oj.uz

Submission #370944

# Submission time Handle Problem Language Result Execution time Memory
370944 2021-02-25T06:27:27 Z kshitij_sodani Snowball (JOI21_ho_t2) C++14
100 / 100
 1746 ms 8804 KB 
//#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
#define endl '\n'
llo it[200001];
llo mi[200001];
llo ma[200001];
llo n,q;
vector<llo> ss;
bool check(llo mid,llo i){
	if(mid==0){
		return false;
	}
	if(mi[q-1]>0){
		return false;
	}
	if(-mi[q-1]<mid){
		return false;
	}
	//return true;
	llo ind=q-1;
	for(llo j=19;j>=0;j--){
		if(ind-(1<<j)>=0){
			if(mi[ind-(1<<j)]<=0 and (-mi[ind-(1<<j)])>=mid){
				ind-=(1<<j);
			}
		}
	}
	if(i==0){
		return true;
	}
	if((mid)>it[i]-it[i-1]){
		return false;
	}
	//cout<<i<<":"<<mid<<endl;
	//return true;
	if(ind==0){
		return true;
	}
	if(ma[ind-1]+it[i-1]<=it[i]-mid){
		return true;
	}
	return false;

}
bool check2(llo mid,llo i){

	if(mid==0){
		return false;
	}
	if(ma[q-1]<0){
		return false;
	}
	if(ma[q-1]<mid){
		return false;
	}

	//return true;
	llo ind=q-1;
	for(llo j=19;j>=0;j--){
		if(ind-(1<<j)>=0){
			if((ma[ind-(1<<j)])>=mid){
				ind-=(1<<j);
			}
		}
	}
/*	if(i==0){
		cout<<mid<<"::"<<ind<<endl;
	}*/
	/*if(mid==5 and i==0){
		cout<<11<<"::"<<endl;
	}*/
	if(i==n-1){
		return true;
	}
	if((mid)>it[i+1]-it[i]){
		return false;
	}
	//cout<<i<<":"<<mid<<endl;
	//return true;
	if(ind==0){
		return true;
	}

	if(mi[ind-1]+it[i+1]>=it[i]+mid){
		return true;
	}
	return false;

}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	
	cin>>n>>q;
	for(llo i=0;i<n;i++){
		cin>>it[i];
	}
	/*llo q;
	cin>>q;*/
	llo su=0;
	for(llo i=0;i<q;i++){
		llo aa;
		cin>>aa;
		su+=aa;
		ss.pb(su);
	}
	mi[0]=ss[0];
	ma[0]=ss[0];
	for(llo i=1;i<ss.size();i++){
		mi[i]=min(mi[i-1],ss[i]);
		ma[i]=max(ma[i-1],ss[i]);
	}
/*	for(llo i=0;i<q;i++){
		cout<<mi[i]<<":";
	}
	cout<<endl;*/
	for(llo i=0;i<n;i++){
		llo low=0;
		llo high=1e18;
		while(low<high-1){
			llo mid=(low+high)/2;
			if(check(mid,i)){
				low=mid;
			}
			else{
				high=mid;
			}
		}
		llo ind=low;
		if(check(high,i)){
			ind=max(ind,high);
		}
		//cout<<ind<<":"<<endl;
		low=0;
		high=1e18;
		while(low<high-1){
			llo mid=(low+high)/2;
			if(check2(mid,i)){
				low=mid;
			}
			else{
				high=mid;
			}
		}
		llo ind2=low;
		if(check2(high,i)){
			ind2=max(ind2,high);
		}
		cout<<ind+ind2<<endl;
	}







 
	return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:115:15: warning: comparison of integer expressions of different signedness: 'llo' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |  for(llo i=1;i<ss.size();i++){
      |              ~^~~~~~~~~~

Subtask #1
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 2 ms 364 KB Output is correct
4 Correct 8 ms 492 KB Output is correct
5 Correct 7 ms 492 KB Output is correct
6 Correct 5 ms 492 KB Output is correct
7 Correct 5 ms 492 KB Output is correct
8 Correct 5 ms 492 KB Output is correct
9 Correct 4 ms 492 KB Output is correct
10 Correct 3 ms 492 KB Output is correct
11 Correct 2 ms 492 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 9 ms 492 KB Output is correct
16 Correct 8 ms 492 KB Output is correct
17 Correct 8 ms 492 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 3 ms 492 KB Output is correct

Subtask #2
67.0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 2 ms 364 KB Output is correct
4 Correct 8 ms 492 KB Output is correct
5 Correct 7 ms 492 KB Output is correct
6 Correct 5 ms 492 KB Output is correct
7 Correct 5 ms 492 KB Output is correct
8 Correct 5 ms 492 KB Output is correct
9 Correct 4 ms 492 KB Output is correct
10 Correct 3 ms 492 KB Output is correct
11 Correct 2 ms 492 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 9 ms 492 KB Output is correct
16 Correct 8 ms 492 KB Output is correct
17 Correct 8 ms 492 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 3 ms 492 KB Output is correct
20 Correct 33 ms 5220 KB Output is correct
21 Correct 32 ms 5220 KB Output is correct
22 Correct 32 ms 5220 KB Output is correct
23 Correct 46 ms 5352 KB Output is correct
24 Correct 191 ms 5476 KB Output is correct
25 Correct 1455 ms 8804 KB Output is correct
26 Correct 1518 ms 8548 KB Output is correct
27 Correct 1340 ms 8164 KB Output is correct
28 Correct 1330 ms 8292 KB Output is correct
29 Correct 1297 ms 7984 KB Output is correct
30 Correct 827 ms 7524 KB Output is correct
31 Correct 312 ms 7112 KB Output is correct
32 Correct 159 ms 7140 KB Output is correct
33 Correct 99 ms 1264 KB Output is correct
34 Correct 1746 ms 8384 KB Output is correct
35 Correct 1423 ms 8164 KB Output is correct
36 Correct 1522 ms 8304 KB Output is correct
37 Correct 1446 ms 8220 KB Output is correct
38 Correct 1382 ms 8116 KB Output is correct
39 Correct 1458 ms 8124 KB Output is correct
40 Correct 1159 ms 8164 KB Output is correct
41 Correct 134 ms 5220 KB Output is correct
42 Correct 134 ms 7092 KB Output is correct
43 Correct 1169 ms 8580 KB Output is correct
44 Correct 43 ms 5220 KB Output is correct
45 Correct 717 ms 8224 KB Output is correct
46 Correct 892 ms 8580 KB Output is correct
47 Correct 1164 ms 8572 KB Output is correct
48 Correct 748 ms 8420 KB Output is correct