Submission #964821

#	Time	Username	Problem	Language	Result	Execution time	Memory
964821		LCJLY	Strange Device (APIO19_strange_device)	C++14	100 / 100	655 ms	100376 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;	
 
#define int long long 
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << "  " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << "  " << j << " " << #i << "  " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<long long,long long>pii;
typedef pair<int,pii>pi2;

int n,a,b;
int f(int index){	
	return (index+index/b)%a;
}

int f2(int index){
	return index%b;
}

void solve(){
	cin >> n >> a >> b;
	
	__int128 lcm=(__int128)a*(__int128)b/__gcd(a,b+1);
	
	map<int,int>mp;
	
	int temp,temp2;
	for(int x=0;x<n;x++){
		cin >> temp >> temp2;
		int blk=temp/lcm;
		int blk2=temp2/lcm;
		temp%=lcm;
		temp2%=lcm;
		
		if(blk==blk2){
			mp[temp]++;
			mp[temp2+1]--;
		}
		else{
			mp[temp]++;
			mp[lcm]--;
			mp[0]++;	
			mp[temp2+1]--;
		}
	}
	
	int counter=0;
	int last=-1;
	int ans=0;
	for(auto it:mp){
		if(last!=-1&&counter>0){
			ans+=it.first-last;
		}
		counter+=it.second;
		last=it.first;
	}
	cout << ans;
}
 
int32_t main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int t=1;
	//cin >> t;
	while(t--){
		solve();
	}
}

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