Submission #960002

#	Time	Username	Problem	Language	Result	Execution time	Memory
960002		Cookie	Snail (NOI18_snail)	C++14	100 / 100	1 ms	756 KiB

snail

#include<bits/stdc++.h>
#include<fstream>
using namespace std;
#define sz(a) (int)a.size()
#define ALL(v) v.begin(), v.end()
#define ALLR(v) v.rbegin(), v.rend()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
#define mpp make_pair
const ld PI = 3.14159265359, prec = 1e-9;;
//using u128 = __uint128_t;
//const int x[4] = {1, 0, -1, 0};
//const int y[4] = {0, -1, 0, 1};
const ll mod = 998244353, pr = 31;
const int mxn = 1e4 + 5, mxq = 1e5 + 5, sq = 300, mxv = 5e4 + 1;
//const int base = (1 <<18);
const ll inf = 1e16 + 5, neg = -69420, inf2 = 1e14;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
// have fun!
// <3;
ll h, n;
ll a[mxn + 1];
void solve(){
    cin >> h >> n;
    ll mx = 0, pref = 0, att = 0;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        pref += a[i]; mx = max(mx, pref);
        att += a[i]; if(att < 0)att = 0;
        if(att >= h){
            cout << 0 << " " << i - 1;
            return;
        }
    }
	h -= att;
	if(mx >= h){
        ll tot = 0;
        for(int i = 1; i <= n; i++){
            tot += a[i];
            if(tot >= h){
                cout << 1 << " " << i - 1;
                return;
            }
        }
	}
    if(pref <= 0){
        cout << -1 << " " << -1;
        return;
    }else{
        ll day = (h - mx + pref - 1) / pref; h -= day * pref;
        cout << day + 1 << " ";
        ll tot = 0;
        for(int i = 1; i <= n; i++){
            tot += a[i];
            if(tot >= h){
                cout << i - 1;
                return;
            }
        }
    }
}


signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen("netw.inp", "r", stdin);
    //freopen("netw.out", "w", stdout);
    int tt; tt = 1;
    while(tt--){
        solve();

    }
    return(0);
}
/*
1
5 7 2
1 1 1
3 1 2
2 2 3
4 2 4
2 4 2
1 5 5
3 5 2
5 3
2 7
3 3 1
1 1 1
1 2 2
1 3 3
3 1
*/

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