Submission #976785

#	Time	Username	Problem	Language	Result	Execution time	Memory
976785		AIF_is_carving	Strange Device (APIO19_strange_device)	C++17	15 / 100	5033 ms	524288 KiB

strange_device

#include <bits/stdc++.h>
 
typedef long long ll;
using namespace std;

void solve(){

    set<pair<ll, ll>> s;
    ll n, A, B; cin>>n>>A>>B;
    if(n>1){
        for(int i=0; i<n; i++){
            ll x, y; cin>>x>>y;
            for(ll t = x; t<=y; t++){
                ll p = (t+(t/B))%A;
                ll q = t%B;

                s.insert({p,q});
            }
        }

        cout<<s.size()<<"\n";
    }
    else{
        //ll n, A, B; cin>>n>>A>>B;
        ll x, y; cin>>x>>y;
        ll X = A/(gcd(B+1, A));

        ll t;

        int powX=0, powB=0;
        ll xxx = X;
        while(xxx>0){
            xxx/=2;
            powX+=1;
        }
        xxx=B;
        while(xxx>0){
            xxx/=2;
            powB+=1;
        }

        if(powB+powX>61) t=2e18;
        else t = B*X;

        cout<<min<ll>(y-x+1, t)<<"\n";

    }
    

    return;

}

int main(){   
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int t=1; //cin>>t;

    while(t--){
        solve();
    }

    return 0;

}
 

• Subtask 1: 10 / 10
• Subtask 2: 5 / 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