Submission #341760

#	Time	Username	Problem	Language	Result	Execution time	Memory
341760		blacktulip	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	0 / 100	963 ms	58092 KiB

sortbooks

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long lo;
typedef pair< lo,lo > PII;
 
#define fi first
#define se second
#define int long long
#define mp make_pair
#define endl "\n"
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=0;i<n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
 
const lo inf = 3000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 1000005;
const lo mod = 1000000007;
 
int n,m,b[li],a[li],k,flag,t,maxi[li],mx,dp[li],mini[li],tree[li*4],anss[li];
int cev;
pair<int,pair<int,pair<int,int>>> p[li];
string s;
vector<int> v[1005];
 
inline void update(int node,int start,int end,int l,int r,int val){
	if(start>end || start>r || end<l)return ;
	if(start>=l && end<=r){tree[node]=val;return ;}
	update(node*2,start,mid,l,r,val),update(node*2+1,mid+1,end,l,r,val);
	tree[node]=max(tree[node*2],tree[node*2+1]);
}
 
inline int query(int node,int start,int end,int l,int r){
	if(start>end || start>r || end<l)return 0;
	if(start>=l && end<=r)return tree[node];
	return max(query(node*2,start,mid,l,r),query(node*2+1,mid+1,end,l,r));
}
 
int32_t main(void){
    scanf("%lld %lld",&n,&t);
	for(int i=1;i<=n;i++)scanf("%lld",&a[i]);
	for(int i=1;i<=t;i++){
		scanf("%lld %lld %lld",&p[i].fi,&p[i].se.fi,&p[i].se.se.fi);
		p[i].se.se.se=i;
	}
	sort(p+1,p+t+1);
	reverse(p+1,p+t+1);
	stack<pair<int,int>> st;
	int ind=t;
	for(int i=n;i>=1;i--){
		int son=i;
		while(st.size() && a[i]>st.top().fi){
			update(1,1,n,son+1,son+1,a[i]+st.top().fi);
			//~ cout<<a[i]+st.top().fi<<endl;
			son=st.top().se;
			st.pop();
		}
		if(st.size()==0)son=n;
		st.push({a[i],son});
		if(p[ind].fi==i){
			if(query(1,1,n,i,p[ind].se.fi)<=p[ind].se.se.fi)anss[p[ind].se.se.se]=1;
		}
	}
	for(int i=1;i<=t;i++)printf("%lld\n",anss[i]);
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'int32_t main()':
sortbooks.cpp:48:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   48 |     scanf("%lld %lld",&n,&t);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
sortbooks.cpp:49:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   49 |  for(int i=1;i<=n;i++)scanf("%lld",&a[i]);
      |                       ~~~~~^~~~~~~~~~~~~~
sortbooks.cpp:51:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   51 |   scanf("%lld %lld %lld",&p[i].fi,&p[i].se.fi,&p[i].se.se.fi);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23