} #include <iostream> using namespace std; int main() { int A,B,N; cin>>A>>B ; N=A+B+1 ; int Y; string X[N] ; for(int i=1 ;i<=N ;i++){ cin>>X[i] ; if(X[i]=="-"){ Y=i ; } } int Flag=1 ; for(int i=1 ;i<=N ;i++){ if(i==Y){ continue ; } if(X[i]<"0" ||X[i]>"9"){ Flag=0 ; break ; } } if(Flag==1 &&Y==A+1){ cout<<"Yes"<<endl; } else{ cout<<"No"<<endl; } return 0; }
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