Submission #1201582

#	Time	Username	Problem	Language	Result	Execution time	Memory
1201582		Malix	Strange Device (APIO19_strange_device)	C++20	0 / 100	0 ms	328 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vii;
typedef pair<int,int> pi;
typedef vector<pi> pii;
typedef tuple<int,int,int> ti;
typedef vector<ll> li;
typedef vector<li> lii;
 
#define REP(i,a,b) for(int i=a;i<b;i++)
#define F first
#define S second
#define PB push_back
#define LSOne(s) ((s)&(-s))

ll INF=1000000000000000010;
int inf=1e9+10;
ll M=1e9+7;

int main() {   
// ios::sync_with_stdio(0);
// cin.tie(0);
    int n;ll A,B;cin>>n>>A>>B;
    ll k=A*B;
    vector<pair<ll,ll>> a;
    bool flag=0;
    REP(i,0,n){
        ll x,y;cin>>x>>y;
        if(y%k==0&&x%k==0){
            a.PB({1,k-1});
            flag=1;
        }
        if(y%k==0){
            a.PB({x%k,k-1});
            flag=1;
        }
        else if(x%k==0){
            a.PB({1,y%k});
            flag=1;
        }
        else a.PB({x%k,y%k});
    }
    sort(a.begin(),a.end());
    ll ans=a[0].S-a[0].F+1,l=a[0].S;
    if(flag)ans++;
    int pos=1;REP(i,0,n)
    while(pos<n){
        while(pos<n&&a[pos].S<=l)pos++;
        if(pos==n)break;
        ans+=a[pos].S-max(l,a[pos].F-1);
        l=a[pos].S;
    }
    cout<<ans;
}

• 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