Submission #335089

#	Time	Username	Problem	Language	Result	Execution time	Memory
335089		nicholask	Strange Device (APIO19_strange_device)	C++14	0 / 100	1 ms	364 KiB

strange_device

#include <bits/stdc++.h>
#define int long long
#define x first
#define y second
using namespace std;
signed main(){
	int n,a,b;
	cin>>n>>a>>b;
	pair <int,int> p[n];
	for (int i=0; i<n; i++) cin>>p[i].x>>p[i].y;
	if (n==1){
		__int128 f=p[0].y-p[0].x+1;
		__int128 s=p[0].x*p[0].y/__gcd(p[0].y,(p[0].y+1)%p[0].x);
	} else {
		set <pair <int,int> > s;
		for (int i=0; i<n; i++){
			for (int t=p[i].x; t<=p[i].y; t++) s.insert({(t+t/b)%a,t%b});
		}
		cout<<s.size();
	}
}

Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:12:12: warning: unused variable 'f' [-Wunused-variable]
   12 |   __int128 f=p[0].y-p[0].x+1;
      |            ^
strange_device.cpp:13:12: warning: unused variable 's' [-Wunused-variable]
   13 |   __int128 s=p[0].x*p[0].y/__gcd(p[0].y,(p[0].y+1)%p[0].x);
      |            ^

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