#881471 (Java21) No.2351 Butterfly in Summer

• 問題: No.2351 Butterfly in Summer
• ユーザー: Paras Yadav
• 提出日時: 2023-06-16 21:34:57
• 言語: Java21 (openjdk 21)
• 結果: AC
• 実行時間: 46 ms / 2,000 ms
• コード長: 13,396 bytes
• コンパイル時間: 4,508 ms
• コンパイル使用メモリ: 79,252 KB
• 実行使用メモリ: 49,936 KB
• 最終ジャッジ日時: 2023-09-06 18:52:40
• 合計ジャッジ時間: 6,651 ms
• ジャッジサーバーID （参考情報）: judge12 / judge11

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	44 ms; 49,244 KB
testcase_01	AC	44 ms; 49,368 KB
testcase_02	AC	44 ms; 49,288 KB
testcase_03	AC	44 ms; 49,332 KB
testcase_04	AC	44 ms; 49,936 KB
testcase_05	AC	44 ms; 49,624 KB
testcase_06	AC	44 ms; 49,504 KB
testcase_07	AC	44 ms; 49,336 KB
testcase_08	AC	43 ms; 49,360 KB
testcase_09	AC	44 ms; 49,812 KB
testcase_10	AC	44 ms; 49,440 KB
testcase_11	AC	43 ms; 49,352 KB
testcase_12	AC	44 ms; 49,376 KB
testcase_13	AC	44 ms; 49,248 KB
testcase_14	AC	43 ms; 49,468 KB
testcase_15	AC	43 ms; 49,516 KB
testcase_16	AC	45 ms; 49,372 KB
testcase_17	AC	44 ms; 49,680 KB
testcase_18	AC	45 ms; 49,492 KB
testcase_19	AC	44 ms; 49,336 KB
testcase_20	AC	45 ms; 49,376 KB
testcase_21	AC	46 ms; 49,428 KB
testcase_22	AC	45 ms; 49,840 KB
testcase_23	AC	44 ms; 49,504 KB

ソースコード

/*
                                          _ _             
                                         | (_)            
  _ __   __ _ _ __ __ _ ___  ___ ___   __| |_ _ __   __ _ 
 | '_ \ / _` | '__/ _` / __|/ __/ _ \ / _` | | '_ \ / _` |
 | |_) | (_| | | | (_| \__ \ (_| (_) | (_| | | | | | (_| |
 | .__/ \__,_|_|  \__,_|___/\___\___/ \__,_|_|_| |_|\__, |
 | |                                                 __/ |
 |_|                                                |___/ 

*/
import java.lang.*;
import java.math.*;
import java.io.*;
import java.util.*;
public class Main{
    private static Reader br;
    private static Writer ot;
    public static void main (String[] args) throws IOException {
        br = new Reader();
        ot = new Writer();
        int t = 1;//br.nextInt();
        pre();
        while(t-- > 0){
            int n = br.nextInt();
            int m = br.nextInt();
            // int k = br.nextInt();
            solve(n, m);

        }
        ot.close();
    }
    static void solve() throws IOException{

    }
    static void solve(int n) throws IOException{
        
    }
    
    static void solve(int n, int m) throws IOException{
        mod = 998244353l;
        long den = exp(m, n, mod);
        long num = (n * 1l * m) % mod;
        num = (num * (m - 1)) % mod;
        // ot.println(num+" "+den);
        num = (num * exp(den, mod - 2, mod)) % mod;
        ot.println(num);
    }
    
    static List<List<Integer>> adj;
    static long mod = (long)(1e9 + 7);

    static void pre() throws IOException {
        
    }

    // Template Functions
    static long exp(long a, long b, long mod){
        long ans = 1;
        while(b > 0){
            if((b & 1) == 1)
                ans = (ans * a) % mod;
            a = (a * a) % mod;
            b >>= 1;
        }
        return ans;
    }
    static boolean isVowel(char c){
        if(c < 'a')
            c += 32;
        return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u';
    }
    static class DSU{
        int par[], rank[];
        int comp;
        DSU(int n){
            par = new int[n + 1];
            rank = new int[n + 1];
            for(int i = 1; i <= n; i++)
                par[i] = i;
            comp = n;
        }
        void reset(){
            int n = par.length - 1;
            for(int i = 1; i <= n; i++)
                par[i] = 1;
            Arrays.fill(rank, 0);
            comp = n;
        }
        int find(int node){
            if(par[node] == node)
                return node;
            return par[node] = find(par[node]);
        }
        boolean union(int u, int v){
            u = find(u);
            v = find(v);
            if(u == v)
                return false;
            if(rank[u] > rank[v])
                par[v] = u;
            else if(par[v] > rank[u])
                par[u] = v;
            else{
                par[u] = v;
                rank[v]++;
            }
            comp--;
            return true;
        }
    }
}
class Reader {
    private final java.io.InputStream in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;

    private static final long LONG_MAX_TENTHS = 922337203685477580L;
    private static final int LONG_MAX_LAST_DIGIT = 7;
    private static final int LONG_MIN_LAST_DIGIT = 8;

    public Reader(java.io.InputStream in){
        this.in = in;
    }
    public Reader(java.io.File file) throws java.io.FileNotFoundException {
        this(new java.io.BufferedInputStream(new java.io.FileInputStream(file)));
    }
    public Reader(){
        this(System.in);
    }
 
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (java.io.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 readLine() {
        if (!hasNext()) throw new java.util.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 java.util.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') {
                int digit = b - '0';
                if (n >= LONG_MAX_TENTHS) {
                    if (n == LONG_MAX_TENTHS) {
                        if (minus) {
                            if (digit <= LONG_MIN_LAST_DIGIT) {
                                n = -n * 10 - digit;
                                b = readByte();
                                if (!isPrintableChar(b)) {
                                    return n;
                                } else if (b < '0' || '9' < b) {
                                    throw new NumberFormatException(
                                       
                                    );
                                }
                            }
                        } else {
                            if (digit <= LONG_MAX_LAST_DIGIT) {
                                n = n * 10 + digit;
                                b = readByte();
                                if (!isPrintableChar(b)) {
                                    return n;
                                } else if (b < '0' || '9' < b) {
                                    throw new NumberFormatException(
                                       
                                    );
                                }
                            }
                        }
                    }
                    throw new ArithmeticException(
                        String.format("%s%d%d... overflows long.", minus ? "-" : "", n, digit)
                    );
                }
                n = n * 10 + digit;
            }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(readLine());
    }
 
    public long[] nextLongArray(int length){
        long[] array = new long[length];
        for(int i=0; i<length; i++) array[i] = this.nextLong();
        return array;
    }
    public long[] nextLongArray(int length, java.util.function.LongUnaryOperator map){
        long[] array = new long[length];
        for(int i=0; i<length; i++) array[i] = map.applyAsLong(this.nextLong());
        return array;
    }
    public int[] nextIntArray(int length){
        int[] array = new int[length];
        for(int i=0; i<length; i++) array[i] = this.nextInt();
        return array;
    }
    public int[] nextIntArray(int length, java.util.function.IntUnaryOperator map){
        int[] array = new int[length];
        for(int i=0; i<length; i++) array[i] = map.applyAsInt(this.nextInt());
        return array;
    }
    public double[] nextDoubleArray(int length){
        double[] array = new double[length];
        for(int i=0; i<length; i++) array[i] = this.nextDouble();
        return array;
    }
    public double[] nextDoubleArray(int length, java.util.function.DoubleUnaryOperator map){
        double[] array = new double[length];
        for(int i=0; i<length; i++) array[i] = map.applyAsDouble(this.nextDouble());
        return array;
    }
 
    public long[][] nextLongMatrix(int height, int width){
        long[][] mat = new long[height][width];
        for(int h=0; h<height; h++) for(int w=0; w<width; w++){
            mat[h][w] = this.nextLong();
        }
        return mat;
    }
    public int[][] nextIntMatrix(int height, int width){
        int[][] mat = new int[height][width];
        for(int h=0; h<height; h++) for(int w=0; w<width; w++){
            mat[h][w] = this.nextInt();
        }
        return mat;
    }
    public double[][] nextDoubleMatrix(int height, int width){
        double[][] mat = new double[height][width];
        for(int h=0; h<height; h++) for(int w=0; w<width; w++){
            mat[h][w] = this.nextDouble();
        }
        return mat;
    }
 
    public char[][] nextCharMatrix(int height, int width){
        char[][] mat = new char[height][width];
        for(int h=0; h<height; h++){
            String s = this.readLine();
            for(int w=0; w<width; w++){
                mat[h][w] = s.charAt(w);
            }
        }
        return mat;
    }
}
class Writer extends java.io.PrintWriter{
    public Writer(java.io.PrintStream stream){
        super(stream);
    }
    public Writer(java.io.File file) throws java.io.FileNotFoundException{
        super(new java.io.PrintStream(file));
    }
    public Writer(){
        super(System.out);
    }
    
    private static String dtos(double x, int n) {
        StringBuilder sb = new StringBuilder();
        if(x < 0){
            sb.append('-');
            x = -x;
        }
        x += Math.pow(10, -n)/2;
        sb.append((long)x);
        sb.append(".");
        x -= (long)x;
        for(int i = 0;i < n;i++){
            x *= 10;
            sb.append((int)x);
            x -= (int)x;
        }
        return sb.toString();
    }

    @Override
    public void print(float f){
        super.print(dtos(f, 20));
    }
    @Override
    public void println(float f){
        super.println(dtos(f, 20));
    }
    @Override
    public void print(double d){
        super.print(dtos(d, 20));
    }
    @Override
    public void println(double d){
        super.println(dtos(d, 20));
    }
    
    public void printArray(int[] array, String separator){
        int n = array.length;
        if(n==0){
            super.println();
            return;
        }
        for(int i=0; i<n-1; i++){
            super.print(array[i]);
            super.print(separator);
        }
        super.println(array[n-1]);
    }
    public void printArray(int[] array){
        this.printArray(array, " ");
    }
    public void printArray(int[] array, String separator, java.util.function.IntUnaryOperator map){
        int n = array.length;
        if(n==0){
            super.println();
            return;
        }
        for(int i=0; i<n-1; i++){
            super.print(map.applyAsInt(array[i]));
            super.print(separator);
        }
        super.println(map.applyAsInt(array[n-1]));
    }
    public void printArray(int[] array, java.util.function.IntUnaryOperator map){
        this.printArray(array, " ", map);
    }

    public void printArray(long[] array, String separator){
        int n = array.length;
        if(n==0){
            super.println();
            return;
        }
        for(int i=0; i<n-1; i++){
            super.print(array[i]);
            super.print(separator);
        }
        super.println(array[n-1]);
    }
    public void printArray(long[] array){
        this.printArray(array, " ");
    }
    public void printArray(long[] array, String separator, java.util.function.LongUnaryOperator map){
        int n = array.length;
        if(n==0){
            super.println();
            return;
        }
        for(int i=0; i<n-1; i++){
            super.print(map.applyAsLong(array[i]));
            super.print(separator);
        }
        super.println(map.applyAsLong(array[n-1]));
    }
    public void printArray(long[] array, java.util.function.LongUnaryOperator map){
        this.printArray(array, " ", map);
    }
    public <T> void printArray(T[] array, String separator){
        int n = array.length;
        if(n==0){
            super.println();
            return;
        }
        for(int i=0; i<n-1; i++){
            super.print(array[i]);
            super.print(separator);
        }
        super.println(array[n-1]);
    }
    public <T> void printArray(T[] array){
        this.printArray(array, " ");
    }
    public <T> void printArray(T[] array, String separator, java.util.function.UnaryOperator<T> map){
        int n = array.length;
        if(n==0){
            super.println();
            return;
        }
        for(int i=0; i<n-1; i++){
            super.print(map.apply(array[i]));
            super.print(separator);
        }
        super.println(map.apply(array[n-1]));
    }
    public <T> void printArray(T[] array, java.util.function.UnaryOperator<T> map){
        this.printArray(array, " ", map);
    }
}