diff --git a/src/8/30/P1896.cpp b/src/8/30/P1896.cpp
index 98a4162..c9f9e96 100644
--- a/src/8/30/P1896.cpp
+++ b/src/8/30/P1896.cpp
@@ -22,6 +22,7 @@ int main(){
     std::cin.tie(nullptr);
 
     std::cin>>n>>K;
+    // std::cout<<n<<" "<<K<<"\n";
     line.reserve(n*n+1);
     line.push_back(0);
     for(ll msk=0;msk<(1ll<<n);++msk){
@@ -44,8 +45,9 @@ int main(){
     dp.resize(n+1,std::vector<std::vector<ll>>(line.size(),std::vector<ll>(K+1)));
 
     
-    for(ll j=1;j<line.size();++j){
+    for(ll j=1;j<line.size();j++){
         ll num1 = get1n(line[j]);
+        if(num1>K)continue;
         dp[1][j][num1]=1;
     }
 
@@ -62,7 +64,7 @@ int main(){
                 ){
                     continue;
                 }else{
-                    for(ll x=cur1n;x<=K;K++){
+                    for(ll x=cur1n;x<=K;x++){
                         dp[i][j][x]+=dp[i-1][k][x-cur1n];
                     }
                 }
diff --git a/src/8/30/P1896_pai.cpp b/src/8/30/P1896_pai.cpp
new file mode 100644
index 0000000..5a51047
--- /dev/null
+++ b/src/8/30/P1896_pai.cpp
@@ -0,0 +1,11 @@
+#include <iostream>
+#include <random>
+
+std::random_device rd{};
+
+std::mt19937 mt{rd()};
+
+int main(){
+    std::uniform_int_distribution uni1{1,9}, uni2{1,81};
+    std::cout<<uni1(mt)<<" "<<uni2(mt)<<"\n";
+}
\ No newline at end of file