1092. To Buy or Not to Buy (20)时间限制100 ms内存限制65536 kB代码长度限制16000 B判题程序Standard作者CHEN, YueEva would like to make a string of beads with her favorite colors so she went to a small shop to buy some beads. There were many colorful strings of beads. However the owner of the shop would only sell the strings in whole pieces. Hence Eva must check whether a string in the shop contains all the beads she needs. She now comes to you for help: if the answer is "Yes", please tell her the number of extra beads she has to buy; or if the answer is "No", please tell her the number of beads missing from the string.For the sake of simplicity, let’s use the characters in the ranges [0-9], [a-z], and [A-Z] to represent the colors. For example, the 3rd string in Figure 1 is the one that Eva would like to make. Then the 1st string is okay since it contains all the necessary beads with 8 extra ones; yet the 2nd one is not since there is no black bead and one less red bead.Figure 1Input Specification:Each input file contains one test case. Each case gives in two lines the strings of no more than 1000 beads which belong to the shop owner and Eva, respectively.Output Specification:For each test case, print your answer in one line. If the answer is "Yes", then also output the number of extra beads Eva has to buy; or if the answer is "No", then also output the number of beads missing from the string. There must be exactly 1 space between the answer and the number.Sample Input 1:ppRYYGrrYBR2258YrR8RrYSample Output 1:Yes 8Sample Input 2:ppRYYGrrYB225YrR8RrYSample Output 1:
No 2
#include<iostream>#include<cstring>#include<string>#include<cmath>#include<map>#include<queue>#include<cstdio>#include<vector>#include<algorithm>using namespace std;const int maxn=1000005;const int inf=210000;int a[maxn];//shop的哈希表int b[maxn];//eva的哈希表char shop[maxn];char eva[maxn];int main(){scanf("%s%s",shop,eva);int lena=strlen(shop);int lenb=strlen(eva);for(int i=0;i<lena;i++)a[shop[i]]++;for(int i=0;i<lenb;i++)b[eva[i]]++;int ans=0;for(int i=0;i<300;i++)if(b[i]!=0){if(b[i]>a[i])ans+=b[i]-a[i];}if(ans!=0)printf("No %d\n",ans);elseprintf("Yes %d\n",lena-lenb);}
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