Submission #663056

#	Time	Username	Problem	Language	Result	Execution time	Memory
663056		Ai7081	이상한 기계 (APIO19_strange_device)	C++17	0 / 100	412 ms	16872 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll, ll>

const ll inf = 1e18+5;

ll n, a, b, loop, l, r, out;
vector<pii> v;

ll gcd(ll c1, ll c2) {
    if (!(max(c1,c2)%min(c1,c2))) return min(c1, c2);
    return gcd(min(c1,c2), max(c1,c2)%min(c1,c2));
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> a >> b;
    a/=gcd(a,b+1);
    while (a>0) {
        loop += (a%10)*b;
        if (loop>inf) break;
        a/=10;
    }
    while (n--) {
        cin >> l >> r, l%=loop, r%=loop;
        if (l>r) v.push_back({0,r}), v.push_back({l,loop-1});
        else v.push_back({l,r});
    }
    sort(v.begin(), v.end(), greater<pii>());
    while (v.size()>=2) {
        pii x=v.back(); v.pop_back();
        pii y=v.back();
        if (x.second >= y.first) v.pop_back(), v.push_back({x.first, max(x.second, y.second)});
        else out+=x.second-x.first+1;
    }
    cout << out + v[0].second-v[0].first+1;
    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