[CodeUp] 1080 - 1089 문제 풀이(Java)

CodeUp-1080

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int input = sc.nextInt();
    int sum=0;
    for(int i=0;;i++) {
        sum+=i;
        if(sum>=input) {
            System.out.println(i);
            break;
        }
    }
}

CodeUp-1081

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int first = sc.nextInt();
    int second = sc.nextInt();
    
    for(int i=1;i<=first;i++) {
        for(int j=1;j<=second;j++) {
            System.out.println(i+" "+j);
        }
    }
}

CodeUp-1082

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a= sc.nextInt(16);
    for(int i=1;i<=0xf;i++) {
        System.out.printf("%X*%X=%X\n",a,i,a*i);
    }    
}

CodeUp-1083

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a= sc.nextInt();
    for(int i=1;i<=a;i++) {
        if(i%3==0) System.out.print("X ");
        else System.out.print(i+" ");
    }
}

CodeUp-1084

public static void main(String[] args) {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    try {
        String a = br.readLine();
        String[] b = a.split(" ");
        int count=0;
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        for(int i=0;i<Integer.valueOf(b[0]);i++) {
            for(int j=0;j<Integer.valueOf(b[1]);j++) {
                for(int k=0;k<Integer.valueOf(b[2]);k++) {
                    bw.write(i+" "+j+" "+k+"\n");
                    count++;
                }
            }
        }
        bw.write(String.valueOf(count));
        bw.flush();
    } catch(IOException e) {
        e.printStackTrace();
    }
}

CodeUp-1085

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String[] a = sc.nextLine().split(" ");
    long sum=1;
    for(int i=0;i<a.length;i++)
        sum*=Integer.valueOf(a[i]);        
    System.out.printf("%.1f MB",sum/(8.0*1024*1024));
}

CodeUp-1086

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String[] a = sc.nextLine().split(" ");
    long sum=1;
    for(int i=0;i<a.length;i++)
        sum*=Integer.valueOf(a[i]);        
    System.out.printf("%.2f MB",sum/(8.0*1024*1024));
}

CodeUp-1087

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int i=1;
    long sum=0;
    
    while(true) {
        sum+=i;
        if(sum>=a) break;
        i++;
    }
    System.out.println(sum);
}

CodeUp-1088

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    for(int i=1;i<=a;i++) {
        if(i%3==0) continue;
        System.out.print(i+" ");
    }
}

CodeUp-1089

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int d = sc.nextInt();
    int n = sc.nextInt();
    
    for(int i=1;i<n;i++)
        a+=d;
    System.out.println(a);
}