結果
| 問題 |
No.49 算数の宿題
|
| コンテスト | |
| ユーザー |
nCk_cv
|
| 提出日時 | 2016-07-22 13:54:55 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 138 ms / 5,000 ms |
| コード長 | 3,260 bytes |
| コンパイル時間 | 2,919 ms |
| コンパイル使用メモリ | 79,024 KB |
| 実行使用メモリ | 41,396 KB |
| 最終ジャッジ日時 | 2024-12-23 01:52:54 |
| 合計ジャッジ時間 | 4,556 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 10 |
ソースコード
import java.awt.geom.Point2D;
import java.io.*;
import java.math.*;
import java.util.*;
import java.util.Map.*;
class Main {
public static void main(String[] args) {
//FastScanner sc = new FastScanner();
Scanner sc = new Scanner(System.in);
String S = sc.next();
String[] ss = S.split("\\*|\\+");
int f = Integer.parseInt(ss[0]);
int id = 0;
for(int i = 0; i < ss.length-1; i++) {
id += ss[i].length();
if(S.charAt(id) == '+') {
f *= Integer.parseInt(ss[i+1]);
}
else {
f += Integer.parseInt(ss[i+1]);
}
id++;
}
System.out.println(f);
}
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;}
private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;}
public boolean hasNext() { skipUnprintable(); 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() {
if (!hasNext()) throw new NoSuchElementException();
int 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();
}
}
}
}
nCk_cv