#pragma GCC optimize("O3")
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
using namespace std;
using base = complex<double>;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define M 1000000007
#define M2 998244353
#define ll long long
#define pll pair<long, long>
#define REP(i, a, b) for (ll i = a; i < b; i++)
#define REPI(i, a, b) for (ll i = b - 1; i >= a; i--)
#define ff first
#define ss second
#define pb push_back
#define db pop_back
#define mp make_pair
#define mt make_tuple
#define g(a, b) get<a>(b)
#define INF (ll)1e18 + 100
#define vl vector<ll>
#define vi vector<int>
#define vll vector<pair<ll, ll>>
#define vii vector<pair<int, int>>
#define all(v) v.begin(), v.end()
#define bset(a, p) ((a) | (1ll << (p)))
#define bchk(a, p) ((a) & (1ll << (p)))
#define bxor(a, p) ((a) ^ (1ll << (p)));
#define brem(a, p) (bchk(a, p) ? (bxor(a, p)) : (a))
#define INT_SIZE 32
/*SOME BITMASK KNOWLEDGE
1)x & (x - 1):sets the last one bit of x to zero
power of two exactly when x & (x − 1) = 0.
2)x & -x:sets all the one bits to zero, except last one bit
3)x | (x - 1):inverts all the bits after the last one bit*/
#define o_set tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update>
#define o_setpll tree<pair<ll,ll>, null_type, less<pair<ll,ll>>, rb_tree_tag, tree_order_statistics_node_update>
//member functions :
//1. order_of_key(k) : number of elements strictly lesser than k
//2. find_by_order(k) : k-th element in the set
ll powM(ll x, ll y, ll m)
{
if (x == 0) {
return 1;
}
ll ans = 1, r = 1;
if(x >= m){
x = x%m;
}
while (r > 0 && r <= y) {
if (r & y) {
ans *= x;
if(ans >= m){
ans = ans%m;
}
}
r <<= 1;
x *= x;
if(x >= m){
x = x%m;
}
}
return ans;
}
ll modI(ll a, ll m)
{
ll m0 = m, y = 0, x = 1;
if (m == 1)
return 0;
while (a > 1) {
ll q = a / m;
ll t = m;
m = a % m;
a = t;
t = y;
y = x - q * y;
x = t;
}
if (x < 0)
x += m0;
return x;
}
ll extended(ll a, ll b, ll &x, ll &y)
{
if (a == 0) {
x = 0;
y = 1;
return b;
}
ll x1, y1;
ll d = extended(b % a, a, x1, y1);
x = y1 - (b / a) * x1;
y = x1;
return d;
}
ll lcm(ll x, ll y) {
ll gc = __gcd(x, y);
x /= gc;
if ((ll)(8e18) / y <= x) {
return 8e18;
}
return (x * y);
}
ll power(ll x, ll y){
if(y < 0){
return 0;
}
ll ans = 1;
REP(i,1,y+1){
ans *= x;
}
return ans;
}
void setIO(string name = "") { // name is nonempty for USACO file I/O
// alternatively, cin.tie(0)->sync_with_stdio(0);
if (name.size()) {
freopen((name+".in").c_str(), "r", stdin); // see Input & Output
freopen((name+".out").c_str(), "w", stdout);
}
}
void solve(){
ll n, m;
cin>>n>>m;
vl v(n);
REP(i,0,n){
cin>>v[i];
}
vl dp;
// vl ndp(n+1,-1);
dp.pb(0);
REP(i,0,n){
// REP(j,0,n+1){
// cout<<dp[j]<<" ";
// }
// cout<<"\n";
// ndp.assign(n+1,-1);
// for(ll j=0; j<n; j++){
// if(dp[j] < 0){continue;}
// if(v[i] <= dp[j]+m){
// ndp[j] = max(ndp[j],v[i]);
// }
// ndp[j+1] = max(dp[j]+m,ndp[j+1]);
// }
// REP(j,0,n+1){
// dp[j] = ndp[j];
// }
ll ans = -1;
ll l = 0, r = (ll)dp.size()-1;
while(l<=r){
ll mid = (l+r)>>1;
if(v[i] <= dp[mid]+m){
ans = mid;
r = mid-1;
}
else{
l = mid+1;
}
}
if(ans == -1){
dp.pb(dp.back()+m);
if(i+1==n){
// cout<<"kela\n";
}
}
else{
dp[ans] = v[i];
if(i+1 == n){
// cout<<ans; return;
}
}
}
REP(i,0,dp.size()){
// cout<<dp[i]<<" ";
}
// cout<<"\n";
cout<<(ll)dp.size()-1; return;
// cout<<dp.size(); return;
// REP(j,0,n+1){
// cout<<dp[j]<<" ";
// }
// cout<<"\n";
// REP(i,0,n+1){
// if(dp[i] >= 0){
// cout<<i; return;
// }
// }
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
// #ifndef ONLINE_JUDGE
// setIO("hello");
// #endif
ll ntc;
// cin >> ntc;
ntc = 1;
REP(tc, 1, ntc + 1)
{
// cout << "Case " << tc << ": ";
solve();
}
// cout<<"\nkela\n";
}
Compilation message
triusis.cpp: In function 'void solve()':
triusis.cpp:13:39: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
13 | #define REP(i, a, b) for (ll i = a; i < b; i++)
......
177 | REP(i,0,dp.size()){
| ~~~~~~~~~~~~~
triusis.cpp:177:2: note: in expansion of macro 'REP'
177 | REP(i,0,dp.size()){
| ^~~
triusis.cpp: In function 'void setIO(std::string)':
triusis.cpp:122:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
122 | freopen((name+".in").c_str(), "r", stdin); // see Input & Output
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
triusis.cpp:123:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
123 | freopen((name+".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Incorrect |
0 ms |
364 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Incorrect |
1 ms |
364 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
512 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
512 KB |
Output is correct |
| 2 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
