Submission #1068719

#	Time	Username	Problem	Language	Result	Execution time	Memory
1068719		alexdd	Strange Device (APIO19_strange_device)	C++17	10 / 100	5064 ms	524288 KiB

strange_device

#include<bits/stdc++.h>
using namespace std;
#define int long long
int gcd(int x, int y)
{
    while(x>0)
    {
        int r = y%x;
        y=x;
        x=r;
    }
    return y;
}
map<pair<int,int>,int> mp;
signed main()
{
    int n,A,B,cnt=0,B1;
    cin>>n>>A>>B;
    int gc = gcd(A,B+1);
    A /= gc;
    B1 = (B+1)/gc;
    int le,ri;
    for(int i=1;i<=n;i++)
    {
        cin>>le>>ri;
        for(int t=le;t<=ri;t++)
        {
            int p = t/B;
            pair<int,int> aux = {(B1*p)%A, t%B};
            if(mp[aux]==0)
            {
                mp[aux]++;
                cnt++;
            }
        }
    }
    cout<<cnt;
    return 0;
}

• 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