| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 558280 | Koosha_mv | A Difficult(y) Choice (BOI21_books) | C++14 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
#include "books.h"
const int N=1e5+99;
ll n,t,a[N];
/*
void impossible(){
cout<<"Impossible";
exit(0);
}
void answer(vector<ll> ans){
dbgv(ans);
exit(0);
}
ll skim(ll x){
return a[x];
}*/
void output(vector<pair<ll,ll>> vec){
vector<ll> ans;
for(auto p : vec) ans.pb(p.S);
answer(ans);
}
ll Sum(vector<pair<ll,ll>> vec){
ll sum=0;
for(auto p : vec) sum+=p.F;
return sum;
}
void solve(int n,int k,ll A,int S) {
ll l=0,r=n+1;
while(l+1<r){
ll mid=(l+r)>>1;
if(skim(mid)<=A) l=mid;
else r=mid;
}
vector<pair<ll,ll>> vec1,vec2;
if(r<k){
impossible();
return ;
}
if(k<=l){
f(i,1,k+1) vec1.pb({skim(i),i});
f_(i,l,l-k+1) vec2.pb({skim(i),i});
if(Sum(vec1)<=2*A && A<=Sum(vec2)){
f(i,0,k+1){
vector<pair<ll,ll>> ans;
f(j,0,i) ans.pb(vec1[j]);
f(j,0,k-i) ans.pb(vec2[j]);
if(A<=Sum(ans) && Sum(ans)<=2*A){
output(ans);
return ;
}
}
eror("FUCK");
}
}
if(k==r){
f(i,1,k) vec1.pb({skim(i),i});
}
if(r<=n){
vector<ll> ans;
ll sum=0;
ans.pb(r);
sum+=skim(r);
f(i,0,k-1) ans.pb(vec1[i].S),sum+=vec1[i].F;
if(A<=sum && sum<=2*A){
answer(ans);
return ;
}
}
impossible();
}
/*
int32_t main(){
int n,k,A,S;
cin>>n>>k>>A>>S;
f(i,1,n+1) cin>>a[i];
solve(n,k,A,S);
}*/