#194840 (C++17) No.107 モンスター

• 問題: No.107 モンスター
• ユーザー: mai
• 提出日時: 2017-08-09 23:08:56
• 言語: C++17 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 125 ms / 5,000 ms
• コード長: 4,958 bytes
• コンパイル時間: 3,422 ms
• コンパイル使用メモリ: 230,336 KB
• 実行使用メモリ: 13,696 KB
• 最終ジャッジ日時: 2024-04-27 02:28:48
• 合計ジャッジ時間: 4,869 ms
• ジャッジサーバーID （参考情報）: judge1 / judge5

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 6,816 KB
testcase_01	AC	2 ms; 6,948 KB
testcase_02	AC	2 ms; 6,944 KB
testcase_03	AC	2 ms; 6,940 KB
testcase_04	AC	2 ms; 6,940 KB
testcase_05	AC	2 ms; 6,940 KB
testcase_06	AC	2 ms; 6,944 KB
testcase_07	AC	2 ms; 6,940 KB
testcase_08	AC	2 ms; 6,940 KB
testcase_09	AC	2 ms; 6,944 KB
testcase_10	AC	2 ms; 6,940 KB
testcase_11	AC	2 ms; 6,944 KB
testcase_12	AC	2 ms; 6,944 KB
testcase_13	AC	43 ms; 6,940 KB
testcase_14	AC	92 ms; 8,576 KB
testcase_15	AC	91 ms; 8,576 KB
testcase_16	AC	2 ms; 6,940 KB
testcase_17	AC	13 ms; 6,944 KB
testcase_18	AC	51 ms; 13,696 KB
testcase_19	AC	48 ms; 13,696 KB
testcase_20	AC	54 ms; 6,940 KB
testcase_21	AC	38 ms; 6,944 KB
testcase_22	AC	83 ms; 8,576 KB
testcase_23	AC	125 ms; 13,696 KB
testcase_24	AC	93 ms; 13,568 KB

コンパイルメッセージ

main.cpp: In member function '{anonymous}::MaiScanner& {anonymous}::MaiScanner::operator>>(std::string&)':
main.cpp:63:9: warning: no return statement in function returning non-void [-Wreturn-type]
   63 |         }
      |         ^

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 debugm(m) {printf("L%d %s \n",__LINE__,#m);for(auto v:m){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,w,h) {printf("L%d %s >\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;}}
#define debugaar(m,w,h) {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=0;cnt<(l);++cnt)
#define iterate(cnt,b,e) for(auto cnt=(b);cnt!=(e);++cnt)
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
template<typename T1, typename T2>
ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }

mt19937 mt(8901016);
inline int rand_int(int l, int h) {
    return uniform_int_distribution<>(l, h)(mt);
}

#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);
        }
        template<typename IT> void in(IT begin, IT end) {
            for (auto it = begin; it != end; ++it) *this >> *it;
        }
    };
}
MaiScanner scanner;


int n, len;
int result = -1;

int dd[20];

map<vector<int>, int> memo;

// 嘘解法成らず
// -------------------------
int dfs(vector<int> used, int life, int max_life, int m = 0) {
    if (m == n) return life;

    auto memoit = memo.find(used);
    if (memoit != memo.end() && memoit->second < life) return 0;
    
    int best = 0;

    repeat(i, n) {
        if (used[i]) continue;

        vector<int> new_used = used;
        new_used[i] = true;

        if (dd[i] < 0) {
            // わるいスライム
            int new_life = life + dd[i];
            if (new_life <= 0) continue;
            
            best = max(best, dfs(new_used, new_life, max_life + 100, m + 1));
        }
        else {
            // ホイミン
            int new_life = min(max_life, life + dd[i]);
            best = max(best, dfs(new_used, new_life, max_life, m + 1));
        }
    }
    return memo[used] = best;
}

void calc(const vector<int>& used) {

    int life;
    int max_life = 100;

    life = memo[used];
    if (life == 0) return;

    repeat(i, n) {
        if (used[i] && dd[i] < 0) {
            max_life += 100;
        }
    }

    int best = 0;

    repeat(i, n) {
        if (used[i]) continue;

        vector<int> new_used = used;
        new_used[i] = true;

        if (dd[i] < 0) {
            // わるいスライム
            int new_life = life + dd[i];
            if (new_life <= 0) continue;

            memo[new_used] = max(memo[new_used], new_life);
        }
        else {
            // ホイミン
            int new_life = min(max_life, life + dd[i]);
            memo[new_used] = max(memo[new_used], new_life);
        }
    }
}

int main() {

    scanner >> n;
    repeat(i, n) {
        scanner >> dd[i];
    }

    //sort(dd, dd + n, greater<int>());

    // cout << dfs(vector<int>(n), 100, 100) << endl;
    
    vector<int> used(n, 0);

    memo[used] = 100;

    iterate(bit, 0, (1 << n) - 1) {
        for (int i = 0, b = bit; i < n; ++i, b >>= 1)
            used[i] = b & 1;

        calc(used);
    }
    
    fill(ALL(used), 1);
    cout << memo[used] << endl;
    
    // for (auto x : memo){
    //     debugv(x.first)
    //     cout << x.second << endl;
    // }

    return 0;

}