Submission #972889

#	Time	Username	Problem	Language	Result	Execution time	Memory
972889		Unforgettablepl	Strange Device (APIO19_strange_device)	C++17	0 / 100	5012 ms	524288 KiB

strange_device

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

#define int long long

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,A,B;
    cin >> n >> A >> B;
    int modulus;
    bool edgecase = false;
    if((B+1)%A==0){
        modulus = B;
    } else {
        modulus = A*B;
        if(INT64_MAX/A<B or INT64_MAX/B<A)edgecase=true;
    }
    int totalsum = 0;
    set<int> answers;
    for(int i=1;i<=n;i++){
        int l,r;cin>>l>>r;
        for(int x=l;x<=r;x++){
            totalsum++;
            answers.insert(x%modulus);
        }
    }
    if(edgecase)cout << totalsum << '\n';
    else cout << answers.size() << '\n';
}

• 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