View Compilation Error

0_0_38616074_19225.cpp: In function 'int main()':
0_0_38616074_19225.cpp:47:15: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
     chkmn(dp[i],dp[j]+c*c);
           ~~~~^
0_0_38616074_19225.cpp:19:6: note:   initializing argument 1 of 'void chkmn(int&, int)'
 void chkmn(int &x,int y){if(x>y) x=y;}
      ^~~~~