Submission #735777

#	Time	Username	Problem	Language	Result	Execution time	Memory
735777		sheldon	Segway (COI19_segway)	C++17	40 / 100	1072 ms	1160 KiB

segway

#include <bits/stdc++.h>
    
using namespace std;
    
// #pragma GCC optimize ("unroll-loops")
    
int position[20005], speed[20005][3], charge[20005], ans[20005], boost[20005];
bool acc[20005], finished[20005];
    
void solve() {
    int n;
    cin >> n;
    for (int i = 0; i < n; ++i) {
        cin >> speed[i][0] >> speed[i][1] >> speed[i][2];
        ans[i] = 1e9;
    }
    int m;
    cin >> m;
    for (int i = 0; i < m; ++i) {
        int x;
        cin >> x;
        acc[x] = 1;
    }
    for (int sec = 1; sec <= 15000; ++sec) {
        for (int i = 0; i < n; ++i) {
            if (finished[i]) continue;
            if (boost[i]) {
                --boost[i];
                ++position[i];
                continue;
            }
            int use = (position[i]) / 100;
            ++charge[i];
            if (charge[i] == speed[i][use]) {
                ++position[i];
                charge[i] = 0;
            }
        }
        // cout << sec << ' ' << position[0] << '\n';
        vector<int> people[301];
        for (int i = 0; i < n; ++i) {
            if (position[i] == 300) {
                finished[i] = 1;
                ans[i] = min(ans[i], sec);
            }
            people[position[i]].push_back(i);
        }
        int found = 0;
        for (int i = 300; i >= 1; --i) {
            if (acc[i]) {
                int cnt = 0;
                for (int x : people[i]) {
                    if (charge[x]) ++cnt;
                }
                for (int x : people[i]) {
                    if (!charge[x] && !boost[x]) {
                        boost[x] = (found + cnt) % 20;
                    }
                }
            }
            found += people[i].size();
        }
    }
    for (int i = 0; i < n; ++i) {
        cout << ans[i] << '\n';
    }
}
    
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    solve();
}

• Subtask 1: 0 / 15
• Subtask 2: 40 / 40
• Subtask 3: 0 / 45