Bj1

2.c

@@ -0,0 +1,43 @@
+#include<stdio.h>
+int b[25];
+int main()
+{
+	unsigned long long int i,j,k,n,sum;
+	int flag=0;
+	scanf("%llu%llu",&n,&k);
+unsigned long long int a[n];
+
+
+	for(i=0;i<n;i++)
+	{
+		scanf("%llu",&a[i]);
+
+	}
+
+	for(i=1;i<(1<<n);i++)
+	{
+		sum=0;
+		for(j=0;j<n;j++)
+		{
+			if(i&(1<<j)==(1<<j))
+			{
+				sum=sum+a[j];
+			}
+
+			if(sum==k)
+			{
+				flag=1;
+				break;
+			}
+
+		}
+
+		if(flag==1)
+				break;
+	}
+if(flag==1)
+{printf("yes");}
+else
+{printf("no");}
+return 0;
+}

5.c

@@ -0,0 +1,51 @@
+#include<stdio.h>
+int main()
+{
+
+	long long int n,v,sum,count,j,i,least,x;
+	int t,p;
+	scanf("%d",&t);
+
+	for(p=1;p<=t;p++)
+	{
+		scanf("%lld%lld",&n,&v);
+                long long int a[n];
+
+		for(i=0;i<n;i++)
+		{scanf("%lld",&a[i]);}
+
+		for(i=0;i<n-1;i++)
+		{least=i;
+			for(j=i+1;j<n;j++)
+			{
+				if(a[j] < a[least])
+				{least=j;}
+			}
+			x=a[i];
+			a[i]=a[least];
+			a[least]=x;
+		}
+
+		sum=0;
+                count=0;
+               int flag=0;
+		for(i=n-1;i>=0;i--)
+		{
+			sum=sum + a[i];
+			count++;
+			if(sum >= v)
+			{  flag=1;
+                           break;}
+
+
+		}
+
+                 if(flag==0)
+                 {printf("-1\n");}
+
+                  else if (flag==1)
+	          {printf("%lld\n",count);}
+
+	}
+
+}

c.c

@@ -0,0 +1,5 @@
+#include<stdio.h>
+int main()
+{
+	printf("hello world");
+}