marcha4 my algo is correct but still wa

general
1

#include
#include<stdio.h>
#include
#include
using namespace std;
typedef long long int ll;
ll power(ll x, ll e)
{
ll res;

  if (e == 0)
  {
    res = 1;
  }
  else if (e == 1)
  {
    res = x;
  }
  else
  {
    res = power(x, (e / 2));
    res = res * res;
    if ((e) % 2)
      res = res * x;
  }
  //cout<<"res4=\n"<<res;
  return res;
}

int main()
{
ll t;
scanf("%lld",&t);
while(t--)
     {
      ll n=0,m,o;
      int k=0;
      scanf("%lld%d",&n,&k);
      ll res=power(n,n);
      cout.precision(k);
      long double intpart;
      ll a=0,b=0;
      int p=0,c=0;
      p=power(10,k);//cout<<"p="<<p<<endl;
      o=power(n,n);m=o;
      int last=0;
      last=o%p;
      int first=floor( pow( 10.0, modf( n * log10((double)n), &intpart ) + k - 1 ) );
     printf("%d %d",first,last);
     if(last==0)
    { k=k-1;
     while(k--)
     printf("%d",0);}
     printf("\n");
     }
return 0;
}
2

Hello,

Below I tried to format your code to something readable (I am not allowed to edit your question).

If you look at the problem limits, you will see that N is at most 10^9. Think about how large 10^9^(10^9) is. A ‘long long’ is at most 2^63-1 (about 18 digits).

The result of N^N will not fit in a ‘long long’. Try to find another solution…


include <iostream>
include <stdio.h>
include <cmath>
include <cstdio>
using namespace std;

typedef long long int ll;

ll power(ll x, ll e)
{
  ll res;
  if (e == 0)
  {
    res = 1;
  }
  else if (e == 1)
  { res = x; }
  else
  {
    res = power(x, (e / 2));
    res = res * res;
    if ((e) % 2) res = res * x;
  }
  //cout<<"res4=\n"<<res;
  return res;
}

int main()
{
  ll t;
  scanf("%lld",&t);
  while(t--)
  {
    ll n=0,m,o;
    int k=0;
    scanf("%lld%d",&n,&k);
    ll res=power(n,n);
    cout.precision(k);
    long double intpart;
    ll a=0,b=0;
    int p=0,c=0; p=power(10,k);
    //cout<<"p="<<p<<endl;
    o=power(n,n);
    m=o;
    int last=0;
    last=o%p;
    int first=floor( pow( 10.0, modf( n * log10((double)n), &intpart ) + k - 1 ) );
    printf("%d %d",first,last);
    if(last==0)
    {
      k=k-1;
      while(k--)
        printf("%d",0);
    }
    printf("\n");
  }
  return 0;
}