Submission #814525

#	Time	Username	Problem	Language	Result	Execution time	Memory
814525		winthemcut3	Rabbit Carrot (LMIO19_triusis)	C++14	0 / 100	1 ms	1108 KiB

triusis

#include <bits/stdc++.h>
#define FastIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define ll long long
#define PB push_back
#define ALL(v) (v).begin(), (v).end()
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i++)
#define FORD(i, b, a) for (int i = (b), _a = (a); i >= _a; i--)
#define fi   first
#define se   second
#define BIT(x, i) (((x) >> (i)) & 1)
using namespace std;

/** END OF TEMPLATE **/

const int mxN = 1e5 + 5;
struct fenwick {
    vector<int> bit;
};
int n, m;
int a[mxN], b[mxN];
int dp[mxN][2];
int main()
{
    FastIO;
    //freopen(".inp", "r", stdin);
    //freopen(".out", "w", stdout);
    cin >> n >> m;
    FOR(i, 1, n) cin >> a[i];
    memset(dp, 0x3f, sizeof dp);
    dp[0][0] = dp[0][1] = 0;
    FOR(i, 1, n) {
        FORD(j, i-1, 0) {
            if(a[i] <= a[j] + m || a[j] >= a[i])
                dp[i][0] = min(dp[i][0], dp[j][0] + i-j-1);
            if(a[i] <= b[j] + m || b[j] >= a[i])
                dp[i][0] = min(dp[i][0], dp[j][1] + i-j-1);
        }
        if(dp[i][1] > dp[i-1][0] + 1) {
            dp[i][1] = dp[i-1][0] + 1;
            b[i] = a[i-1] + m;
        }
        if(dp[i][1] > dp[i-1][1] + 1) {
            dp[i][1] = dp[i-1][1] + 1;
            b[i] = b[i-1] + m;
        }
        //cerr << dp[i-1][0] << ' ' << dp[i-1][1] << '\n';
    }
    cout << min(dp[n][0], dp[n][1]);
    return 0;
}

/*

*/

• Subtask 1: 0 / 14
• Subtask 2: 0 / 21
• Subtask 3: 0 / 28
• Subtask 4: 0 / 37