結果
| 問題 |
No.1345 Beautiful BINGO
|
| コンテスト | |
| ユーザー |
emthrm
|
| 提出日時 | 2021-01-16 13:17:51 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 507 ms / 2,000 ms |
| コード長 | 3,715 bytes |
| コンパイル時間 | 2,383 ms |
| コンパイル使用メモリ | 206,984 KB |
| 最終ジャッジ日時 | 2025-01-17 21:51:30 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 61 |
ソースコード
#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 1000000007;
// constexpr int MOD = 998244353;
constexpr int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1};
constexpr int dy8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dx8[] = {0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
IOSetup() {
std::cin.tie(nullptr);
std::ios_base::sync_with_stdio(false);
std::cout << fixed << setprecision(20);
}
} iosetup;
template <typename T>
struct WarshallFloyd {
std::vector<std::vector<T>> graph, dist;
WarshallFloyd(const std::vector<std::vector<T>> &graph, const T TINF) : graph(graph), dist(graph), TINF(TINF) {
n = graph.size();
internal.assign(n, std::vector<int>(n, -1));
for (int k = 0; k < n; ++k) for (int i = 0; i < n; ++i) for (int j = 0; j < n; ++j) {
if (dist[i][j] > dist[i][k] + dist[k][j]) {
dist[i][j] = dist[i][k] + dist[k][j];
internal[i][j] = k;
}
}
}
void add(int src, int dst, T cost) {
srcs.emplace_back(src);
dsts.emplace_back(dst);
costs.emplace_back(cost);
}
void calc() {
std::set<int> vers;
int sz = srcs.size();
for (int i = 0; i < sz; ++i) {
int s = srcs[i], t = dsts[i];
T cost = costs[i];
if (cost < graph[s][t]) graph[s][t] = cost;
if (dist[s][t] >= cost) {
dist[s][t] = cost;
internal[s][t] = -1;
}
vers.emplace(s);
vers.emplace(t);
}
for (int v : vers) {
for (int i = 0; i < n; ++i) for (int j = 0; j < n; ++j) {
if (dist[i][j] > dist[i][v] + dist[v][j]) {
dist[i][j] = dist[i][v] + dist[v][j];
internal[i][j] = v;
}
}
}
srcs.clear();
dsts.clear();
costs.clear();
}
bool has_negative_cycle() const {
for (int i = 0; i < n; ++i) {
if (dist[i][i] < 0) return true;
}
return false;
}
std::vector<int> build_path(int s, int t) const {
std::vector<int> res;
if (dist[s][t] != TINF) {
build_path(s, t, res);
res.emplace_back(t);
}
return res;
}
private:
const T TINF;
int n;
std::vector<std::vector<int>> internal;
std::vector<int> srcs, dsts;
std::vector<T> costs;
void build_path(int s, int t, std::vector<int> &path) const {
int k = internal[s][t];
if (k == -1) {
path.emplace_back(s);
} else {
build_path(s, k, path);
build_path(k, t, path);
}
}
};
int main() {
int n, m; cin >> n >> m;
vector<vector<int>> a(n, vector<int>(n)); REP(i, n) REP(j, n) cin >> a[i][j];
int ans = INF;
REP(x, 2) REP(y, 2) REP(z, 1 << n) {
vector mag(n, vector(n, false));
if (x) {
REP(i, n) mag[i][i] = true;
}
if (y) {
REP(i, n) mag[i][n - 1 - i] = true;
}
REP(i, n) {
if (z >> i & 1) fill(ALL(mag[i]), true);
}
vector<int> need(n, 0);
int cur = 0;
REP(i, n) REP(j, n) {
if (mag[i][j]) {
cur += a[i][j];
} else {
need[j] += a[i][j];
}
}
sort(ALL(need), greater<int>());
int row = x + y + __builtin_popcount(z);
if (row + n >= m) {
REP(_, m - row) {
cur += need.back();
need.pop_back();
}
chmin(ans, cur);
}
}
cout << ans << '\n';
return 0;
}
emthrm