結果
| 問題 |
No.448 ゆきこーだーの雨と雪 (3)
|
| ユーザー |
koyumeishi
|
| 提出日時 | 2016-11-18 22:58:29 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 165 ms / 2,000 ms |
| コード長 | 4,789 bytes |
| コンパイル時間 | 1,129 ms |
| コンパイル使用メモリ | 108,884 KB |
| 実行使用メモリ | 12,184 KB |
| 最終ジャッジ日時 | 2024-06-11 19:30:22 |
| 合計ジャッジ時間 | 5,424 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 35 |
ソースコード
#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <functional>
#include <set>
#include <ctime>
#include <random>
#include <chrono>
#include <cassert>
#include <tuple>
#include <utility>
using namespace std;
namespace {
using Integer = long long; //__int128;
template<class T, class S> istream& operator >> (istream& is, pair<T,S>& p){return is >> p.first >> p.second;}
template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}
template<class T> istream& operator , (istream& is, T& val){ return is >> val;}
template<class T, class S> ostream& operator << (ostream& os, const pair<T,S>& p){return os << p.first << " " << p.second;}
template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(size_t i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;}
template<class T> ostream& operator , (ostream& os, const T& val){ return os << " " << val;}
template<class H> void print(const H& head){ cout << head; }
template<class H, class ... T> void print(const H& head, const T& ... tail){ cout << head << " "; print(tail...); }
template<class ... T> void println(const T& ... values){ print(values...); cout << endl; }
template<class H> void eprint(const H& head){ cerr << head; }
template<class H, class ... T> void eprint(const H& head, const T& ... tail){ cerr << head << " "; eprint(tail...); }
template<class ... T> void eprintln(const T& ... values){ eprint(values...); cerr << endl; }
class range{ Integer start_, end_, step_; public: struct range_iterator{ Integer val, step_; range_iterator(Integer v, Integer step) : val(v), step_(step) {} Integer operator * (){return val;} void operator ++ (){val += step_;} bool operator != (range_iterator& x){return step_ > 0 ? val < x.val : val > x.val;} }; range(Integer len) : start_(0), end_(len), step_(1) {} range(Integer start, Integer end) : start_(start), end_(end), step_(1) {} range(Integer start, Integer end, Integer step) : start_(start), end_(end), step_(step) {} range_iterator begin(){ return range_iterator(start_, step_); } range_iterator end(){ return range_iterator( end_, step_); } };
inline string operator "" _s (const char* str, size_t size){ return move(string(str)); }
constexpr Integer my_pow(Integer x, Integer k, Integer z=1){return k==0 ? z : k==1 ? z*x : (k&1) ? my_pow(x*x,k>>1,z*x) : my_pow(x*x,k>>1,z);}
constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z=1){return k==0 ? z%M : k==1 ? z*x%M : (k&1) ? my_pow_mod(x*x%M,k>>1,M,z*x%M) : my_pow_mod(x*x%M,k>>1,M,z);}
constexpr unsigned long long operator "" _ten (unsigned long long value){ return my_pow(10,value); }
inline int k_bit(Integer x, int k){return (x>>k)&1;} //0-indexed
mt19937 mt(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count());
template<class T> string join(const vector<T>& v, const string& sep){ stringstream ss; for(size_t i=0; i<v.size(); i++){ if(i>0) ss << sep; ss << v[i]; } return ss.str(); }
inline string operator * (string s, int k){ string ret; while(k){ if(k&1) ret += s; s += s; k >>= 1; } return ret; }
}
constexpr long long mod = 9_ten + 7;
//accumulative_sum_1d acc(vec);
//long long sum = acc(lb,ub); //[lb,ub]
class accumulative_sum_1d{
using T=long long;
public:
vector<T> acc;
template<class U>
accumulative_sum_1d(const vector<U>& vec) : acc(vec.size()){
for(size_t i=0; i<vec.size(); i++) acc[i] += vec[i] + (i?acc[i-1]:0);
}
T operator () (int lb, int ub){
return acc[ub] - (lb?acc[lb-1]:0);
}
};
int main(){
int n,k;
cin >> n,k;
vector<long long> t(n),d(n);
for(int i=0; i<n; i++){
cin >> t[i],d[i];
}
long long lb = 0;
long long ub = 1000000001;
//long long ub = 50;
auto check = [&](long long dd){
int last = -2*k;
for(int i=0; i<n; i++){
if(dd <= d[i]){
if(t[i] - last < k){
return false;
}else{
last = t[i];
}
}
}
return true;
};
while(ub-lb>1){
long long mid = (lb+ub)/2;
bool ok = check(mid);
(ok? ub : lb) = mid;
}
cout << lb << endl;
d.push_back(1ll<<57);
t.push_back(1ll<<57);
vector<long long> x(n+1);
for(int i=0; i<n+1; i++){
if( d[i] > lb ){
x[i] = 1ll<<57;
}else{
x[i] = d[i];
}
}
accumulative_sum_1d acc(x);
vector<long long> dp(n+1, 1ll<<57);
dp[0] = 0;
for(int i=0; i<n; i++){
dp[i+1] = min(dp[i+1], dp[i] + x[i]);
int nx = lower_bound(t.begin(), t.end(), t[i]+k) - t.begin();
dp[nx] = min(dp[nx], dp[i] + acc(i+1, nx-1));
}
println(dp[n]);
return 0;
}
koyumeishi