11716 - Digital Fortress

[brianfry713]

Try using BufferedReader and BufferedWriter.

[alexiago]

Using BufferedReader/BufferedWriter made a difference. Thank you brianfry713

[uDebug]

brianfry713, neilor,

Thanks for the test cases.

[rasha7695]

why WA??
#include<iostream>
#include<string>
#include<cmath>
using namespace std;
int main(){
int t;
cin>>t;
string s;
for(int p=0;p<=t;p++){
getline(cin,s);
double b=sqrt(s.length());
int c=floor(b);
char a[c][c];
if(b-floor(b)!=0)
cout<<"INVALID"<<endl;
else
{
int k=0;
for(int i=0;i<b;i++){
for(int j=0;j<b;j++){
a[j]=s[k];
k++;
}
}
for(int i=0;i<b;i++){
for(int j=0;j<b;j++){
cout<<a[j];
}
}
cout<<endl;
}
}
}

[lighted]

_

[lighted]

Use code tags. After reading first number, you must read newline char at that line. If you don't, first getline command will read empty string. Your for operator must run only t times.

Add one getline to read newline char and make for loop run only t times.

Code: Select all

cin >> t;

string s;

getline(cin,s);

for (int p = 0; p < t; p++) {
   getline(cin,s);

Don't forget to remove your code after getting accepted.

[mjimaz]

I keep getting WA.

REMOVED after AC

Issue: Comparing floating point numbers!

[lighted]

Always try to avoid floating point. It is not correct to compare doubles. Change code to

Code: Select all

int i, j, x, sq;
double length;
..
length = strlen(word);
sq = sqrt(length);

[mjimaz]

Thanks lighted!

[ashikulhaque]

Code: Select all

#include<stdio.h>
#include<string.h>
#include<math.h>

int main()
{
    char str[1000000];
    int i,t,l,j,c,k,sq;
    float s;
    scanf("%d",&t);
    scanf("\r");
    for(i=1;i<=t;i++){
        if(i!=1)
            printf("\n");
        gets(str);
        l=strlen(str);
        s=sqrt(l);
        sq=sqrt(l);
        if(s!=sq)
            printf("INVALID");
        else{
            char ans[l];
            c=0;
            k=0;
            while(c<s){
                for(j=c;j<l;k++){
                    printf("%c",str[j]);
                    j+=s;
                }
                c+=1;
            }
        }
    }
    return 0;
}

getting WA but can't find the problem.All test cases also works.