标签:void and row src input c++ targe span first
思路:
代码如下:
#include <iostream> #include <algorithm> #include <cstring> #include <cstdio> using namespace std; int a[100005]; char s[100005]; void cal(int &a3, int &E1,int &E2,int N) { a3=0; E1=0; E2=0; for(int i=1;i<=N;i++) { if(a[i]==3) break; if(a[i]==0) a3++; } for(int i=1;i<=N;i++) { if(a[i]==0) break; if(a[i]==1) E1=1; if(a[i]==2) E2=1; } return ; } int main() { int T; cin>>T; while(T--) { int N,K; int s1=0,s2=0,s3=0; scanf("%d%d",&N,&K); scanf("%s",s+1); for(int i=1;i<=N;i++) { a[i]=s[i]-‘0‘; if(a[i]%3==1) a[i]=1,s1++; else if(a[i]%3==2) a[i]=2,s2++; else s3++,a[i]=(a[i])?3:0; } int ans=(s1+s2*2)%3; int a3,E1,E2,f=0; cal(a3,E1,E2,N); for(int C=0;C<=s2&&C<=K;C++) ///C->2; B->1; A->0; { int B=((ans-C*2)%3+3)%3; for(;B<=s1&&C+B<=K;B=B+3) { int A=K-C-B; if(A<=s3) { if(A>a3) f=1; else if(B<s1&&E1) f=1; else if(C<s2&&E2) f=1; if(f) break; } } if(f) break; } if((N==K+1)&&s3) f=1; if(f) puts("yes"); else puts("no"); } return 0; }
标签:void and row src input c++ targe span first
原文地址:http://www.cnblogs.com/chen9510/p/6660335.html