HDU 2141 Can you find it?
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Can you find it?
Time Limit: 10000/3000 MS (Java/Others) Memory Limit: 32768/10000 K (Java/Others)
Problem Description
Give you three sequences of numbers A, B, C, then we give you a number X. Now you need to calculate if you can find the three numbers Ai, Bj, Ck, which satisfy the formula Ai+Bj+Ck = X.
Input
There are many cases. Every data case is described as followed: In the first line there are three integers L, N, M, in the second line there are L integers represent the sequence A, in the third line there are N integers represent the sequences B, in the forth line there are M integers represent the sequence C. In the fifth line there is an integer S represents there are S integers X to be calculated. 1<=L, N, M<=500, 1<=S<=1000. all the integers are 32-integers.
Output
For each case, firstly you have to print the case number as the form "Case d:", then for the S queries, you calculate if the formula can be satisfied or not. If satisfied, you print "YES", otherwise print "NO".
Sample Input
3 3 31 2 31 2 31 2 331410
Sample Output
Case 1:NOYESNO
#include <set>#include <map>#include <stack>#include <cmath>#include <queue>#include <cstdio>#include <bitset>#include <string>#include <vector>#include <iomanip>#include <cstring>#include <iostream>#include <algorithm>#include <functional>#define maxn 1000010using namespace std;int ab[250005];int main(){ int l,n,m,s,counter=0; int a[505],b[505],c[505]; while(scanf("%d %d %d",&l,&n,&m)!=EOF) { counter++; for(int i=0;i<l;i++) { scanf("%d",&a[i]); } for(int i=0;i<n;i++) { scanf("%d",&b[i]); } for(int i=0;i<m;i++) { scanf("%d",&c[i]); } int k=0; for(int i=0;i<l;i++) { for(int j=0;j<n;j++) { ab[k++]=a[i]+b[j]; } } sort(ab,ab+l*m); scanf("%d",&s); printf("Case %d:\n",counter); while(s--) { int num; scanf("%d",&num); int flag=0; for(int i=0;i<m;i++) { int need=num-c[i]; int left=0,right=l*n-1; while(left<=right) { int mid=(left+right)/2; if(ab[mid]>need) { right=mid-1; } else if(ab[mid]<need) { left=mid+1; } else { flag=1; break; } } if(flag==1) { printf("YES\n"); break; } } if(flag==0) { printf("NO\n"); } } } return 0;}
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