Submission #288621

#	Time	Username	Problem	Language	Result	Execution time	Memory
288621		emil_physmath	Rail (IOI14_rail)	C++17	30 / 100	120 ms	47936 KiB

rail

#include "rail.h"
#include <map>
using namespace std;

map<int, int> cache[1000'000];
int GetDistance(int u, int v)
{
    auto it = cache[u].find(v);
    if (it != cache[u].end()) return it->second;
    return cache[u][v] = getDistance(u, v);
}
void findLocation(int n, int first, int location[], int stype[])
{
    int mn = 1;
    for (int i = 1; i < n; ++i)
    {
        if (GetDistance(0, i) < GetDistance(0, mn))
            mn = i;
    }
    location[0] = first;
    stype[0] = 1;
    location[mn] = first + GetDistance(0, mn);
    stype[mn] = 2;
    for (int i = 1; i < n; ++i)
    {
        if (i == mn) continue;
        if (GetDistance(0, mn) + GetDistance(mn, i) == GetDistance(0, i))
        {
            stype[i] = 1;
            location[i] = location[mn] - GetDistance(mn, i);
        }
        else
        {
            stype[i] = 2;
            location[i] = first + GetDistance(0, i);
        }
    }
}

• Subtask 1: 8 / 8
• Subtask 2: 22 / 22
• Subtask 3: 0 / 26
• Subtask 4: 0 / 44