Submission #721444

#	Time	Username	Problem	Language	Result	Execution time	Memory
721444		Darren0724	Strange Device (APIO19_strange_device)	C++17	0 / 100	5077 ms	524288 KiB

strange_device

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
const int INF=1e18;

int32_t main(){
    int t;cin>>t;
    int a,b;cin>>a>>b;
    int m=0;
    if(INF/a<b){
        m=INF;
    }
    else{
        m=a*b;
    }
    vector<int> v(m);
    for(int i=0;i<t;i++){
        int l,r;cin>>l>>r;
        if(r-l+1>=m){
            cout<<m<<endl;
            return 0;
        }
        for(int j=l;j<=r;j++){
            v[j%m]=1;
        }
    }
    int ans=0;
    for(int i=0;i<m;i++){
        ans+=v[i];
    }
    cout<<ans<<endl;

    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