結果

問題 No.91 赤、緑、青の石
ユーザー kei
提出日時 2018-05-01 14:05:53
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 2 ms / 5,000 ms
コード長 2,271 bytes
コンパイル時間 1,908 ms
コンパイル使用メモリ 165,940 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-24 07:14:32
合計ジャッジ時間 2,467 ms
ジャッジサーバーID
(参考情報)
judge2 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 28
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

#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; }
template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " "
    ;} return out; }
template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out
    << Mat[i];} return out; }
template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out <<
    it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; }
/*
<url:https://yukicoder.me/problems/no/91>
============================================================
31使1
21
=================================================================
=============================================================
================================================================
*/
bool C(ll m,ll R,ll G,ll B){
ll enough_stone = 0;
ll hope_stone = 0;
enough_stone += max(R - m,0LL)/2;
enough_stone += max(G - m,0LL)/2;
enough_stone += max(B - m,0LL)/2;
hope_stone += max(m - R,0LL);
hope_stone += max(m - G,0LL);
hope_stone += max(m - B,0LL);
return enough_stone>=hope_stone;
}
ll solve(){
ll res = 0;
ll R,G,B; cin >> R >> G >> B;
ll& l = res;
ll r = INF;
while(r-l>1){
ll m = (l+r)/2;
if(C(m,R,G,B)){
l = m;
}else{
r = m;
}
}
C(l,R,G,B);
return res;
}
int main(void) {
cin.tie(0); ios_base::sync_with_stdio(false);
cout << solve() << endl;
return 0;
}
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