Submission #204578

#	Time	Username	Problem	Language	Result	Execution time	Memory
204578		Sho10	Strange Device (APIO19_strange_device)	C++14	10 / 100	5072 ms	524292 KiB

strange_device

/*
ID: Sho10
LANG: C++
*/
#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long int
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define sz size
#define f first
#define s second
#define pb push_back
#define er erase
#define in insert
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod 1000000007
#define PI 3.14159265359
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll n,a,b,l,r,ans=0;
map<pair<ll,ll>,ll>m;
int32_t main(){
CODE_START;
cin>>n>>a>>b;
while(n--){
cin>>l>>r;
for(ll i=l;i<=r;i++)
{
ll x,y;
x=(i+i/b)%a;
y=i%b;
if(m[{x,y}]==0){
    ans++;
}
m[{x,y}]=1;
}
}
cout<<ans<<endl;
}

• Subtask 1: 10 / 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