diff --git a/src/P1522/P1522.cpp b/src/P1522/P1522.cpp
index 0f304d3..cc54202 100644
--- a/src/P1522/P1522.cpp
+++ b/src/P1522/P1522.cpp
@@ -1,3 +1,5 @@
+#define NDEBUG
+
 #include <cmath>
 #include <iomanip>
 #include <iostream>
@@ -5,6 +7,11 @@
 #include <string>
 
 #define NV(v)#v<<" : "<<(v)
+#ifdef NDEBUG
+    #define DEBUG(code)
+#else
+    #define DEBUG(code){code}
+#endif
 
 using ull = unsigned long long;
 const size_t max_n = 150+5;
@@ -70,15 +77,21 @@ int main(){
             max_len[i] = std::max(mtx_len[i][j],(max_len[i]==double_inf?double_min:max_len[i]));
         }
     }
-    // std::cout<<NV(min_ans)<<"\n---start\n";
+    DEBUG(
+        std::cout<<NV(min_ans)<<"\n---start\n";
+    )
     for(ull i=1;i<=n;i++){
         for(ull j=i+1;j<=n;j++){
             if(mtx_len[i][j]==double_inf){
-                // std::cout<<NV(i)<<'\n'<<NV(j)<<'\n'<<NV(max_len[i])<<'\n'<<NV(max_len[j])<<'\n'
-                // <<NV(len(points[i], points[j]))<<'\n'<<NV(max_len[i]+ len(points[i], points[j]) + max_len[j])<<'\n';
+                DEBUG(
+                    std::cout<<NV(i)<<'\n'<<NV(j)<<'\n'<<NV(max_len[i])<<'\n'<<NV(max_len[j])<<'\n'
+                        <<NV(len(points[i], points[j]))<<'\n'<<NV(max_len[i]+ len(points[i], points[j]) + max_len[j])<<'\n';
+                )
                 min_ans = std::min(max_len[i]+ len(points[i], points[j]) +max_len[j],min_ans);
-                // std::cout<<NV(min_ans)<<'\n';
-                // std::cout<<"---\n";
+                DEBUG(
+                    std::cout<<NV(min_ans)<<'\n';
+                    std::cout<<"---\n";
+                )
             }
         }
     }