結果
| 問題 |
No.193 筒の数式
|
| コンテスト | |
| ユーザー |
fujisu
|
| 提出日時 | 2015-04-26 22:26:44 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 61 ms / 1,000 ms |
| コード長 | 3,634 bytes |
| コンパイル時間 | 2,344 ms |
| コンパイル使用メモリ | 80,356 KB |
| 実行使用メモリ | 50,476 KB |
| 最終ジャッジ日時 | 2024-07-05 02:59:55 |
| 合計ジャッジ時間 | 4,163 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 16 |
ソースコード
import java.io.IOException;
import java.util.InputMismatchException;
public class Main {
char[] c;
int id;
long expression() {
long res = term();
while (c[id] == '+' || c[id] == '-') {
if (c[id] == '+') {
id++;
res += term();
} else {
id++;
res -= term();
}
}
return res;
}
long term() {
long res = fact();
while (c[id] == '*' || c[id] == '/') {
if (c[id] == '*') {
id++;
res *= fact();
} else {
id++;
res /= fact();
}
}
return res;
}
long fact() {
long res = 0;
if (c[id] == '(') {
id++;
res = expression();
id++;
} else if (c[id] == '+') {
id++;
res = fact();
} else if (c[id] == '-') {
id++;
res = -fact();
} else {
res = number();
}
return res;
}
long number() {
long res = 0;
while ('0' <= c[id] && c[id] <= '9') {
res *= 10;
res += c[id] - '0';
id++;
}
return res;
}
void run() {
MyScanner sc = new MyScanner();
StringBuilder s = new StringBuilder(sc.next());
int n = s.length();
long max = Long.MIN_VALUE;
for (int i = 0; i < n; i++) {
c = (s.toString() + "=").toCharArray();
if (c[0] < '0' || '9' < c[0]) {
s = new StringBuilder("").append(s.charAt(s.length() - 1)).append(s.substring(0, s.length() - 1));
continue;
}
if (c[c.length - 2] < '0' || '9' < c[c.length - 2]) {
s = new StringBuilder("").append(s.charAt(s.length() - 1)).append(s.substring(0, s.length() - 1));
continue;
}
id = 0;
long tmp = expression();
max = Math.max(max, tmp);
s = new StringBuilder("").append(s.charAt(s.length() - 1)).append(s.substring(0, s.length() - 1));
}
System.out.println(max);
}
public static void main(String[] args) {
new Main().run();
}
public void mapDebug(int[][] a) {
System.out.println("--------map display---------");
for (int i = 0; i < a.length; i++) {
for (int j = 0; j < a[i].length; j++) {
System.out.printf("%3d ", a[i][j]);
}
System.out.println();
}
System.out.println("----------------------------" + '\n');
}
class MyScanner {
int read() {
try {
return System.in.read();
} catch (IOException e) {
throw new InputMismatchException();
}
}
boolean isSpaceChar(int c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
boolean isEndline(int c) {
return c == '\n' || c == '\r' || c == -1;
}
int nextInt() {
return Integer.parseInt(next());
}
int[] nextIntArray(int n) {
int[] array = new int[n];
for (int i = 0; i < n; i++)
array[i] = nextInt();
return array;
}
long nextLong() {
return Long.parseLong(next());
}
long[] nextLongArray(int n) {
long[] array = new long[n];
for (int i = 0; i < n; i++)
array[i] = nextLong();
return array;
}
double nextDouble() {
return Double.parseDouble(next());
}
double[] nextDoubleArray(int n) {
double[] array = new double[n];
for (int i = 0; i < n; i++)
array[i] = nextDouble();
return array;
}
String next() {
int c = read();
while (isSpaceChar(c))
c = read();
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isSpaceChar(c));
return res.toString();
}
String[] nextStringArray(int n) {
String[] array = new String[n];
for (int i = 0; i < n; i++)
array[i] = next();
return array;
}
String nextLine() {
int c = read();
while (isEndline(c))
c = read();
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isEndline(c));
return res.toString();
}
}
}
fujisu