Submission #528141

#	Time	Username	Problem	Language	Result	Execution time	Memory
528141		doowey	Self Study (JOI22_ho_t2)	C++14	0 / 100	305 ms	4992 KiB

Main

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const int N = (int)3e5 + 10;
ll A[N];
ll B[N];

ll ceil(ll x, ll y){
    return (x + y - 1) / y;
}

int main(){
    fastIO;
    //freopen("in.txt","r",stdin);
    ll m;
    ll n;
    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]);
    }
    ll li = 0;
    ll ri = (ll)1e18;
    ll mid;
    ll have = 0;
    ll need = 0;
    ll take;
    ll rem;
    while(li + 1 < ri){
        mid = (li + ri) / 2ll;
        have = 0;
        for(int i = 1; i <= n; i ++ ){
            if(mid <= A[i] * 1ll * m){
                have += ceil(mid, A[i]);
            }
            else{
                have += m + ceil(mid - A[i] * 1ll * m, B[i]);
            }
        }
        if(have <= n * 1ll * m){
            li = mid;
        }
        else{
            ri = mid;
        }
    }
    cout << li << "\n";
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:40:8: warning: unused variable 'need' [-Wunused-variable]
   40 |     ll need = 0;
      |        ^~~~
Main.cpp:41:8: warning: unused variable 'take' [-Wunused-variable]
   41 |     ll take;
      |        ^~~~
Main.cpp:42:8: warning: unused variable 'rem' [-Wunused-variable]
   42 |     ll rem;
      |        ^~~

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