oj.uz

답안 #46598

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
46598 2018-04-22T08:13:26 Z tieunhi Jakarta Skyscrapers (APIO15_skyscraper) C++14
0 / 100
 22 ms 25624 KB 
#include <bits/stdc++.h>
#define pii pair<int, int>
#define mp make_pair
#define F first
#define S second
#define PB push_back
#define N 30005
#define MAGIC 205
#define maxc 1000000007

using namespace std;

int n, m, b[N], p[N];
vector<int> vec[N];
int d[N][MAGIC];

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen("INP.TXT", "r", stdin);
    cin >> n >> m;
    for (int i = 0; i < m; i++)
    {
        cin >> b[i] >> p[i];
        vec[b[i]].PB(p[i]);
    }
    priority_queue<pair<int, pii> >q;
    q.push(mp(0, mp(b[0], 0)));

    memset(d, 60, sizeof d);
    d[b[0]][0] = 0;
    while (!q.empty())
    {
        auto z = q.top(); q.pop();
        int l = -z.F;
        int x = z.S.F;
        int w = z.S.S;

        if (d[x][w] < l) continue;

        if (x == b[1])
        {
            cout <<l;
            return 0;
        }
        if (w)
        {
            if (d[x][0] > l) {
                d[x][0] = l; q.push(mp(-l, mp(x, 0)));
            }
            if (x + w < n && d[x + w][w] > l + 1) {
                d[x + w][w] = l+1; q.push(mp(-l-1, mp(x+w, w)));
            }
            if (x - w >= 0 && d[x - w][w] > l + 1) {
                d[x - w][w] = l+1; q.push(mp(-l-1, mp(x-w, w)));
            }
        }
        else
        {
            for (auto ww : vec[x])
            {
                if (ww >= MAGIC)
                {
                    for (int y = x % ww; y < n; y += ww)
                        if (d[y][0] > d[x][w] + abs(x - y)/ww)
                        {
                            d[y][0] = d[x][w] + abs(x - y)/ww;
                            q.push(mp(-d[y][0], mp(y, 0)));
                        }
                }
                else
                {
                    if (d[x][ww] > d[x][0])
                    {
                        d[x][ww] = d[x][0];
                        q.push(mp(-d[x][ww], mp(x, ww)));
                    }
                }
            }
        }
    }
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 25080 KB Output is correct
2 Correct 20 ms 25192 KB Output is correct
3 Correct 22 ms 25432 KB Output is correct
4 Incorrect 19 ms 25432 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 25432 KB Output is correct
2 Correct 20 ms 25432 KB Output is correct
3 Correct 21 ms 25472 KB Output is correct
4 Incorrect 19 ms 25472 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 25472 KB Output is correct
2 Correct 20 ms 25472 KB Output is correct
3 Correct 20 ms 25476 KB Output is correct
4 Incorrect 20 ms 25480 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 25564 KB Output is correct
2 Correct 20 ms 25564 KB Output is correct
3 Correct 20 ms 25564 KB Output is correct
4 Incorrect 20 ms 25624 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 25624 KB Output is correct
2 Correct 20 ms 25624 KB Output is correct
3 Correct 20 ms 25624 KB Output is correct
4 Incorrect 20 ms 25624 KB Output isn't correct
5 Halted 0 ms 0 KB -