Submission #781594

#	Time	Username	Problem	Language	Result	Execution time	Memory
781594		kebine	Strange Device (APIO19_strange_device)	C++17	0 / 100	5065 ms	524288 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define fi first
#define se second
#define pb push_back
#define TC int t; cin>>t; while(t--)
#define all(x) (x).begin(),(x).end()
//*AC BERSAMA ALLAH  FORTIS FORTUNA ADIUVAT
//# nyampah

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    ll n,a,b; 
    cin>>n>>a>>b;

    ll top=a*b;

    set<pair<ll,ll> > mx;
    for(int i=1;i<=top;i++){
        mx.insert(make_pair((i+i/b)%a,(i%b)));
    }
    ll mxs=mx.size();

    set<pair<ll,ll> > sp;
    for(int i=0;i<n;i++){
        ll l,r; cin>>l>>r;
        if(r-l+1>top) {
            cout<<mxs<<'\n';
            return 0;
        }
        for(int j=l;j<=r;j++){
            sp.insert(make_pair((j+j/b)%a,(j%b)));
        }
    }

    cout<<sp.size();

    return 0;
}

• 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