10035 - Primary Arithmetic

[rahat khan]

#include<stdio.h>
#include<math.h>
int main()
{
int a,b,c[10],d[10],i,j,x,y,m;
while(1)
{
m=0;
scanf("%d %d",&a,&b);
if(a==0&&b==0)
break;
x=log10(a)+1;
y=log10(b)+1;
for(i=0;i<x;i++)
{
c=a%10;
a=a/10;
}
for(j=0;j<y;j++)
{
d[j]=b%10;
b=b/10;
}
if(x<=y)
{
for(i=0;i<x;i++)
{
if(c+d>9)
{
m=m+1;
}
}
}
if(x>y)
{
for(j=0;j<y;j++)
{
if(c[j]+d[j]>9)
{
m=m+1;
}
}
}
if(m==0)
printf("No carry operation.\n");
else if(m==1)
printf("%d carry operation.\n",m);
else
printf("%d carry operations.\n",m);
}
return 0;
}

[SS_HASAN]

#include<stdio.h>

int main()
{
long long m, n;
int sum, count, carry;


while(scanf("%I64d %I64d",&m,&n))
{
if(!m && !n) break;

count = 0;
sum = 0;
carry = 0;

for( ; m != 0 || n != 0; m /= 10, n /= 10)
{
sum = (m % 10) + (n % 10) + carry;

carry = 0;

if(sum > 9)
{
carry = 1;
count++;
}
}

if(count == 0)
printf("No carry operation.\n");

else if(count == 1)
printf("%d carry operation.\n",count);

else
printf("%d carry operations.\n",count);
}
return 0;
}

//Please help me with this code..i'm getting WA..:'(

[ravingeek]

i can't find why the system refuse my code
i can't find where is the mistake
can you help me please?

here is my code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SIZE 10
void sum(char x[SIZE],long *sum) {
int i;
for(i=0; i<SIZE; i++)
*sum+=x;
}
int main() {
char x[SIZE], y[SIZE],test[SIZE];
long z[SIZE],i,carry,sum0,sum1;
memset(test,'0', sizeof(char)*SIZE);
while(1) {
memset(x,'0', sizeof(char)*SIZE);
memset(y,'0', sizeof(char)*SIZE);
memset(z, 0, sizeof(long)*SIZE);
carry=0,sum0=0,sum1=0;
memset(z, 0, sizeof(int)*SIZE);
scanf("%s %s",x,y);
sum(x,&sum0);
sum(y,&sum1);
if(sum0==432 && sum1==432)
break;
for(i=0; i<SIZE; i++) {
z=(x+y)-96;
if (z>=SIZE)
carry++;
}
if(x[0]=='-'||y[0]=='-')
carry=0;
memset(z,0,SIZE);
if(carry==0)
printf("No carry operation.\n");
else if(carry==1)
printf("1 carry operation.\n");
else
printf("%ld carry operations.\n",carry);
carry=0;
memset(z, 0, sizeof(int)*SIZE);
}
return 0;
}


thanks in advance

[The_Madman]

i can't find why the system refuse my code

What do you mean by refuse ? Can you please tell the exact verdict?

i can't find where is the mistake

Your code seems to compile correctly but gives incorrect output. Did you run your program on the inputs given in the previous posts?

Code: Select all

for(i=0; i<SIZE; i++) {
            z[i]=(x[i]+y[i])-96;
            if (z[i]>=SIZE) carry++;
        }

In ASCII 96 stands for E. So what are you trying to do actually? Remember, if adding two digits is < 10, you may have a carry which makes it 10. Hope it helps.

[The_Madman]

UVA do not give any verdict for the code below. It only says,

Your submission with number ******* for the problem 10035 - Primary Arithmetic has failed with verdict .

Verdict what? Where is the problem?
Code accepted and removed. I feel stupid. The problem does explicitly specify less than 10 digits. While it certainly has input cases > 10 digits. Since, I've just made my arrays length 40 and it got accepted. This is unexpected. Can anyone report this to the right authority?

[Ahmad]

for anyone keep getting WA
just take care of the 'S' in case the output is greater than or equal to 1
and try this case:
Input:

Code: Select all

999743 859

Output:

Code: Select all

6 carry operations.

Ahmad

[rahat khan]

#include<stdio.h>
int main()
{
long long a,b,c,m[100],n[100],x,y,i,e;
while(scanf("%lld %lld",&x,&y))
{
if(x==0&&y==0)
break;
c=0;
if(a<b)
{
a=y;
b=x;
}
else
{
a=x;
b=y;
}
e=0;
for(i=1;;i++)
{
m=a%10;
m=m+e;
a=a/10;
n=b%10;
b=b/10;
if((m+n)>9)
{
c++;
e++;
}
else
e=0;
if(a==0)
break;
}
if(c==0)
printf("No carry operation.\n");
else
printf("%lld carry operations.\n",c);
}
return 0;
}

[expecto_petronum]

I am getting wrong answer. I can't found any problems. Can any one help me?

Code: Select all

#include<iostream>
using namespace std;

int main()
{
	long long unsigned num1,num2,rem1,rem2,q1,q2;
	int carry,p_carry;
	//scanf("%u%u",&num1,&num2);
	cin>>num1>>num2;
	while(num1!=0 && num2!=0)
	{
		q1=num1;
		q2=num2;
		carry=0;
		p_carry=0;
		
		while(q1>0 || q2>0)
		{
			rem1=q1%10;
			rem2=q2%10;
			q1=q1/10;
			q2=q2/10;
			
			if(p_carry==1)
			{
				p_carry=0;
				if(rem1+rem2>8)
				{
					carry++;
					p_carry=1;
				}
			}
			else
			{
				if(rem1+rem2>9)
				{
					carry++;
					p_carry=1;
				}
			}


		}
		if(carry==0)
			cout<<"No carry operation.\n";

		if(carry>1)
			cout<<carry<< " carry operations.\n";
			//printf("%d carry operations.\n",carry);
		if(carry==1)
			cout<<"1 carry operation.\n";

		//scanf("%d%d",&num1,&num2);
		cin>>num1>>num2;
		

	}
	return 0;
}

[artless]

#include<stdio.h>
int main()
{
int a,b,count,carry,sum;
while(scanf("%d %d",&a,&b)==2&&(a||b!=0))
{count=0;carry=0;sum=0;
while(a>0||b>0)
{ sum=(a%10)+(b%10)+carry;
if(sum>=10) count+=1;
carry=((a%10)+(b%10)+carry)/10;
a=a/10;b=b/10;
}
if(count==0) printf("No carry operation.\n");
else if(count>0) printf("%d carry operation.\n",count);
}
return 0;
}

[brianfry713]

Do a diff against the sample output.

if(count==0) printf("No carry operation.\n");
else if(count==1) printf("1 carry operation.\n");
else printf("%d carry operations.\n",count);

[ahsanalishahid]

I have tried every possible test case i think of but judge is giving me wrong answer. Here is the code. Help me if I am wrong.

Code: Select all

#include <iostream>
#include <vector>
#include <string>
#include <cstdio>
#include <sstream>
#include <cstdlib>
using namespace std;

int main()
{

	string number1 = "";
	string number2 = "";
	int sum = 0;
	int n1 = 0, n2 = 0;
	char c1 = 'n', c2 = 'n';
	stringstream ss("");
	string temp = "", answer = "";
	int carry = 0;
	int counter =0;
	while( cin >> number1 >> number2 )
	{
		//ss.clear();
		if(number1 == "0" && number2 == "0")			
		{
			break;
		 }
		//if (number1 != "0" || number2 != "0") break;
		
			if(number1.length() > number2.length() )
			{
			
				while( number2.length() != number1.length() )
				{
					number2 = "0" + number2; 
				}
			
			}
			else if(number2.length() > number1.length() )
			{
				while( number1.length() != number2.length() )
				{
					number1 = "0" + number1; 

				}

			}
			while(answer.length() != number1.length() )	answer += "0";



		//if(number1.length() < 10)	
			for(int j=answer.length()-1;j>=0;j--)
			{
				//cout << '2' << endl;
				c1 = number1[j];
				n1 = atoi(&c1);
				//cout << number2 <<endl;
				c2 = number2[j];
				//cout << "ccc" << endl;
				n2 = atoi(&c2);
				sum = n2 + n1 + carry;
				if(sum > 9)
				{
					int lastnum = sum / 10;
					int remainder = sum %10;
					carry = lastnum;
					counter++;
					//cout << "carry " << carry << endl;;
					ss << remainder; ss >> temp;
				
					answer[j] = temp[0];
					temp.clear();
					ss.clear();
				}
				else
				{
					
					ss << sum;
					ss >> temp;
					answer[j] = temp[0];
					temp.clear();
					ss.clear();
					carry = 0;
				}
				
				if( j == 0 && carry !=  0)
				{
					

					ss << carry;
					ss >> temp;

					answer = temp[0] + answer;
					carry =0;
			
					temp.erase();
					ss.clear();

					//j++;
				}
				
			}

			if(counter == 0  )
			{
				if(number1 != "0" || number2 != "0")
				{
					cout << "No carry operation." << endl;
				}
			}
			else if(counter== 1)
			{
					cout << counter << " carry operation." << endl;
		
			}
			else
			{
				cout << counter << " carry operations." << endl;
			}
			counter = 0;

		number1.erase();
		number2.erase();
		answer.erase();


	}
	
	cin.get();
	cin.get();
	return 0;

}

I have tried all test cases that I have found on this board and its answer is correct but I am getting WA. I am freaking out :/ kindly help me.

Regards.

[brianfry713]

ahsanalishahid, the code you posted is not correct for the sample I/O.

[ahsanalishahid]

@brianfry, can u please point out what am I doing wrong as I am still unable to figure out.

[brianfry713]

For the first input 123 456, right after you execute "sum = n2 + n1 + carry", here's what's in your variables:
n1=3 n2=63
n1=2 n2=52
n1=14 n2=414

I wouldn't recommend calling atoi on a single char.

[ahsanalishahid]

@brianfry . THanks man! i used stringstream instead and it worked Thanks again