結果

問題 No.90 品物の並び替え
ユーザー nn1k_
提出日時 2019-03-12 21:54:11
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 2,630 bytes
コンパイル時間 1,059 ms
コンパイル使用メモリ 107,472 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-23 15:53:46
合計ジャッジ時間 1,649 ms
ジャッジサーバーID
(参考情報)
judge4 / judge1
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 1
other AC * 9
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 <iostream>
#include <vector>
#include <map>
#include <unordered_map>
#include <limits>
#include <algorithm>
#include <queue>
#include <set>
#include <unordered_map>
#include <numeric>
#include <cmath>
#include <iomanip>
#include <stack>
#include <string>
#include <functional>
using namespace std;
using i64 = long long int;
using ui64 = unsigned long long int;
using P = pair<int, int>;
constexpr int INF = (1 << 30);
constexpr i64 INF64 = (1LL << 60);
constexpr int MOD = 1000000000 + 7;
int dx[] = { -1, 0, 1, 0 };
int dy[] = { 0, 1, 0, -1 };
template <typename T, typename U>
static inline std::vector<U> makeNdVector(T n, U val) noexcept {
static_assert(std::is_integral<T>::value, "[makeNdVector] 1st argument must be an integer type");
return std::vector<U>(std::forward<T>(n), std::forward<U>(val));
}
template <typename T, typename ...Args>
static inline decltype(auto) makeNdVector(T n, Args... args) noexcept {
static_assert(std::is_integral<T>::value, "[makeNdVector] 1st argument must be an integer type");
return std::vector<decltype(makeNdVector(std::forward<Args>(args)...))>(std::forward<T>(n), makeNdVector(std::forward<Args>(args)...));
}
template <typename T>
void print(vector<T> vec)
{
for (auto &e : vec)
cout << e << " ";
cout << endl;
}
template <typename T>
T gcd(T x, T y) {
if (x == 0 || y == 0) return 0;
T r;
while ((r = x % y) != 0) {
x = y;
y = r;
}
return y;
}
template <typename T>
T lcm(T x, T y) {
if (x == 0 || y == 0) return 0;
return (x / gcd(x, y) * y);
}
int next_combination(int sub)
{
int x = sub & -sub, y = sub + x;
return (((sub & ~y) / x) >> 1) | y;
}
std::uint64_t combination(int n, int r) {
if (n < 0 || r < 0) return 0;
if (n < r) return 0;
std::uint64_t k = 1;
for (std::uint64_t d = 1; d <= r; ++d) {
k *= n--;
k /= d;
}
return k;
}
bool check(string str) {
for (int i = 0; i < str.length() / 2; ++i) {
if (str[i] != str[str.length() - 1 - i]) {
return false;
}
}
return true;
}
signed main() {
cin.tie(0);
ios::sync_with_stdio(false);
using P = pair<i64, i64>;
int N, M; cin >> N >> M;
auto g = makeNdVector(N, N, 0LL);
for (int i = 0; i < M; ++i) {
int a, b, s; cin >> a >> b >> s;
g[a][b] = s;
}
vector<i64> dp(1 << N);
dp[0] = 0;
for (int i = 0; i < (1 << N); ++i) {
for (int j = 0; j < N; ++j) {
if (((1 << j)&i) == 0) {
i64 sum = 0;
for (int k = 0; k < N; ++k) {
if (((1 << k)&i)) sum += g[k][j];
}
dp[i | (1 << j)] = max(dp[i | (1 << j)], dp[i] + sum);
}
}
}
cout << dp[(1 << N) - 1] << endl;
}
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