diff --git a/C++/CSP/U5/A1059.cpp b/C++/CSP/U5/A1059.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..961f4772f91d462f9670b57fec60310b3e4883ad
--- /dev/null
+++ b/C++/CSP/U5/A1059.cpp
@@ -0,0 +1,71 @@
+#include <iostream>
+#include <math.h>
+using namespace std;
+#define MAX 100005
+
+int prime[MAX];
+int P_num = 0;
+bool p[MAX] = {0};
+struct store
+{
+    int x, count;
+} fac[20];
+
+void find_prime();
+int main()
+{
+    find_prime();
+    long long n;
+    cin >> n;
+    if (1 == n)
+    {
+        cout << "1=1";
+        return 0;
+    }
+    cout << n << "=";
+    int sqr = (int)sqrt(1.0 * n);
+    int num = 0;
+    for (int i = 0; i < P_num && i <= sqr; i++)
+    {
+        if (0 == n % prime[i])
+        {
+            fac[num].x = prime[i];
+            fac[num].count = 0;
+            while (0 == n % prime[i])
+            {
+                fac[num].count++;
+                n /= prime[i];
+            }
+            num++;
+        }
+        if (1 == n)
+            break;
+    }
+    if (n != 1)
+    {
+        fac[num].x = n;
+        fac[num].count = 1;
+        num++;
+    }
+    for (int i = 0; i < num; i++)
+    {
+        if(i > 0) cout << "*";
+        cout << fac[i].x;
+        if(fac[i].count > 1) cout << "^" << fac[i].count;
+    }
+    return 0;
+}
+void find_prime()
+{
+    for (int i = 2; i < MAX; i++)
+    {
+        if (0 == p[i])
+        {
+            prime[P_num++] = i;
+            for (int j = i + i; j < MAX; j += i)
+            {
+                p[j] = 1;
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/C++/CSP/U5/A1059.exe b/C++/CSP/U5/A1059.exe
new file mode 100644
index 0000000000000000000000000000000000000000..1c20b02686da7ebb35df8c69bb8f430c332ab42f
Binary files /dev/null and b/C++/CSP/U5/A1059.exe differ
diff --git a/C++/CSP/U5/B1005.cpp b/C++/CSP/U5/B1005.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..94cbad843412fbbd40be669e513a64cf05e6337a
--- /dev/null
+++ b/C++/CSP/U5/B1005.cpp
@@ -0,0 +1,78 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main()
+{
+    int n;
+    cin >> n;
+    string str;
+    while (n--)
+    {
+        cin >> str;
+        int A1_num = 0, A2_num = 0, A3_num = 0,P_num = 0, T_num = 0;
+        int flag = 0;
+        for (int i = 0; str[i] != '\0'; i++)
+        {
+            if (str[i] == 'P')
+            {
+                P_num++;
+                if(P_num>1)
+                {
+                    flag = 1;
+                    cout << "NO" <<endl;
+                    break;
+                }
+                
+            }
+            else if(str[i] == 'T')
+            {
+                T_num++;
+                if(T_num>1)
+                {
+                flag = 1;
+                cout << "NO" <<endl;
+                break;
+                }
+                if(T_num == 1 && P_num == 0)
+                {
+                    flag = 1;
+                    cout << "NO" <<endl;
+                    break;
+                }
+            }
+            else if(str[i] == 'A')
+            {
+                if(0 == P_num && 0 == T_num)
+                {
+                    A1_num++;
+                }
+                if(1 == P_num && 0 == T_num)
+                {
+                    A2_num++;
+                }
+                if(1 == P_num && 1 == T_num)
+                {
+                    A3_num++;
+                }
+            }
+            else
+            {
+                flag = 1;
+                cout << "NO" <<endl;
+                break;
+            }
+        }
+        if(1 == flag) continue;
+        if(A1_num * A2_num == A3_num && A2_num > 0 && P_num ==1 && T_num == 1)
+        {
+            cout << "YES" <<endl;
+        }
+        else
+        {
+            cout << "NO" <<endl;
+        }
+        
+    }
+
+    return 0;
+}
\ No newline at end of file
diff --git a/C++/CSP/U5/B1005.exe b/C++/CSP/U5/B1005.exe
new file mode 100644
index 0000000000000000000000000000000000000000..577ac8f3c96672a1558a9bf8e6c6397f061ffab4
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diff --git a/C++/CSP/U5/B1049.cpp b/C++/CSP/U5/B1049.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..960c09ee601848a7421088d8d1b5439b67659849
--- /dev/null
+++ b/C++/CSP/U5/B1049.cpp
@@ -0,0 +1,19 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int main()
+{
+    int n;
+    cin >> n;
+    double sum;
+    long long temp = 0;
+    for (int i = 0; i < n; i++)
+    {
+        double x;
+        cin >> x;
+        temp += (long long)(i + 1) * (long long)(n - i) * (long long)(x * 1000);
+    }
+    sum = 1.0 * temp / 1000;
+    printf("%.2lf\n",sum);
+    return 0;
+}
\ No newline at end of file
diff --git a/C++/CSP/U5/B1049.exe b/C++/CSP/U5/B1049.exe
new file mode 100644
index 0000000000000000000000000000000000000000..ed71cbc8d0aa512dda9555590d1fec8606c5d165
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diff --git a/C++/CSP/U5/output/B1005.exe b/C++/CSP/U5/output/B1005.exe
new file mode 100644
index 0000000000000000000000000000000000000000..954ae6a725aa51cb3478624fa393e1addb12798f
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diff --git a/C++/CSP/U5/output/B1049.exe b/C++/CSP/U5/output/B1049.exe
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index 0000000000000000000000000000000000000000..dc37ccfffa788523795ee3468cbea4cbe25ddf08
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