[string] hdu 4178

 /**

    
 [string] hdu 4178
    
 水题一枚，却wa了良久。本来想用sscanf的%n给水过去，太不如意了。大概是控制不好空格吧。 
    
 */
    
 #include <stdio.h>
    
 #include <string.h>
    
 int main()
    
 {
    
 	char inf[50],ans[5];
    
 	int t,n,cnt,cas = 0,f,i,j,y[5];
    
 	scanf("%d",&t);
    
 	while(t--)
    
 	{
    
 		scanf("%d",&n);
    
 		memset(y,0,sizeof(y));
    
 		gets(inf);
    
 		
    
 		for(j = 0; j < n; ++j)
    
 		{
    
 			cnt = f = 0;
    
 			gets(inf);
    
 			for(i = 0; inf[i] != ' ' && inf[i]; ++i);
    
 			for(; inf[i]; ++i){
    
 				if(inf[i-1] == ' ' && inf[i] == 'y'){
    
 					if(cnt == 0)
    
 						++y[1];
    
 					else
    
 						++y[2];
    
 					++cnt;
    
 					f = 1;
    
 				}
    
 				else if(inf[i-1] ==' ' && inf[i] =='n'){
    
 					++cnt;
    
 				}
    
 			}
    
 			if(cnt == 0)
    
 				++y[4];
    
 			else if(!f)
    
 				++y[3];
    
 		}
    
 		printf("Roll-call: %d\n",++cas);
    
 		printf("Present: %d out of %d\n",y[1],n);
    
 		printf("Needs to study at home: %d out of %d\n",y[2],n);
    
 		printf("Needs remedial work after school: %d out of %d\n",y[3],n);
    
 		printf("Absent: %d out of %d\n",y[4],n);
    
 	}
    
 	return 0;
    
 }
    
    
    
    
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