Submission #1249733

#	Time	Username	Problem	Language	Result	Execution time	Memory
1249733		lekyanh	Snail (NOI18_snail)	C++20	17 / 100	1 ms	328 KiB

snail

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll a[10004], n;
bool experiment(){
	ll tong=0, tong2=0;
	for(ll i=0; i<n; i++){
		tong+=a[i];
		if(tong<0) tong=0;
	}
	tong2=tong;
	for(ll i=0; i<n; i++){
		tong2+=a[i];
		if(tong2<0) tong2=0;
	}
	if(tong==tong2) return true;
	else return false;
}
ll H, i, j, t, num, x, h_max=0, tong;
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	cin>>H>>n;
	for(i=0; i<n; i++){ cin>>a[i]; x+=a[i]; h_max=max(h_max, x);}
	if(experiment()==true){
		t=0;
		while(t<2){
			for(i=0; i<n; i++){
				tong+=a[i];
				if(tong<0) tong=0;
				else if(tong>=H){ cout<<t<<' '<<i; return 0; }
			}
			t++;
		} cout<<"-1 -1"; 
		}
	else{
		//cout<<"yess"<<endl;
		tong=0;
		for(i=0; i<n; i++){
			tong+=a[i];
			if(tong>=H){ cout<<0<<' '<<i; return 0; }
			if(tong<0) tong=0;
		}
		num=(H-tong-h_max)/x;
		num-=2;
		num=max(num , 0LL);
		tong+=num*x;
		while(true){
			num++;
			for(i=0; i<n; i++){
				tong+=a[i];
				if(tong>H){
					cout<<num<<' '<<i;
					return 0;
				}
			}
		}
	}
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 9
• Subtask 3: 0 / 25
• Subtask 4: 17 / 17
• Subtask 5: 0 / 38