제출 #568798

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
568798		HappyPacMan	이상한 기계 (APIO19_strange_device)	C++14	20 / 100	801 ms	524288 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll inf = 1e18;

struct Node{
	ll v;
	bool f;
	Node *lf,*rg;
	Node(){
		v = f = false;
		lf = rg = NULL;
	}
};

void upd(Node *i,ll l,ll r,ll ul,ll ur){
	if(ul > r || ur < l){
		return;
	}
	if(ul <= l && r <= ur){
		i->v = r-l+1;
		i->f = true;
		return;
	}
	int m = (l+r)/2;
	if(i->lf == NULL){
		i->lf = new Node();
	}
	if(i->rg == NULL){
		i->rg = new Node();
	}
	if(i->f){
		i->lf->v = m-l+1;
		i->lf->f = true;
		i->rg->v = r-m;
		i->rg->f = true;
	}
	upd(i->lf,l,m,ul,ur);
	upd(i->rg,m+1,r,ul,ur);
	i->v = i->lf->v + i->rg->v;
	if(i->v == r-l+1){
		i->f = true;
	}
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int n;
	ll A,B;
	cin >> n >> A >> B;
	__int128_t LC = (__int128_t)1*A/__gcd(A,B+1)*B;
	ll sum = 0;
	vector<pair<ll,ll> > range;
	for(int i=0;i<n;i++){
		ll li,ri;
		cin >> li >> ri;
		sum += ri-li+1;
		range.emplace_back(li,ri);
	}
	if(LC > (__int128_t)inf){
		cout << sum << '\n';
		return 0;
	}
	ll LCM = A/__gcd(A,B+1)*B;
	Node *root = new Node();
	for(auto [li,ri] : range){
		if(ri/LCM-li/LCM > 1){
			upd(root,0,LCM-1,0,LCM-1);
		}else if(ri/LCM-li/LCM == 1){
			upd(root,0,LCM-1,li%LCM,LCM-1);
			upd(root,0,LCM-1,0,ri%LCM);
		}else{
			upd(root,0,LCM-1,li%LCM,ri%LCM);
		}
	}
	cout << root->v << '\n';
}

컴파일 시 표준 에러 (stderr) 메시지

strange_device.cpp: In function 'int main()':
strange_device.cpp:68:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   68 |  for(auto [li,ri] : range){
      |           ^

• Subtask 1: 10 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30