update

src/P1522/P1522.cpp

@@ -25,7 +25,7 @@ std::string s;
 double mtx_len[max_n][max_n];
 double max_len[max_n];
 const double double_max = std::numeric_limits<double>::max(), double_min = std::numeric_limits<double>::min();
-double min_ans {double_max}, default_ans{double_min};
+double min_ans {double_max}, default_ans{0};
 
 double len(const Point &p1, const Point &p2){
     return std::sqrt(
@@ -50,7 +50,6 @@ int main(){
             }
             if(s[j-1]=='1'){
                 mtx_len[i][j] = len(points[i],points[j]);
-                default_ans = std::max(default_ans,mtx_len[i][j]); 
             }else{
                 mtx_len[i][j] = double_max;
             }
@@ -78,6 +77,7 @@ int main(){
         for(ull j=1;j<=n;j++){
             if(mtx_len[i][j]==double_max)continue;
             max_len[i] = std::max(mtx_len[i][j],(max_len[i]==double_max?double_min:max_len[i]));
+            default_ans = std::max(default_ans,max_len[i]); 
         }
     }
     DEBUG(
@@ -99,5 +99,5 @@ int main(){
         }
     }
 
-    std::cout<<std::fixed<<std::setprecision(6)<<std::max(min_ans, default_ans)<<'\n';
+    std::cout<<std::fixed<<std::setprecision(6)<<(min_ans==double_max?default_ans:std::max(default_ans, min_ans))<<'\n';
 }

src/P1965/P1965.cpp

@@ -1,4 +1,3 @@
-#include <cmath>
 #include <iostream>
 
 #define NV(v)#v<<" : "<<(v)