这么写为什么一个WA

#include<iostream> 
#include<cstring>
#include<cmath>
using namespace std;
int main(){
	int n,nn,p,ct,cnt=0,minn=1000,i_flp,sum;
	cin>>n>>p;
	for(int i=pow(10,n-1);i<pow(10,n);++i){
		i_flp=i;
		sum=0;
		while(i_flp){
			sum+=i_flp%10;
			i_flp/=10;
		}
		if(sum % p==0){
			cout<<i<<endl;
			return 0;
		}
	}
	cout<<1<<endl;
	return 0;
}