結果
| 問題 | No.198 キャンディー・ボックス2 |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-10-01 22:27:45 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 1,000 ms |
| コード長 | 4,410 bytes |
| コンパイル時間 | 3,070 ms |
| コンパイル使用メモリ | 219,840 KB |
| 実行使用メモリ | 7,720 KB |
| 最終ジャッジ日時 | 2025-11-26 11:40:47 |
| 合計ジャッジ時間 | 4,150 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 27 |
コンパイルメッセージ
main.cpp:79:38: warning: use of ‘auto’ in parameter declaration only available with ‘-std=c++20’ or ‘-fconcepts’
79 | ll t_search_proto(ll left, ll right, auto func) {
| ^~~~
ソースコード
#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#include "bits/stdc++.h" // define macro "/D__MAI"
using namespace std;
typedef long long int ll;
#define xprintf(fmt,...) fprintf(stderr,fmt,__VA_ARGS__)
#define debugv(v) {printf("L%d %s > ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) {printf("L%d %s > ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;}
#define debugaa(m,h,w) {printf("L%d %s >\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;}}
#define ALL(v) (v).begin(),(v).end()
#define repeat(cnt,l) for(auto cnt=0ll;(cnt)<(l);++(cnt))
#define iterate(cnt,b,e) for(auto cnt=(b);(cnt)!=(e);++(cnt))
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
#define EPS 1e-12
template<typename T1, typename T2> ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }
template<typename iterator> inline size_t argmin(iterator begin, iterator end) { return distance(begin, min_element(begin, end)); }
template<typename iterator> inline size_t argmax(iterator begin, iterator end) { return distance(begin, max_element(begin, end)); }
template<typename T> T& maxset(T& to, const T& val) { return to = max(to, val); }
template<typename T> T& minset(T& to, const T& val) { return to = min(to, val); }
mt19937_64 randdev(8901016);
inline ll rand_range(ll l, ll h) {
return uniform_int_distribution<ll>(l, h)(randdev);
}
#ifdef __MAI
#define getchar_unlocked getchar
#define putchar_unlocked putchar
#endif
#ifdef __VSCC
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#endif
namespace {
#define isvisiblechar(c) (0x21<=(c)&&(c)<=0x7E)
class MaiScanner {
public:
template<typename T> void input_integer(T& var) {
var = 0;
T sign = 1;
int cc = getchar_unlocked();
for (; cc<'0' || '9'<cc; cc = getchar_unlocked())
if (cc == '-') sign = -1;
for (; '0' <= cc&&cc <= '9'; cc = getchar_unlocked())
var = (var << 3) + (var << 1) + cc - '0';
var = var*sign;
}
inline int c() { return getchar_unlocked(); }
inline MaiScanner& operator>>(int& var) {
input_integer<int>(var);
return *this;
}
inline MaiScanner& operator>>(long long& var) {
input_integer<long long>(var);
return *this;
}
inline MaiScanner& operator>>(string& var) {
int cc = getchar_unlocked();
for (; !isvisiblechar(cc); cc = getchar_unlocked());
for (; isvisiblechar(cc); cc = getchar_unlocked())
var.push_back(cc);
return *this;
}
template<typename IT> void in(IT begin, IT end) {
for (auto it = begin; it != end; ++it) *this >> *it;
}
};
}
MaiScanner scanner;
// 三分探索 しさくひん
// funcを最小化する値を求める.
// funcの極値は1つであること
// かなり無駄がありそう
ll t_search_proto(ll left, ll right, auto func) {
repeat(_,150) {
ll l = right - (2 * right - 2 * left) / 3;
ll r = right - (right - left) / 3;
ll lval = func(l);
ll rval = func(r);
// printf("%lld %lld ; %lld->%lld %lld->%lld\n", left, right,l,lval,r,rval);
if (lval <= rval) {
right = r;
}
else {
left = l;
}
if (left == right)
return left;
}
ll best = func(left);
ll bestidx = left;
for (ll t = left + 1; t <= right; ++t) {
ll f = func(t);
if (best > f) {
best = f; bestidx = t;
}
}
return bestidx;
}
ll m, n, kei;
ll cc[20];
int main() {
scanner >> m >> n;
scanner.in(cc, cc + n);
ll best = t_search_proto(0ll, (ll)2e10, [&](ll x) {
ll ctrl = 0;
ll hand = m;
repeat(i, n)
if (cc[i] > x)
hand += cc[i] - x,
ctrl += cc[i] - x;
repeat(i, n)
if (cc[i] < x)
hand -= x - cc[i],
ctrl += x - cc[i];
if (hand < 0) ctrl += 5e15; // NG
return ctrl;
});
ll ans = 0;
repeat(i, n)
ans += abs(cc[i] - best);
cout << ans << endl;
return 0;
}