제출 #977148

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
977148		notyou	Strange Device (APIO19_strange_device)	C++17	0 / 100	274 ms	60920 KiB

strange_device

#include <bits/stdc++.h>

// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>

#define ll long long
#define pb push_back
#define vl vector<ll>
#define fi first
#define se second
#define in insert
#define all(v) v.begin(), v.end()
#define bpc(x) __builtin_popcount(x)
#define endl "\n"

using namespace std;
const ll inf = 1e18;
const ll mod = 1e9 + 7;
const int sz = 4e5 + 5;
const int LG = 21;
// using namespace __gnu_pbds;
// tree <ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> rbt;
ll gcd(ll a, ll b){
    return __gcd(a, b);
}
ll lcm(ll a, ll b){
    return (a * b) / gcd(a, b);
}
void solve(){
    ll n, a, b, i, l, r, s = 0;
    cin >> n >> a >> b;
    for(i = 1; i <= n; i++){
        cin >> l >> r;
        s += (r - l + 1);
    }
    ll lp = lcm(b + 1, a);
    if(lp <= 1e6){
        set<array<ll, 2>> st;
        for(i = l; i < l + lp; i++){
            st.in({(i + (i / b)) % a, i % b});
        }
        cout << st.size() << endl;
        return ;
    }
    lp = (lp / (b + 1) * b);
    s = min(s, lp);
    cout << s << endl;

}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    ll t = 1;
    // cin >> t;
    while(t--){
        solve();
    }
}
/*

4 100
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4 100

60 20
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*/

• 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