Submission #71170676

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Source Code Expand

#include<bits/stdc++.h>
const int N = 1e6 + 10;
using namespace std;
map<int,int>mp[15];
int Get_digit(int x){
	if(x<=9)return 1;
	return Get_digit(x/10)+1;
}
int A[M];
int main(){
	int n,m;
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n;i++)scanf("%d",&A[i]);
	long long ans=0;
	for(int i=1;i<=n;i++)mp[Get_digit(A[i])][A[i]%m]++; 
	for(int i=1;i<=n;i++){
		int x=A[i];
		int d=x%m;
		for(int j=1;j<=10;j++){
			d=10ll*d%m;
			ans+=mp[j][(m-d)%m];
		}
	}
	printf("%lld\n",ans);
	
	return 0;
}

Submission Info

Compile Error

./Main.cpp:9:7: error: 'M' was not declared in this scope
    9 | int A[M];
      |       ^
./Main.cpp: In function 'int main()':
./Main.cpp:13:42: error: 'A' was not declared in this scope
   13 |         for(int i=1;i<=n;i++)scanf("%d",&A[i]);
      |                                          ^
./Main.cpp:15:43: error: 'A' was not declared in this scope
   15 |         for(int i=1;i<=n;i++)mp[Get_digit(A[i])][A[i]%m]++;
      |                                           ^
./Main.cpp:17:23: error: 'A' was not declared in this scope
   17 |                 int x=A[i];
      |                       ^