#include<stdio.h> #include<math.h> #include<string.h> //#include<algorithm> #include <bits/stdc++.h> using namespace std; int main() { int T; scanf("%d",&T); int k=1; while(T--) { string A,B; cin>>A; cin>>B; int panduan=0; if(A.length()<B.length()) { while(A.length()<B.length()) { A="0"+A; } panduan=0; } else if(A.length()>B.length()) { while(A.length()>B.length()) { B="0"+B; } panduan=1; } else { int z=0; while(A[z]==B[z]) { z++; } if(A[z]>B[z]) { panduan=0; } else { panduan=1; } } int numA[101]; int numB[101]; for(int i=0; i<A.length(); i++) { numA[i]=A[i]-'0'; numB[i]=B[i]-'0'; } if(panduan==0) { for(int i=0; i<A.length(); i++) { if(i!=0) { if(numA[i]<numB[i]) { numA[i]=numA[i]+10-numB[i]; numA[i-1]--; } else { numA[i]=numA[i]-numB[i]; } } else { numA[i]=numA[i]-numB[i]; } } } else { for(int i=0; i<A.length(); i++) { if(i!=0) { if(numB[i]<numA[i]) { numB[i]=numB[i]+10-numA[i]; numB[i-1]--; } else { numB[i]=numB[i]-numA[i]; } } else { numB[i]=numB[i]-numA[i]; } } } printf("Case #%d:\n",k); if(panduan==1) { printf("-"); } for(int i=0; i<A.length(); i++) { printf("%d",numA[i]); } printf("\n"); k++; } } |
Double click to view unformatted code.