Submission #536014

#	Time	Username	Problem	Language	Result	Execution time	Memory
536014		zaneyu	Self Study (JOI22_ho_t2)	C++14	100 / 100	542 ms	11452 KiB

Main

/*input
4 1
7 6 4 5
9 8 3 3
*/
#include<bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<long long, null_type, less_equal<long long>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
#pragma GCC optimize("unroll-loops,no-stack-protector")
//order_of_key #of elements less than x
// find_by_order kth element
using ll = long long;
using ld = long double;
using pii = pair<int,int>;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
const ll INF64=4e18;
const int INF=0x3f3f3f3f;
const ll MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-6;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
ll sub(ll a,ll b){
    ll x=a-b;
    while(x<0) x+=MOD;
    while(x>MOD) x-=MOD;
    return x;
}
ll mult(ll a,ll b){
    return (a*b)%MOD;
}
ll mypow(ll a,ll b){
    if(b<=0) return 1;
    ll res=1LL;
    while(b){
        if(b&1) res=(res*a)%MOD;
        a=(a*a)%MOD;
        b>>=1;
    }
    return res;
}
const ll maxn=5e5+5;
const ll maxlg=__lg(maxn)+2; 
ll a[maxn],b[maxn];
ll n,m;
bool wk(ll mid){
    __int128 tot=0;
    REP(i,n){
        if(a[i]==b[i]){
            tot+=m;
            tot-=(mid+b[i]-1)/b[i];
            continue;
        }
        ll free=(m-((mid+a[i]-1)/a[i]));
        if(free<0) tot-=(mid-1LL*m*a[i]+b[i]-1)/b[i];
        else tot+=free;
    }
    return tot>=0;
}
int main(){
    cin>>n>>m;
    REP(i,n) cin>>a[i];
    REP(i,n) cin>>b[i],MXTO(a[i],b[i]);
    ll l=0,r=INF64;
    while(l<r){
        ll mid=(l+r+1)/2;
        if(wk(mid)) l=mid;
        else r=mid-1;
    }
    cout<<l;
}

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