Submission #733569

#	Time	Username	Problem	Language	Result	Execution time	Memory
733569		pcc	Fire (JOI20_ho_t5)	C++14	1 / 100	91 ms	10828 KiB

ho_t5

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define int ll
#define pll pair<ll,ll>
#define fs first
#define sc second

const int mxn = 2e5+10;
int arr[mxn];
int brr[mxn];
ll bit[mxn];
int n,q;

void modify(int p,ll v){
	for(;p<mxn;p+=p&-p)bit[p] += v;
	return;
}
ll getval(int s,int e){
	ll re = 0;
	for(;e>0;e-= e&-e)re += bit[e];
	s--;
	for(;s>0;s -= s&-s)re -= bit[s];
	return re;
}

void calc(){
	int l,r,t;
	cin>>t>>l>>r;
	int tmp[n+1];
	for(int i = 1;i<=n;i++)tmp[i] = arr[i];
	while(t--){
		for(int i = n-1;i>=1;i--){
			tmp[i+1] = max(tmp[i+1],tmp[i]);
		}
	}
	ll total = 0;
	for(int i = l;i<=r;i++)total += tmp[i];
	cout<<total<<'\n';
	return;
}

void solve(){
	cin>>n>>q;
	for(int i = 1;i<=n;i++)cin>>arr[i],brr[i] = arr[i];
	/*

   */
	if(n<=200&&q<=200){
		while(q--)calc();
		return;
	}
	ll t = 0;
	pll req[q];
	for(auto &i:req){
		cin>>t;
		cin>>i.fs>>i.sc;
	}
	ll p = 0;
	for(int i = 1;i<=n;i++){
		if(p<=i)p = i;
		while(p<n&&p+1-i<=t&&arr[p]<=arr[i]&&arr[p+1]<=arr[i]){
			p++;
			brr[p] = arr[i];
		}
		//cout<<i<<":"<<p<<endl;
	}
	for(int i = 1;i<=n;i++)modify(i,brr[i]);//cout<<brr[i]<<' ';cout<<endl;
	for(auto &i:req){
		cout<<getval(i.fs,i.sc)<<'\n';
	}
	return;
}

int32_t main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int t = 1;
	while(t--)solve();
}

• Subtask 1: 1 / 1
• Subtask 2: 0 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 6
• Subtask 5: 0 / 80