Submission #1086631

#	Time	Username	Problem	Language	Result	Execution time	Memory
1086631		dwuy	Self Study (JOI22_ho_t2)	C++14	10 / 100	64 ms	11344 KiB

Main

/**         - dwuy -

　　　　　 ／＞　   フ
　　　　　 | 　_　 _|
　 　　　 ／`ミ _x ノ
　　 　 /　　　 　 |
　　　 /　  ヽ　　 ?
　／￣|　　 |　|　|
　| (￣ヽ＿_ヽ_)_)
　＼二つ

**/
#include <bits/stdc++.h>

#define fastIO ios_base::sync_with_stdio(false); cin.tie(NULL)
#define file(a) freopen(a".inp","r",stdin); freopen(a".out", "w",stdout)
#define fi first
#define se second
#define endl "\n"
#define len(s) (int)((s).size())
#define MASK(k)(1LL<<(k))
#define TASK "test"
#define int long long

using namespace std;

typedef tuple<int, int, int> tpiii;
typedef pair<double, double> pdd;
typedef pair<int, int> pii;
typedef long long ll;

const long long OO = 1e18;
const int MOD = 1e9 + 7;
const int INF = 1e9;
const int MX = 300005;

int n, m;
int a[MX];
int b[MX];

int32_t main(){
    fastIO;
    //file(TASK);

    cin >> n >> m;
    for(int i=1; i<=n; i++) cin >> a[i];
    for(int i=1; i<=n; i++) cin >> b[i];
    for(int i=1; i<=n; i++) a[i] = max(a[i], b[i]);

    if(m == 1){
        sort(a + 1, a + 1 + n);
        cout << a[1];
        exit(0);
    }

    int res = 0;
    for(int lo=1, hi=OO; lo<=hi;){
        int mid = (lo + hi)>>1;
        int fund = 0;
        for(int i=1; i<=n; i++){
            int d = mid/a[i] + !!(mid%a[i]);
            if(d <= m) fund += m - d;
            else{
                int f = mid - a[i]*m;
                fund -= f/b[i] + !!(f%b[i]);
            }
        }
        if(fund >= 0) res = mid, lo = mid + 1;
        else hi = mid - 1;
    }
    cout << res;

    return 0;
}

/*

5 1
1 2 1 2 1 
1 1 1 1 1

*/

• Subtask 1: 10 / 10
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 9