Submission #293066

#	Time	Username	Problem	Language	Result	Execution time	Memory
293066		Ruba_K	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	0 / 100	1 ms	384 KiB

skyscraper

#include <bits/stdc++.h>

using namespace std;

const int di[] = {1, -1, 0, 0 , 1 , 1 , -1 , -1};
const int dj[] = {0, 0, 1, -1 , 1 , -1 , 1 , -1};

typedef long long ll;
const int N = 3e3 + 3 ;
#define int long long
int n , m , arr[N] ;

int vis[N][N];
int calc(int idx , int jmp){

    if(idx >= n || idx < 0)
        return 1e9 ;
    if(arr[idx])jmp = arr[idx];
    if(vis[idx][jmp])
        return 1e9 ;
    vis[idx][jmp]++;
    if(idx == 1)return 0 ;

    int first = 1e9 , second = 1e9;

    first = 1 + calc(idx + jmp , jmp);
    second = 1 + calc(idx - jmp , jmp);
    if(min(first , second) >= 5000)return -1 ;
    return min(first , second);

}
int32_t main()
{
    cin >> n >> m ;

    for(int i = 0 ; i < m ; i ++){
        int b , p ;
        cin >> b >> p ;

        arr[b] = p ;
    }

    cout << (arr[0] ? calc(0 , arr[0]) : -1 );
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 12
• Subtask 3: 0 / 14
• Subtask 4: 0 / 21
• Subtask 5: 0 / 43