Submission #1094878

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094878		Kerim	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	100 / 100	604 ms	93804 KiB

sortbooks

#include "bits/stdc++.h"
#define MAXN 1000009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;
 
typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
int F[MAXN],arr[MAXN],k[MAXN],ans[MAXN];
vector<PII>adj[MAXN];
void upd(int x,int val){
	for(;x;x-=x&(-x))
		umax(F[x],val);	
}
int tap(int x){
	int res=0;
	for(;x<MAXN;x+=x&(-x))
		umax(res,F[x]);
	return res;
}
int main(){
 //   freopen("file.in", "r", stdin);
    int n,q;
    scanf("%d%d",&n,&q);
    for(int i=1;i<=n;i++)
    	scanf("%d",arr+i);
    for(int i=1;i<=q;i++){
   		int l,r;
		scanf("%d%d%d",&l,&r,&k[i]);
		adj[r].pb(mp(l,i));	
    }
    stack<int>st;
	for(int i=1;i<=n;i++){
		while(!st.empty() and arr[st.top()]<=arr[i])
			st.pop();
		if(!st.empty())
			upd(st.top(),arr[st.top()]+arr[i]);
		tr(it,adj[i])
			if(tap(it->ff)<=k[it->ss])
				ans[it->ss]=1;
		st.push(i);
	}
	for(int i=1;i<=q;i++)
		printf("%d\n",ans[i]);
	return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |     scanf("%d%d",&n,&q);
      |     ~~~~~^~~~~~~~~~~~~~
sortbooks.cpp:37:11: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |      scanf("%d",arr+i);
      |      ~~~~~^~~~~~~~~~~~
sortbooks.cpp:40:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |   scanf("%d%d%d",&l,&r,&k[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

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