제출 #729551

#제출 시각아이디문제언어결과실행 시간메모리
729551danikoynov이상한 기계 (APIO19_strange_device)C++14
0 / 100
5088 ms524288 KiB
#include<bits/stdc++.h> #define endl '\n' using namespace std; typedef long long ll; void speed() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); } const int maxn = 1e6 + 10; int n; ll l[maxn], r[maxn]; ll A, B; void solve() { cin >> n >> A >> B; for (int i = 1; i <= n; i ++) { cin >> l[i] >> r[i]; } if (n == 1) { ll ans = (r[1] - l[1] + 1); cout << min(ans, A * B) << endl; return; } unordered_set < ll > st; for (int i = 1; i <= n; i ++) { for (ll j = l[i]; j <= r[i]; j ++) { ll x = (j + (j / B)) % A, y = j % B; st.insert({x * B + y}); } } cout << st.size() << endl; } int main() { solve(); return 0; } /** 7 3 4 1 3 4 0 2 3 */
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