제출 #130298

#제출 시각아이디문제언어결과실행 시간메모리
130298osaaateiasavtnl이상한 기계 (APIO19_strange_device)C++14
0 / 100
2 ms376 KiB
#include<bits/stdc++.h> using namespace std; #define int long long int n, A, B, D; int get(int n) { return n - (n - 1) / D; } signed main() { #ifdef HOME freopen("input.txt", "r", stdin); #else ios_base::sync_with_stdio(0); cin.tie(0); #endif cin >> n >> A >> B; D = A / __gcd(A, B + 1); if (n != 1) { exit(1); } { int l, r; cin >> l >> r; if (l / B == r / B) { cout << r - l + 1 << '\n'; exit(0); } int l1 = ((l + B - 1) / B) * B; int r1 = (r / B) * B - 1; int c = 0; if (l1 <= r1) { c = (r1 - l1 + 1) / B; } // [l % B; B - 1] // [0; r % B] int tl = r % B, tr = l % B; if (tl < tr) { int len = tr - tl - 1; cout << get(c) * len + get(c + 1) * (B - len) << '\n'; } else { int len = tl - tr + 1; cout << get(c + 2) * len + get(c + 1) * (B - len) << '\n'; } } }
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