Submission #534085

#	Time	Username	Problem	Language	Result	Execution time	Memory
534085		browntoad	Self Study (JOI22_ho_t2)	C++14	100 / 100	325 ms	5968 KiB

Main

#include <bits/stdc++.h>
#pragma GCC optimize ("Ofast", "unroll-loops")
using namespace std;
#define ll long long
#define int ll
#define FOR(i,a,b) for (int i = (a); i<(b); i++)
#define REP(i,n) FOR(i,0,n)
#define REP1(i,n) FOR(i,1,n+1)
#define RREP(i,n) for (int i=(n)-1; i>=0; i--)
#define f first
#define s second
#define pb push_back
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)(x.size())
#define SQ(x) (x)*(x)
#define pii pair<int, int>
#define pdd pair<double ,double>
#define pcc pair<char, char> 
#define endl '\n'
//#define TOAD
#ifdef TOAD
#define bug(x) cerr<<__LINE__<<": "<<#x<<" is "<<x<<endl
#define IOS()
#else
#define bug(...)
#define IOS() ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#endif

const ll inf = 1ll<<60;
const int iinf=2147483647;
const ll mod = 1e9+7;
const ll maxn=4e5+5;
const double PI=acos(-1);
std::ostream&
operator<<( std::ostream& dest, __int128_t value )
{
    std::ostream::sentry s( dest );
    if ( s ) {
        __uint128_t tmp = value < 0 ? -value : value;
        char buffer[ 128 ];
        char* d = std::end( buffer );
        do
        {
            -- d;
            *d = "0123456789"[ tmp % 10 ];
            tmp /= 10;
        } while ( tmp != 0 );
        if ( value < 0 ) {
            -- d;
            *d = '-';
        }
        int len = std::end( buffer ) - d;
        if ( dest.rdbuf()->sputn( d, len ) != len ) {
            dest.setstate( std::ios_base::badbit );
        }
    }
    return dest;
}
ll pw(ll x, ll p, ll m=mod){
    ll ret=1;
    while (p>0){
        if (p&1){
            ret*=x;
            ret%=m;
        }
        x*=x;
        x%=m;
        p>>=1;
    }
    return ret;
}

ll inv(ll a, ll m=mod){
    return pw(a,m-2);
}

//=======================================================================================


signed main (){
    IOS();
    int n,m; cin>>n>>m;
    vector<int> a(n), b(n);
    REP(i,n){
        cin>>a[i];
    }
    REP(i,n){
        cin>>b[i];
    }
    __int128 l=0, r=3;
    REP(i,23){
        r*=10;
    }
    //cout<<r<<endl;
    while(l<=r){
        //cout<<l<<' '<<r<<endl;
        if (l==r){
            cout<<l<<endl;
            break;
        }
        __int128 mid=(l+r+1)/2;
        __int128 debt=0;
        REP(i,n){
            if (max(a[i], b[i])*m>=mid){
                __int128 tot=mid/max(a[i], b[i])+(mid%max(a[i], b[i])>0);
                debt-=m-tot;
            }
            else {
                __int128 mx=mid;
                mx-=max(a[i], b[i])*m;
                debt+=mx/b[i]+(mx%b[i]>0);
            }
        }
        if (debt>0){
            r=mid-1;
        }
        else l=mid;
    }
}

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