Submission #1090023

#	Time	Username	Problem	Language	Result	Execution time	Memory
1090023		dpsaveslives	Snail (NOI18_snail)	C++17	0 / 100	1 ms	860 KiB

snail

#include <bits/stdc++.h>
#define ll long long
using namespace std;

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    ll H; int N; cin >> H >> N;
    vector<ll> phases(N);
    vector<ll> pref(N);
    for(int i = 0;i<N;++i){
        cin >> phases[i];
        if(i == 0) pref[i] = phases[i];
        else pref[i] = phases[i]+pref[i-1];
    }
    ll ans = -1, p = -1;
    ll d = H/pref[N-1];
    if(H % pref[N-1] != 0) ++d;
    if(d >= 0){
        ans = d;
        p = 0;
    }
    for(int i = 0;i<N;++i){
        ll cur = H-pref[i];
        d = cur/pref[N-1];
        if(d < 0) continue;
        if(cur % pref[N-1] != 0){
            ++d;
        }
        if(ans == -1 || d < ans){
            ans = d;
            p = i;
        }
    }
    cout << ans << " " << p << "\n";
    return 0;
}

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