Submission #753648

#	Time	Username	Problem	Language	Result	Execution time	Memory
753648		bgnbvnbv	Self Study (JOI22_ho_t2)	C++14	0 / 100	504 ms	5068 KiB

Main

#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=3e5+10;
const ll inf=1e18;
const ll mod=1e9+7;
ll a[maxN],b[maxN];
ll n,m;
bool check(ll mid)
{
    ll sum=0;
    for(int i=1;i<=n;i++)
    {
        ll cc=max(a[i],b[i]);
        cc=(mid+cc-1)/cc;
        if(cc<=m) sum+=m-cc;
        else
        {
            cc=max(a[i],b[i]);
            ll can=mid-cc*m;
            can=(can+b[i]-1)/b[i];
            sum-=can;
        }
        // cc*...>=mid
    }
    return sum>=0;
}
void solve()
{
    cin >> n >> m;
    for(int i=1;i<=n;i++) cin >> a[i];
    for(int i=1;i<=n;i++) cin >> b[i];
    ll low=0,high=5e18;
    while(low<=high)
    {
        ll mid=low+high>>1;
        if(check(mid)) low=mid+1;
        else high=mid-1;
    }
    cout << high;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:42:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   42 |         ll mid=low+high>>1;
      |                ~~~^~~~~

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