Submission #920358

#	Time	Username	Problem	Language	Result	Execution time	Memory
920358		KiaRez	Self Study (JOI22_ho_t2)	C++17	62 / 100	348 ms	14672 KiB

Main

/*
    IN THE NAME OF GOD
*/
#include <bits/stdc++.h>

// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")

using namespace std;

typedef __int128 ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef long double ld;

#define F                                      first
#define S                                      second
#define Mp                                     make_pair
#define pb                                     push_back
#define pf                                     push_front
#define size(x)                                ((ll)x.size())
#define all(x)                                 (x).begin(),(x).end()
#define kill(x)		                           cout << x << '\n', exit(0);
#define fuck(x)                                cout << "(" << #x << " , " << x << ")" << endl
#define endl                                   '\n'

const int N = 3e5+23, lg = 18;
ll Mod = 1e9+7; //998244353;

inline ll MOD(ll a, ll mod=Mod) {a%=mod; (a<0)&&(a+=mod); return a;}
inline ll poww(ll a, ll b, ll mod=Mod) {
    ll ans = 1;
    a=MOD(a, mod);
    while (b) {
        if (b & 1) ans = MOD(ans*a, mod);
        b >>= 1;
        a = MOD(a*a, mod);
    }
    return ans;
}

long long nn, mm, A[N], B[N];
ll n, m, a[N], b[N];
int main () {
	ios_base::sync_with_stdio(false), cin.tie(0);

	cin>>nn>>mm;
	for(int i=1; i<=nn; i++) cin>>A[i];
	for(int i=1; i<=nn; i++) cin>>B[i];
	n=nn, m=mm;
	for(int i=1; i<=n; i++) a[i]=A[i], b[i]=B[i];

	ll l=0, r=1e18+10;
	while(r-l > 1) {
		ll mid = (l+r)/2;
		ll num = 0, yey = 1;
		for(int i=1; i<=n; i++) {
			if(a[i] >= b[i]) {
				ll x = min(m, (mid+a[i]-1)/a[i]);
				num -= max((ll)0, m-x);
				num += max((ll)0, (mid-x*a[i]+b[i]-1)/b[i]);
			} else {
				ll x = (mid+b[i]-1)/b[i];
				num += max((ll)0, x);
				num -= m;
			}
		}
		if(num <= (ll)0) l=mid;
		else r=mid;
	}

	cout<<(long long)l<<endl;

	return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:57:15: warning: unused variable 'yey' [-Wunused-variable]
   57 |   ll num = 0, yey = 1;
      |               ^~~

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