ok 3 lines
Test #2:
score: -100
Time Limit Exceeded
input:
200000 466436993 804989151 660995237 756645598 432103296 703610564 6889895 53276988 873617076 822481192 532911431 126844295 623111499 456772252 937464699 762157133 708503076 786039753 78556972 5436013 582960979 398984169 786333369 325119902 930705057 615928139 924915828 506145001 164984329 208212435...