結果
| 問題 |
No.915 Plus Or Multiple Operation
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-10-12 15:54:47 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 4,693 bytes |
| コンパイル時間 | 1,709 ms |
| コンパイル使用メモリ | 174,356 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-11-07 03:19:13 |
| 合計ジャッジ時間 | 2,310 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | WA * 3 |
| other | WA * 10 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
template <class T, class U>ostream &operator<<(ostream &o, const map<T, U>&obj) {o << "{"; for (auto &x : obj) o << " {" << x.first << " : " << x.second << "}" << ","; o << " }"; return o;}
template <class T>ostream &operator<<(ostream &o, const set<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
template <class T>ostream &operator<<(ostream &o, const multiset<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
template <class T>ostream &operator<<(ostream &o, const vector<T>&obj) {o << "{"; for (int i = 0; i < (int)obj.size(); ++i)o << (i > 0 ? ", " : "") << obj[i]; o << "}"; return o;}
template <class T, class U>ostream &operator<<(ostream &o, const pair<T, U>&obj) {o << "{" << obj.first << ", " << obj.second << "}"; return o;}
template <template <class tmp> class T, class U> ostream &operator<<(ostream &o, const T<U> &obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr)o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
void print(void) {cout << endl;}
template <class Head> void print(Head&& head) {cout << head;print();}
template <class Head, class... Tail> void print(Head&& head, Tail&&... tail) {cout << head << " ";print(forward<Tail>(tail)...);}
template<class T> class SegmentTree {
size_t length; //セグメント木の最下段の要素の数(vectorの要素の数を超える2べきの数)
T init; //各ノードの初期値
vector<T> node; //ノード
function<T(T,T)> funcNode; //node同士の演算
function<T(T,T)> funcMerge; //nodeとvarの演算
public:
//vectorで初期化
SegmentTree(const vector<T> & vec, const T init, function<T(T,T)> funcNode, function<T(T,T)> funcMerge) : init(init), funcNode(funcNode), funcMerge(funcMerge) {
for (length = 1; length < vec.size(); length *= 2);
node.resize(2 * length, init);
for (int i = 0; i < vec.size(); ++i) node[i + length] = vec[i];
for (int i = length - 1; i >= 0; --i) node[i] = funcNode(node[(i<<1)+0],node[(i<<1)+1]);
}
//lengthだけで初期化
SegmentTree(const size_t num, const T init, function<T(T,T)> funcNode, function<T(T,T)> funcMerge) : init(init), funcNode(funcNode), funcMerge(funcMerge) {
for (length = 1; length < num; length *= 2);
node.resize(2 * length, init);
}
//idx : 0-indexed
void update(size_t idx, const T var) {
if(idx < 0 || length <= idx) return;
idx += length;
node[idx] = funcMerge(node[idx],var);
while(idx >>= 1) node[idx] = funcNode(node[(idx<<1)+0],node[(idx<<1)+1]);
}
//[l,r)
T get(int l, int r) {
if (l < 0 || length <= l || r < 0 || length < r) return init;
T vl = init, vr = init;
for(l += length, r += length; l < r; l >>=1, r >>=1) {
if(l&1) vl = funcNode(vl,node[l++]);
if(r&1) vr = funcNode(vr,node[--r]);
}
return funcNode(vl,vr);
}
void print(){
cout << "{ " << get(0,1);
for(int i = 1; i < length; ++i) cout << ", " << get(i,i+1);
cout << " }" << endl;
// for(int i = 1,j = 1; i < 2*length; ++i) {
// cout << node[i] << " ";
// if(i==((1<<j)-1) && ++j) cout << endl;
// }
}
};
//GCD
//verify https://atcoder.jp/contests/abc125/tasks/abc125_c
//SUM
//verify https://atcoder.jp/contests/arc077/tasks/arc077_c
//MIN
//verify https://atcoder.jp/contests/bitflyer2018-final-open/tasks/bitflyer2018_final_c
//MAX
//verify https://atcoder.jp/contests/wupc2019/tasks/wupc2019_d
// //一点加算 + 区間総和
// function<ll(ll,ll)> funcNode = [&](ll a,ll b){return a+b;};
// function<ll(ll,ll)> funcMerge = [&](ll a,ll b){return a+b;};
// //一点更新 + 区間GCD
// function<ll(ll,ll)> funcNode = GCD;
// function<ll(ll,ll)> funcMerge = [&](ll a,ll b){return b;};
// //一点更新 + 区間最小
// function<ll(ll,ll)> funcNode = [&](ll a,ll b){return min(a,b);};
// function<ll(ll,ll)> funcMerge = [&](ll a,ll b){return b;};
int main() {
int A,B,C; cin >> A >> B >> C;
if(C==1){
cout << -1 << endl;
return 0;
}
// //一点加算 + 区間総和
function<int(int,int)> funcNode = [&](int a,int b){return min(a,b);};
function<int(int,int)> funcMerge = [&](int a,int b){return b;};
SegmentTree<int> dp(A+1,A+2,funcNode,funcMerge);
dp.update(0,0);
for(int i = 1; i <= A; ++i) {
int D = dp.get(i,i+1);
int E = (i%C?A+2:dp.get(i/C,i/C+1));
int F = dp.get(max(i-C+1,0),i);
dp.update(i,min({D,E,F})+1);
}
cout << (ll)dp.get(A,A+1)*(ll)B << endl;
return 0;
}