# Time limit problem for Alien Chef.

I wrote a program for Alien chef problem today.
The concrete concept of the problem is clear, but I am wondering why I always got time exceeded.
Here are my codes, can anyone help me to solve this problem.

``````#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main()
{
int num_recipes;
long long se[5001][3];
int group_alien;
int k;
long long t,count,temp;
int flag[5]={0};

cin>>num_recipes;
//cout<<"num-recipes:"<<num_recipes<<endl;
for(int i=0;i<num_recipes;i++){
cin>>se[i][0];
cin>>se[i][1];
}
for(int i=0;i<num_recipes;i++){
for(int j =i+1;j<num_recipes;j++){
if(se[i][0]>se[j][0]){
temp = se[i][0];
se[i][0] = se[j][0];
se[j][0] = temp;

temp = se[i][1];
se[i][1] = se[j][1];
se[j][1] = temp;

}
}
}

/*for(int i=0;i<num_recipes;i++){
cout<<se[i][0]<<" "<<se[i][1]<<endl;
}*/

cin>>group_alien;
count =0;
for(int i=0;i<group_alien;i++)
{
cin>>k;
for(int j=0;j<k;j++){
cin>>t;
for(int m=0;m<num_recipes;m++){
if(t >= se[m][0] && t <= se[m][1] && flag[m]==0){
//cout<<"i:"<<i<<" t:"<<t<<" se["<<m<<"][0]:"<<se[m][0]<<" se["<<m<<"][1]:"<<se[m][1]<<endl;
count++;
flag[m] =1;
}
else if( t < se[m][0]) break;
}
}
cout<<count<<endl;
count=0;
for(int n=0;n<num_recipes;n++){
flag[n] =0;
}
}
system("pause");
return 0;
}``````

Try to remove `system("pause")` first

And if there is TLE still, replace `cout` with `printf()` and `cin` with `scanf()`, while cin and cout are slow.

The concrete concept of the problem is clear

I’m not so sure. MAXN is 10^5 and you have inner loop:

``````for(int i=0;i<num_recipes;i++){
for(int j =i+1;j<num_recipes;j++){
...
}
}
``````

Are you sure you want to perform 10^10 operations in 3 seconds?

//