Submission #328803

#	Time	Username	Problem	Language	Result	Execution time	Memory
328803		ryangohca	Snail (NOI18_snail)	C++17	0 / 100	3 ms	748 KiB

snail

#include <bits/stdc++.h>
#define int long long
using namespace std;
vector<int> changes;
main() {
    int h, n; cin >> h >> n;
    for (int i = 0; i < n*2; i++){
        if (i >= n){
            changes.push_back(changes[i-n]);
        } else {
            int g; cin >> g;
            changes.push_back(g);
        }
    }
    int s = 0;
    for (int i = 0; i < n*2; i++){
        s += changes[i];
        s = max(s, 0ll);
        if (s >= h){
            cout << i/n << ' ' << i%n << '\n';
            return 0;
        }
    }
    s = accumulate(changes.begin(), changes.end(), 0ll);
    if (s <= 0) {
        cout << "-1 -1\n";
        return 0;
    } else {
        int d = h/s * 2;
        int climbed = d*s;
        if (climbed >= h){
            cout << d << ' ' << n - 1 << "\n";
            return 0;
        }
        d++;
        for (int i = 0; i < n*2; i++){
            if (i == n) d++;
            climbed += changes[i];
            if (climbed >= h){
                cout << d << ' ' << i % n << '\n';
                return 0;
            }
        }
    }
}

Compilation message (stderr)

snail.cpp:5:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    5 | main() {
      |      ^

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