C++50分求助

#include<bits/stdc++.h>
using namespace std;
int nums(int a,int b,int c,int d,int e,int f,int g,int h,int i){
	int num=a*1+b*2+c*3+d*4+e*5+f*6+g*7+h*8+i*9;
	num=num%11;
	return num;
}
int main(){
	int a,b,c,d,b1[3],c1[5],num;
	scanf("%d-%d-%d-%d",&a,&b,&c,&d);
	b1[0]=b/100;b1[1]=(b/10)%10;b1[2]=b%10;
	c1[0]=c/10000;c1[1]=(c/1000)%10;c1[2]=(c/100)%10;c1[3]=(c/10)%10;c1[4]=c%10;
	//cout<<a<<endl<<b<<endl<<b1[0]<<endl<<b1[1]<<endl<<b1[2]<<endl<<c<<endl<<c1[0]<<endl<<c1[1]<<endl<<c1[2]<<endl<<c1[3]<<endl<<c1[4]<<endl<<d<<endl;
	num=nums(a,b1[0],b1[1],b1[2],c1[0],c1[1],c1[2],c1[3],c1[4]);
	if(num==d){
		printf("Right");
	}
	else{
		cout<<a<<'-'<<b<<'-'<<c<<'-'<<num;
	}
	return 0;
}