結果
問題 | No.1862 Copy and Paste |
ユーザー |
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提出日時 | 2022-03-04 23:19:27 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 54 ms / 2,000 ms |
コード長 | 2,564 bytes |
コンパイル時間 | 1,331 ms |
コンパイル使用メモリ | 117,756 KB |
最終ジャッジ日時 | 2025-01-28 06:27:38 |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 27 |
ソースコード
#include <iostream>#include <algorithm>#include <iomanip>#include <vector>#include <queue>#include <deque>#include <set>#include <map>#include <tuple>#include <cmath>#include <numeric>#include <functional>#include <cassert>#define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl;#define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl;template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }using namespace std;typedef long long ll;template<typename T>vector<vector<T>> vec2d(int n, int m, T v){return vector<vector<T>>(n, vector<T>(m, v));}template<typename T>vector<vector<vector<T>>> vec3d(int n, int m, int k, T v){return vector<vector<vector<T>>>(n, vector<vector<T>>(m, vector<T>(k, v)));}template<typename T>void print_vector(vector<T> v, char delimiter=' '){if(v.empty()) {cout << endl;return;}for(int i = 0; i+1 < v.size(); i++) cout << v[i] << delimiter;cout << v.back() << endl;}using P = pair<int, int>;vector<int> facs(int a){vector<int> ans;for(int x = 1; x*x <= a; x++){if(a%x == 0){ans.push_back(x);}if(x*x != a) ans.push_back(x);}sort(ans.begin(), ans.end());return ans;}int main(){ios::sync_with_stdio(false);cin.tie(0);cout << setprecision(10) << fixed;ll a, b, n; cin >> a >> b >> n;if(n == 1){cout << 0 << endl;return 0;}auto f = [&](ll x){return a+b*(x-1);};auto judge = [&](ll a, int r){ll x = 1;for(int i = 0; i < r; i++){x *= a;if(x >= n) return true;}return false;};ll ans = 4e18;for(int i = 1; i <= 30; i++){ll l = 0, r = n+1;while(r-l > 1){ll a = (l+r)/2;if(judge(a, i)) r = a;else l = a;}ll tmp = 1;ll score = 0;for(int j = 0; j < i; j++){int rem = i-j;bool ok = false;ll tt = tmp;for(int k = 0; k < rem; k++){tt *= r-1;if(tt >= n) ok = true;}int x = r;if(ok) x--;tmp *= x;score += f(x);}assert(tmp >= n);chmin(ans, score);}cout << ans << endl;}