Submission #781706

#	Time	Username	Problem	Language	Result	Execution time	Memory
781706		makanhulia	이상한 기계 (APIO19_strange_device)	C++17	0 / 100	3692 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

ll gcd(ll a, ll b){
    if(b==0) return a;
    return gcd(b,a%b);
}

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

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

    vector<bool> freq(1000005);
    set<pair<ll,ll> > sp;
    vector<bool> dif(1000005,1);
    for(int i=1;i<=a*b;i++){
        int idx=i;
        if(i==a*b) idx=0; 
        if(sp.count(make_pair((i+i/b)%a,i%b))){
            dif[idx]=0;
        }
        else sp.insert(make_pair((i+i/b)%a,i%b));
    }
    for(int i=1;i<=n;i++){
        int l,r; cin>>l>>r;
        if(r-l>a*b) r=l+a*b;
        for(int j=l;j<=r;j++){
            freq[j%(a*b)]=1;
        }
    }
    int cnt=0;
    for(int i=0;i<1000000;i++){
        if(freq[i] && dif[i]) {
            cnt++;
        }
    }
    cout<<cnt<<'\n';


    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