結果
| 問題 |
No.798 コレクション
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-03-15 21:31:59 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
AC
|
| 実行時間 | 58 ms / 2,000 ms |
| コード長 | 3,344 bytes |
| コンパイル時間 | 785 ms |
| コンパイル使用メモリ | 80,240 KB |
| 実行使用メモリ | 35,456 KB |
| 最終ジャッジ日時 | 2024-07-01 20:28:28 |
| 合計ジャッジ時間 | 2,488 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 23 |
ソースコード
#include <iostream>
#include <algorithm>
#include <vector>
#include <string.h>
#include <cmath>
#include <iomanip>
using namespace std;
#define mod (long)(1e9 + 7)
#define all(x) (x).begin(), (x).end()
#define bitcount(n) __builtin_popcountl(long(n))
#define fcout cout << fixed << setprecision(15)
#define highest(x) (63 - __builtin_clzl(x))
template<class T> inline void YES(T condition){ if(condition) cout << "YES" << endl; else cout << "NO" << endl; }
template<class T> inline void Yes(T condition){ if(condition) cout << "Yes" << endl; else cout << "No" << endl; }
template<class T> inline void POSS(T condition){ if(condition) cout << "POSSIBLE" << endl; else cout << "IMPOSSIBLE" << endl; }
template<class T> inline void Poss(T condition){ if(condition) cout << "Possible" << endl; else cout << "Impossible" << endl; }
template<class T> inline void First(T condition){ if(condition) cout << "First" << endl; else cout << "Second" << endl; }
template<class T = string, class U = char>int character_count(T text, U character){ int ans = 0; for(U i: text){ ans += (i == character); } return ans; }
long power(long base, long exponent, long module){ if(exponent % 2){ return power(base, exponent - 1, module) * base % module; }else if(exponent){ long root_ans = power(base, exponent / 2, module); return root_ans * root_ans % module; }else{ return 1; }}
struct position{ int y, x; }; position mv[4] = {{-1, 0}, {0, 1}, {1, 0}, {0, -1}}; // double euclidean(position first, position second){ return sqrt((second.x - first.x) * (second.x - first.x) + (second.y - first.y) * (second.y - first.y)); }
template<class T, class U> string to_string(pair<T, U> x){ return to_string(x.first) + "," + to_string(x.second); } string to_string(string x){ return x; }
template<class itr> void array_output(itr start, itr goal){ string ans; for(auto i = start; i != goal; i++) ans += to_string(*i) + " "; if(!ans.empty()) ans.pop_back(); cout << ans << endl; }
template<class itr> void cins(itr start, itr goal){ for(auto i = start; i != goal; i++){ cin >> (*i); } }
template<class T> T gcd(T a, T b){ if(a && b){ return gcd(min(a, b), max(a, b) % min(a, b)); }else{ return a; }} template<class T> T lcm(T a, T b){ return a / gcd(a, b) * b; }
struct combination{ vector<long> fact, inv; combination(int sz) : fact(sz + 1), inv(sz + 1){ fact[0] = 1; for(int i = 1; i <= sz; i++){ fact[i] = fact[i - 1] * i % mod; } inv[sz] = power(fact[sz], mod - 2, mod); for(int i = sz - 1; i >= 0; i--){ inv[i] = inv[i + 1] * (i + 1) % mod; } } long C(int p, int q) const{ if(q < 0 || p < q) return 0; return (fact[p] * inv[q] % mod * inv[p - q] % mod); } };
int N, cnt = 0;
vector<pair<long, long>> BA;
long dp[2020][2020];
long buy(int now, int day){
if(now == N){
return (day != cnt) * 1e18;
}else if(dp[now][day] != -1){
return dp[now][day];
}else{
return dp[now][day] = min(buy(now + 1, day), buy(now + 1, day + 1) + BA[now].second + BA[now].first * day);
}
}
int main(){
cin >> N;
BA.resize(N);
for(int i = 0; i < N; i++){
cin >> BA[i].second >> BA[i].first;
}
sort(all(BA), greater<pair<long, long>>());
int sum = 0;
while(sum < N){
if(cnt % 2){
sum++;
}
cnt++;
sum++;
}
memset(dp, -1, sizeof(dp));
cout << buy(0, 0) << endl;
}