結果
| 問題 | No.357 品物の並び替え (Middle) |
| ユーザー |
 kitakitalily
|
| 提出日時 | 2020-01-03 14:50:18 |
| 言語 | Java21 (openjdk 21) |
| 結果 |
AC
|
| 実行時間 | 84 ms / 5,000 ms |
| コード長 | 8,923 bytes |
| コンパイル時間 | 2,569 ms |
| コンパイル使用メモリ | 79,656 KB |
| 実行使用メモリ | 55,460 KB |
| 最終ジャッジ日時 | 2024-05-02 07:15:15 |
| 合計ジャッジ時間 | 4,512 ms |
|
ジャッジサーバーID （参考情報） |
judge4 / judge3 |
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テストケース
テストケース表示| 入力 | 結果 | 実行時間 実行使用メモリ |
|---|---|---|
| testcase_00 | AC | 59 ms
54,540 KB |
| testcase_01 | AC | 59 ms
54,476 KB |
| testcase_02 | AC | 57 ms
54,416 KB |
| testcase_03 | AC | 57 ms
54,020 KB |
| testcase_04 | AC | 57 ms
54,400 KB |
| testcase_05 | AC | 57 ms
54,476 KB |
| testcase_06 | AC | 57 ms
54,124 KB |
| testcase_07 | AC | 57 ms
54,324 KB |
| testcase_08 | AC | 57 ms
54,140 KB |
| testcase_09 | AC | 76 ms
55,396 KB |
| testcase_10 | AC | 61 ms
54,440 KB |
| testcase_11 | AC | 60 ms
54,416 KB |
| testcase_12 | AC | 84 ms
55,460 KB |
| testcase_13 | AC | 75 ms
55,312 KB |
| testcase_14 | AC | 75 ms
55,308 KB |
| testcase_15 | AC | 59 ms
54,100 KB |
| testcase_16 | AC | 69 ms
54,984 KB |
| testcase_17 | AC | 60 ms
54,032 KB |
ソースコード
import java.util.*;
import java.io.*;
public class Main {
static int size = 200000;
static long[] fac = new long[size];
static long[] finv = new long[size];
static long[] inv = new long[size];
static int mod = 1000000007;
static int INF = Integer.MAX_VALUE;
static int[] dx = {-2,-2,1,-1};
static int[] dy = {1,-1,-2,-2};
public static void main(String[] args){
FastScanner scanner = new FastScanner();
int n = scanner.nextInt();
int m = scanner.nextInt();
int[][] mat = new int[20][20];
for(int i = 0; i < m; i++){
int item1 = scanner.nextInt();
int item2 = scanner.nextInt();
int score = scanner.nextInt();
mat[item1][item2] = score;
}
int[] dp = new int[1<<n];
for(int mask = 0; mask < (1<<n); mask++){
for(int i = 0; i < n; i++){
if(((mask>>i)&1) == 0){
int s = 0;
for(int j = 0; j < n; j++){
if(((mask>>j)&1) == 0){
s += mat[j][i];
}
}
dp[mask+(1<<i)] = Math.max(dp[mask+(1<<i)],dp[mask]+s);
}
}
}
System.out.println(dp[(1<<n)-1]);
}
public static boolean isPrime(int n){
if(n == 1) return false;
if(n == 2 || n == 3) return true;
for(int i = 2; i <= Math.sqrt(n); i++){
if(n % i == 0) return false;
}
return true;
}
//n,mの最大公約数
public static long gcd(long n, long m){
if(m > n) return gcd(m,n);
if(m == 0) return n;
return gcd(m, n%m);
}
static class Edge{
int to;
Edge(int to){
this.to = to;
}
}
static class Edge2 implements Comparable<Edge2>{
int from;
int to;
int id;
Edge2(int from, int to, int id){
this.from = from;
this.to = to;
this.id = id;
}
public int compareTo(Edge2 e){
return id-e.id;
}
}
static class UnionFind {
int[] parent;
public UnionFind(int size) {
parent = new int[size];
Arrays.fill(parent, -1);
}
public boolean unite(int x, int y) {
x = root(x);
y = root(y);
if (x != y) {
if (parent[y] < parent[x]) {
int tmp = y;
y = x;
x = tmp;
}
parent[x] += parent[y];
parent[y] = x;
return true;
}
return false;
}
public boolean same(int x, int y) {
return root(x) == root(y);
}
public int root(int x) {
return parent[x] < 0 ? x : (parent[x] = root(parent[x]));
}
public int size(int x) {
return -parent[root(x)];
}
}
static class BIT{
int n;
int[] bit;
public BIT(int n){
this.n = n;
bit = new int[n+1];
}
void add(int idx, int val){
for(int i = idx+1; i <= n; i += i&(-i)) bit[i-1] += val;
}
int sum(int idx){
int res = 0;
for(int i = idx+1; i > 0; i -= i&(-i)) res += bit[i-1];
return res;
}
int sum(int begin, int end){
if(begin == 0) return sum(end);
return sum(end)-sum(begin-1);
}
}
static class RMQ {
private int size_, dat[];
private int query_(int a, int b, int k, int l, int r) {
if(r <= a || b <= l) return 2147483647;
if(a <= l && r <= b) return dat[k];
int lc = query_(a, b, 2 * k, l, (l + r) / 2);
int rc = query_(a, b, 2 * k + 1, (l + r) / 2, r);
return Math.min(lc, rc);
}
RMQ(int s) {
for(size_ = 1; size_ < s;) size_ *= 2;
dat = new int[size_ * 2];
for(int i = 0; i < size_ * 2; i++) dat[i] = 2147483647;
}
public void update(int pos, int x) {
pos += size_; dat[pos] = x;
while(pos > 1) {
pos /= 2;
dat[pos] = Math.min(dat[2 * pos], dat[2 * pos + 1]);
}
}
public int query(int l, int r) {
return query_(l, r, 1, 0, size_);
}
}
public static int upperBound(long[] array, long value) {
int low = 0;
int high = array.length;
int mid;
while( low < high ) {
mid = ((high - low) >>> 1) + low; // (high + low) / 2
if( array[mid] <= value ) {
low = mid + 1;
} else {
high = mid;
}
}
return low;
}
public static final int lowerBound(final long[] arr, final long value) {
int low = 0;
int high = arr.length;
int mid;
while (low < high){
mid = ((high - low) >>> 1) + low; //(low + high) / 2 (オーバーフロー対策)
if (arr[mid] < value) {
low = mid + 1;
} else {
high = mid;
}
}
return low;
}
//繰り返し二乗法
public static long pow(long x, long n){
long ans = 1;
while(n > 0){
if((n & 1) == 1){
ans = ans * x;
ans %= mod;
}
x = x * x % mod;
n >>= 1;
}
return ans;
}
public static long div(long x, long y){
return (x*pow(y, mod-2))%mod;
}
//fac, inv, finvテーブルの初期化、これ使う場合はinitComb()で初期化必要
public static void initComb(){
fac[0] = finv[0] = inv[0] = fac[1] = finv[1] = inv[1] = 1;
for (int i = 2; i < size; ++i) {
fac[i] = fac[i - 1] * i % mod;
inv[i] = mod - (mod / i) * inv[(int) (mod % i)] % mod;
finv[i] = finv[i - 1] * inv[i] % mod;
}
}
//nCk % mod
public static long comb(int n, int k){
return fac[n] * finv[k] % mod * finv[n - k] % mod;
}
//n! % mod
public static long fact(int n){
return fac[n];
}
//(n!)^-1 with % mod
public static long finv(int n){
return finv[n];
}
static class Pair implements Comparable<Pair>{
int first, second;
Pair(int a, int b){
first = a;
second = b;
}
@Override
public boolean equals(Object o){
if (this == o) return true;
if (!(o instanceof Pair)) return false;
Pair p = (Pair) o;
return first == p.first && second == p.second;
}
@Override
public int compareTo(Pair p){
//return first == p.first ? second - p.second : first - p.first; //firstで昇順にソート
//return (first == p.first ? second - p.second : first - p.first) * -1; //firstで降順にソート
return second == p.second ? first - p.first : second - p.second;//secondで昇順にソート
//return (second == p.second ? first - p.first : second - p.second)*-1;//secondで降順にソート
//return first * 1.0 / second > p.first * 1.0 / p.second ? 1 : -1; // first/secondの昇順にソート
//return first * 1.0 / second < p.first * 1.0 / p.second ? 1 : -1; // first/secondの降順にソート
//return second * 1.0 / first > p.second * 1.0 / p.first ? 1 : -1; // second/firstの昇順にソート
//return second * 1.0 / first < p.second * 1.0 / p.first ? 1 : -1; // second/firstの降順にソート
//return Math.atan2(second, first) > Math.atan2(p.second, p.first) ? 1 : -1; // second/firstの昇順にソート
//return first + second > p.first + p.second ? 1 : -1; //first+secondの昇順にソート
//return first + second < p.first + p.second ? 1 : -1; //first+secondの降順にソート
//return first - second < p.first - p.second ? 1 : -1; //first-secondの降順にソート
//return second - first < p.second - p.first ? 1 : -1; //first-secondの昇順にソート
//return second - first < p.second - p.first ? -1 : 1; //second-firstの昇順にソート
//return Math.atan2(second,first) > Math.atan2(p.second, p.first) ? 1 : -1;
}
}
private static class FastScanner {
private final InputStream in = System.in;
private final byte[] buffer = new byte[1024];
private int ptr = 0;
private int buflen = 0;
private boolean hasNextByte() {
if (ptr < buflen) {
return true;
}else{
ptr = 0;
try {
buflen = in.read(buffer);
} catch (IOException e) {
e.printStackTrace();
}
if (buflen <= 0) {
return false;
}
}
return true;
}
private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
public String next() {
if (!hasNext()) throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = readByte();
while(isPrintableChar(b)) {
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
public long nextLong() {
if (!hasNext()) throw new NoSuchElementException();
long n = 0;
boolean minus = false;
int b = readByte();
if (b == '-') {
minus = true;
b = readByte();
}
if (b < '0' || '9' < b) {
throw new NumberFormatException();
}
while(true){
if ('0' <= b && b <= '9') {
n *= 10;
n += b - '0';
}else if(b == -1 || !isPrintableChar(b)){
return minus ? -n : n;
}else{
throw new NumberFormatException();
}
b = readByte();
}
}
public int nextInt() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
return (int) nl;
}
public double nextDouble() { return Double.parseDouble(next());}
}
}