Submission #1233209

#	Time	Username	Problem	Language	Result	Execution time	Memory
1233209		ByeWorld	Arcade (NOI20_arcade)	C++20	65 / 100	1095 ms	7012 KiB

Arcade

#include <bits/stdc++.h>
#pragma GCC optimize("O3", "Ofast")
#define int long long
#define ll long long
#define se second
#define fi first
#define pb push_back
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
using namespace std;
typedef pair<int,int> pii;
typedef pair<pii,pii> ipii;
const int MAXN = 5e5+10;
const int MAXA = 5e5+10;
const int SQRT = 450;
const ll INF = 1e18;
const int MOD = 1e9+7;
const int LOG = 60;
int sum(int a, int b){ return (a+MOD+b)%MOD; }
void chsum(int &a, int b){ a = sum(a,b); }
int mul(int a, int b){ return (a*b)%MOD; }
void chmul(int &a, int b){ a = mul(a,b); }
void chmn(auto &a, auto b){ a = min(a, b); }
void chmx(auto &a, auto b){ a = max(a, b); }
vector<int> dx = {0, 0, -1, 1};
vector<int> dy = {1, -1, 0, 0};

int x, n, a[MAXN], t[MAXN];
vector<pii> vec;

bool cmp(pii a, pii b){
	if(a.fi==b.fi) return a.se < b.se;
	return a.fi > b.fi;
}
signed main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>x>>n;
	for(int i=1; i<=n; i++) cin>>t[i];
	for(int i=1; i<=n; i++){
		cin>> a[i];
		vec.pb({a[i]-t[i], a[i]+t[i]}); // dari paling bawah
	}
	sort(vec.begin(), vec.end(), cmp);

	int tot = 0;
	while(!vec.empty()){
		int nw = -1; vector<pii> vec2; tot++;
		for(auto [p, nx] : vec){
			if(nw <= nx) nw = nx;
			else vec2.pb({p,nx});
		}
		swap(vec, vec2);
	}
	cout << tot << " \n";
	// set<int> s;
	// for(auto [tim, idx] : vec){
	// 	cout << tim << ' ' << idx << " ti\n";
	// 	auto it = s.upper_bound(idx);
	// 	if(it!=s.begin()){
	// 		it--; s.erase(it);
	// 	}
	// 	s.insert(idx);
	// }

	// cout << s.size() << '\n';
}

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 14 / 14
• Subtask 6: 0 / 20
• Subtask 7: 0 / 15