#include <bits/stdc++.h>
// #pragma GCC optimize("O3, unroll-loops")
// #pragma GCC target("avx2")
// #define int long long
using namespace std;
#define _upgrade \
ios_base::sync_with_stdio(0); \
cin.tie(0); \
cout.tie(0);
#define LINE "---------------------\n"
#define ALL(A) A.begin(), A.end()
#define LLA(A) A.rbegin(), A.rend()
#define Q queue
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define sz(x) (int)x.size()
using ll = long long;
using db = double;
using ld = long double;
using uint = unsigned;
// PQ going up <int, VI, greater<int> >
using VI = vector<int>;
using VVI = vector<VI>;
using VVVI = vector<VVI>;
using VB = vector<bool>;
using VVB = vector<VB>;
using VVVB = vector<VVB>;
using VLL = vector<ll>;
using VVLL = vector<VLL>;
using PII = pair<int, int>;
using VPI = vector<PII>;
using VVPI = vector<VPI>;
using PLL = pair<ll, ll>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
void eraseDups(VI& a) {
a.erase(unique(a.begin(), a.end()), a.end());
}
int strToInt(string&a) {
stringstream x(a);
int b;
x >> b;
return b;
}
int bitCnt(int a) {
bitset <64> b(a);
return b.count();
}
int bitCnt(string a) {
bitset <64> b(a);
return b.count();
}
int gcd(int a, int b) {
if (b == 0) return a;
return gcd(b, a % b);
}
/*
| _
| __ _ | |
| | \| | ___ ___ | |_
| | |\ | |/ _ \/ __/| __|
| | | \ | __/\__ \| |_
| |_| \_|\___ /___/ \__|
| _ _ _
| (_) | | | |
| _ __ _ __ ___ __ _ _ __ __ _ _ __ ___ _ __ ___ _ ___ ___| |_| |_
| | '_ \| '__/ _ \ / _` | '__/ _` | '_ ` _ \| '_ ` _ \| / __/ __| __| __|
| | |_) | | | (_) | (_| | | | (_| | | | | | | | | | | | \__ \__ \ |_| |_
| | .__/|_| \___/ \__, |_| \__,_|_| |_| |_|_| |_| |_|_|___/___/\__|\__|
| | | __/ |
| |_| |___/ _
| _ (_)
| _ __ ___ __ _ ____ __ _ __ _| | __ _ _
| | '_ ` _ \ / _` |_ / _` |/ _` | |/ _` | |
| | | | | | | (_| / / (_| | (_| | | (_| | |
| |_| |_| |_|\__,_|____\__,_|\__,_|_|\__,_|_|
*/
const db PI = acos(-1.0); //M_PI;
const ll INFF = 4e18;
const int INF = 1.07e9;
const int MOD = 1e9 + 7;
const int MOD1 = 998244353; //7*19*2^23 +1;
const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, 1, 0, -1};
const int N = 5e3 + 5;
const int M = 2e5 + 5;
int nums[N];
int dp[N][N];
int n, m, k, q;
string s;
void go () {
cin >> n >> m;
for (int i = 1; i <= n; i++) cin >> nums[i];
memset(dp, -1, sizeof(dp));
for (int i = 0; i <= n; i++) dp[0][i] = 0;
for (int i = 1; i <= n; i++)
for (int j = 0; j <= n; j++) {
if (dp[i-1][j]+m >= nums[i]) dp[i][j] = nums[i];
if (j > 0 && dp[i-1][j-1] != -1) dp[i][j] = max(dp[i][j], dp[i-1][j-1]+m);
}
int ans = 0;
while(dp[n][ans] == -1) ans++;
cout << ans << '\n';
}
signed main () {
#ifndef ONLINE_JUDGE
// freopen("0.in", "r", stdin);
// freopen("0.out", "w", stdout);
#endif
_upgrade
int T = 1;
while(T--) go();
return (0-0); //<3
}
/* stuff you should look for
* int overflow, array bounds
* special cases (n=1?)
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
46 ms |
98252 KB |
Output is correct |
2 |
Correct |
37 ms |
98260 KB |
Output is correct |
3 |
Correct |
37 ms |
98240 KB |
Output is correct |
4 |
Incorrect |
36 ms |
98300 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
46 ms |
98252 KB |
Output is correct |
2 |
Correct |
37 ms |
98260 KB |
Output is correct |
3 |
Correct |
37 ms |
98240 KB |
Output is correct |
4 |
Incorrect |
36 ms |
98300 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
46 ms |
98252 KB |
Output is correct |
2 |
Correct |
37 ms |
98260 KB |
Output is correct |
3 |
Correct |
37 ms |
98240 KB |
Output is correct |
4 |
Incorrect |
36 ms |
98300 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
46 ms |
98252 KB |
Output is correct |
2 |
Correct |
37 ms |
98260 KB |
Output is correct |
3 |
Correct |
37 ms |
98240 KB |
Output is correct |
4 |
Incorrect |
36 ms |
98300 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |