diff --git a/6.cpp b/6.cpp
new file mode 100644
index 0000000..527b5c7
--- /dev/null
+++ b/6.cpp
@@ -0,0 +1,68 @@
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+#include <iostream>
+#include <ostream>
+#include <arm_neon.h>
+void sparse_matmul_coo(float **A_denseMatrix,float **B_denseMatrix,float **C_denseMatrix,int MAX){
+	for(int i=0;i<MAX;++i){
+		for(int j=0;j<MAX;++j){
+			float32x4_t vecC_denseMatrix=vdupq_n_f32(0.0);
+	        for(int k=0;k<MAX;k+=4){
+		        float32x4_t vecA_denseMatrix=vld1q_f32(&A_denseMatrix[i][k]);
+		        float32x4_t vecB_denseMatrix=vld1q_f32(&B_denseMatrix[i][k]);
+		        vecC_denseMatrix=vmlaq_f32(vecC_denseMatrix,vecA_denseMatrix,vecB_denseMatrix);
+		        C_denseMatrix[i][j]=vgetq_lane_f32(vecC_denseMatrix,0)+vgetq_lane_f32(vecC_denseMatrix,1)
+				+vgetq_lane_f32(vecC_denseMatrix,2)+vgetq_lane_f32(vecC_denseMatrix,3);
+	        }
+		}
+	}
+}
+int main(){
+	float A_values[]={1,2,3,4,5};
+	int A_rowIndex[]={0,0,1,2,2};
+	int A_colIndex[]={0,2,1,0,2};
+	int A_nonZeroCount=5;
+	
+	float B_values[]={6,8,7,9};
+	int B_rowIndex[]={0,2,1,2};
+	int B_colIndex[]={0,0,1,2};
+	int B_nonZeroCount=4;
+	
+	int MAX;
+	if(A_nonZeroCount>B_nonZeroCount)MAX=A_nonZeroCount;
+	else MAX=B_nonZeroCount;
+	
+	float C_values[MAX];
+	int C_rowIndex[MAX];
+	int C_colIndex[MAX];
+	int C_nonZeroCount=0;
+	
+	int ROWS=MAX,COLS=MAX;
+	float **A_denseMatrix=new float*[MAX];
+	float **B_denseMatrix=new float*[MAX];
+	float **C_denseMatrix=new float*[MAX];
+	for(int i=0;i<MAX;++i){
+		A_denseMatrix[i]=new float[MAX];
+		B_denseMatrix[i]=new float[MAX];
+		C_denseMatrix[i]=new float[MAX];
+	}
+	for(int i=0;i<A_nonZeroCount;i++){
+		int row=A_rowIndex[i];
+		int col=A_colIndex[i];
+		A_denseMatrix[row][col]=A_values[i];
+	}
+	for(int i=0;i<B_nonZeroCount;i++){
+		int row=B_rowIndex[i];
+		int col=B_colIndex[i];
+		B_denseMatrix[row][col]=B_values[i];
+	}
+	
+	
+	
+	clock_t start=clock();
+	sparse_matmul_coo(A_denseMatrix,B_denseMatrix,C_denseMatrix,MAX);
+					   
+	clock_t end=clock();
+	std::cout<<"优化的稀疏矩阵乘法时间："<< double(end-start)/CLOCKS_PER_SEC<<"秒"<<std::endl;
+}
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