diff --git a/c.c b/c.c
new file mode 100644
index 0000000..0ac0267
--- /dev/null
+++ b/c.c
@@ -0,0 +1,30 @@
+#include<stdio.h>
+int main()
+{
+int i,j,k;
+int ar[12345];
+int N,Q;
+int a,b,c;
+if(scanf("%d %d",&N,&Q)){};
+
+for(a=0;a<N;a++)
+{
+if(scanf("%d",&ar[a])){};
+}
+for(b=0;b<Q;b++)
+{
+	if(scanf("%d %d %d",&i,&j,&k)){};
+	for(c=i;c<=j;c++)
+		
+		{
+			ar[c]=ar[c]+k;
+		}
+	
+}
+for(a=0;a<N;a++)
+printf("%d ",ar[a]);
+return 0;
+}
+
+
+
diff --git a/i2.c b/i2.c
new file mode 100644
index 0000000..218e0b9
--- /dev/null
+++ b/i2.c
@@ -0,0 +1,40 @@
+
+#include<stdio.h>
+long long int sum[1000001];
+int main()
+{
+	long long int pri[1000001];
+	long long int i,j,m,n;
+	long long int a;
+	int T;
+	for(i=0;i<1000001;i++)
+	{
+		pri[i]=1;
+	}
+	pri[0]=0;pri[1]=0;
+	for(i=2;i<1000001;i++)
+	{
+		if(pri[i]==1)
+		{
+		for(j=i;j*i<1000001;j++)
+			pri[i*j]=0;
+		}
+	}
+	for(i=2;i<1000001;i++)
+	{	
+		if(pri[i]==1)
+		pri[i]=i;
+	}
+
+	for(i=0;i<1000001;i++)
+		sum[i]=sum[i-1]+pri[i];
+	
+	if(scanf("%d",&T)){};
+	for(i=0;i<T;i++)
+	{
+		if(scanf("%lld %lld",&n,&m)){};
+		a=sum[m]-sum[n-1];
+		printf("%lld\n",a);
+	}
+	return 0;
+}