結果

問題 No.711 競技レーティング単調増加
ユーザー 👑 CleyL
提出日時 2024-02-14 13:45:15
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 280 ms / 2,000 ms
コード長 3,920 bytes
コンパイル時間 1,740 ms
コンパイル使用メモリ 137,420 KB
最終ジャッジ日時 2025-02-19 13:01:22
ジャッジサーバーID
(参考情報)
judge5 / judge4
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 41
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

//yukicoder@cpp17
#include <iostream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <cctype>
#include <climits>
#include <cassert>
#include <string>
#include <vector>
#include <set>
#include <stack>
#include <queue>
#include <map>
#include <random>
#include <bitset>
#include <complex>
#include <utility>
#include <numeric>
#include <functional>
using namespace std;
using ll = long long;
using P = pair<ll,ll>;
const ll MOD = 998244353;
const ll MODx = 1000000007;
const int INF = (1<<30)-1;
const ll LINF = (1LL<<62LL)-1;
const double EPS = (1e-10);
P ar4[4] = {{0,1},{0,-1},{1,0},{-1,0}};
P ar8[8] = {{-1,-1},{-1,0},{-1,1},{0,-1},{0,1},{1,-1},{1,0},{1,1}};
template <typename T> vector<T> make_vector(size_t a, T b) { return vector<T>(a, b); }
template <typename... Ts> auto make_vector(size_t a, Ts... ts) { return vector<decltype(make_vector(ts...))>(a, make_vector(ts...)); }
/*
cout << fixed << setprecision(n) << //n
min(max)_element(iter,iter)()
count(iter,iter,int)intiteriter
*/
/* comment outed because can cause bugs
__attribute__((constructor))
void initial() {
cin.tie(0);
ios::sync_with_stdio(false);
}
*/
template< typename T, typename F>
struct SegmentTree{
private:
int n;
vector<T> node;
F f;
T initer;
public:
SegmentTree(int n_, F f, T initer) : f(f),initer(initer) {
n = 1;
while(n < n_)n*=2;
node.resize(2*n-1, initer);
}
SegmentTree(int n_, F f,T initer, vector<T> x) : f(f),initer(initer) {
n = 1;
while(n < n_)n*=2;
node.resize(2*n-1, initer);
set(x);
}
void set(vector<T> x){
for(int i = 0; (int)x.size() > i; i++){
update(i,x[i]);
}
}
void update(int x, T val){
x += (n-1);
node[x] = val;
while(x > 0){
x = (x-1)/2;
node[x] = f(node[2*x+1],node[2*x+2]);
}
}
void add(int x, T val){
x += (n-1);
node[x] += val;
while(x > 0){
x = (x-1)/2;
node[x] = f(node[2*x+1],node[2*x+2]);
}
}
T getf(int a,int b, int k=0, int l=0, int r=-1){
if(r < 0){
r = n-1;
}
if(r < a || b < l){
return initer;
}
if(a <= l && r <= b){
return node[k];
}
T vl = getf(a,b,2*k+1,l,(l+r)/2);
T vr = getf(a,b,2*k+2,(l+r)/2+1,r);
return f(vl,vr);
}
void debug(){
int nw = 1;
int curr = 1;
cout << "---begin---" << endl;
for(int i = 0; 2*n-1 > i; i++){
cout << node[i] << " ";
if(nw == curr)cout << endl,nw *= 2, curr=1;
else curr++;
}
cout << "---end---" << endl;
}
};
template <typename T, typename F>
SegmentTree<T, F> get_segment_tree(int N, const F &f, T initer){
return SegmentTree<T,F>{N,f,initer};
}
template <typename T, typename F>
SegmentTree<T, F> get_segment_tree(int N, const F &f, T initer, vector<T> x){
return SegmentTree<T,F>{N,f,initer,x};
}
int dp[200010];
int main(){
int n;cin>>n;
vector<long long> A;
vector<long long> B;
int ans = 0;
for(int i = 0; n > i; i++){
int x;cin>>x;
x-=i;
if(x > 0){
A.push_back(x);
B.push_back(x);
}else ans++;
}
int m = B.size();
sort(B.begin(), B.end());
B.erase(unique(B.begin(), B.end()), B.end());
map<long long, long long> Bc;
for(int i = 0; B.size() > i; i++){
Bc[B[i]] = i;
}
auto seg = get_segment_tree(B.size(), [](long long a, long long b){return max(a,b);}, 0LL);
for(int i = 0; m > i; i++){
auto z = seg.getf(0, Bc[A[i]]);
seg.update(Bc[A[i]], z+1);
}
cout << m-seg.getf(0, B.size()-1)+ans << endl;
return 0;
}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0