Moderator: Board moderators
Code: Select all
#include <iostream>
#include <string>
#include <sstream>
/* #include <climits> */
#define INT_MAX 2147483647
using namespace std;
template <class T>
string int2string(T number) {
stringstream stream;
stream << number;
return stream.str();
}
int string2int(string number) {
stringstream stream;
stream << number;
int inumber;
stream >> inumber;
return inumber;
}
bool bigger(string num, string ref) {
if (num.length() > ref.length())
return true;
if (num.length() < ref.length())
return false;
for (int i = 0; i < num.length(); ++i) {
if (num[i] > ref[i])
return true;
}
return false;
}
void lstrip(string& number) {
string::size_type pos = number.find_first_not_of("0", 0);
if (pos > 0)
number.erase(0, pos);
if (number == "")
number = "0";
}
int main() {
string max = int2string(INT_MAX);
string line;
while (getline(cin, line)) {
stringstream stream(line);
string num1, op, num2;
if (not (stream >> num1 >> op >> num2))
continue;
lstrip(num1);
lstrip(num2);
bool fail = false;
cout << line << endl;
if (bigger(num1, max)) {
cout << "first number too big" << endl;
fail = not (op[0] == '*' and num2 == "0");
}
if (bigger(num2, max)) {
cout << "second number too big" << endl;
fail = not (op[0] == '*' and num1 == "0");
}
if (not fail) {
if (op[0] == '+') {
unsigned int result = string2int(num1) + string2int(num2);
fail = bigger(int2string(result), max);
} else if (op[0] == '*' and num1 != "0" and num2 != "0") {
int n1 = string2int(num1);
int n2 = string2int(num2);
fail = ((n1 * n2) / n2) != n1;
}
}
if (fail) {
cout << "result too big" << endl;
}
}
}
Code: Select all
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String line[];
double a, b;
try {
while ((line = in.readLine().split(" ")) != null) {
a = Double.parseDouble(line[0]);
b = Double.parseDouble(line[2]);
System.out.println(line[0] + " " + line[1] + " " + line[2]);
if (a > (double) Integer.MAX_VALUE) {
System.out.println("first number too big");
}
if (b > (double) Integer.MAX_VALUE) {
System.out.println("second number too big");
}
if (line[1].equals("+")) {
if ((a + b) > (double) Integer.MAX_VALUE)
System.out.println("result too big");
} else if (line[1].equals("*")) {
if ((a * b) > (double) Integer.MAX_VALUE)
System.out.println("result too big");
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
Code: Select all
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
public class Main {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String line [];
BigInteger maxInt = new BigInteger(Integer.toString(Integer.MAX_VALUE));
try {
while((line = in.readLine().split(" ")) != null){
BigInteger intA = new BigInteger(line[0]);
BigInteger intB = new BigInteger(line[2]);
System.out.println(line[0]+" "+line[1]+" "+line[2]);
if(intA.compareTo(maxInt)==1){
System.out.println("first number too big");
}
if(intB.compareTo(maxInt)==1){
System.out.println("second number too big");
}
if(line[1].equals("+")){
if((intA.add(intB)).compareTo(maxInt)==1)
System.out.println("result too big");
}
else if(line[1].equals("*")){
if((intA.multiply(intB)).compareTo(maxInt)==1)
System.out.println("result too big");
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}