Submission #139792

#	Time	Username	Problem	Language	Result	Execution time	Memory
139792		FedericoS	Strange Device (APIO19_strange_device)	C++14	5 / 100	2940 ms	80136 KiB

strange_device

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
typedef long long int ll;
typedef pair<ll,ll> pll;

ll N,A,B;
ll L[1000006],R[1000006];
ll x,y;
vector<pll> S;
vector<pll> V;
ll ans,K;

int main(){
	cin>>N>>A>>B;
	ll M=(A*B);
	for(int i=0;i<N;i++){

		cin>>L[i]>>R[i];
		x=L[i]%M;
		y=R[i]%M;

		if(y<x){
			if(R[i]-L[i]>=M){
				V.push_back({0,1});
				V.push_back({M,-1});
			}
			else{
				V.push_back({0,1});
				V.push_back({y+1,-1});
				V.push_back({x,1});
				V.push_back({M,-1});
			}
		}
		else{
			V.push_back({x,1});
			V.push_back({y+1,-1});
		}
	}

	V.push_back({0,0});
	sort(V.begin(),V.end());


	for(pll p:V){
		if(!S.empty() and p.first==S.back().first)
			S.back().second+=p.second;
		else
			S.push_back(p);
	}

	pll q=*S.begin();
	for(pll p:S){
		if(K) 
			ans+=p.first-q.first;
		K+=p.second;
		q=p;
	}

	cout<<ans;

}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 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