[CodeForces][JAVA] 231A. Team

2명이상 풀 수 있는 문제 counting해줌

 

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
 
public class HelloWorld {
    private static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    private static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
    
    public static void main(String[] args) throws IOException {
        int T = Integer.parseInt(br.readLine());
        int res = 0;
        
        for(int i=0; i<T; i++) {
            String input = br.readLine();
            int numWhoCanSolve = Character.getNumericValue(input.charAt(0)) 
                    + Character.getNumericValue(input.charAt(2)) 
                    + Character.getNumericValue(input.charAt(4));
            
            if(numWhoCanSolve>=2) res++;
            
            
        }
        bw.write(Integer.toString(res));
        bw.flush();
        
    }
    
    
}