Submission #969992

#	Time	Username	Problem	Language	Result	Execution time	Memory
969992		Aiperiii	Balloons (CEOI11_bal)	C++14	Compilation error	0 ms	0 KiB

bal

#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
signed main(){
    ios_base::sync_with_stdio();
    cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    vector <int> r(n),x(n);
    vector <long double> ans;
    for(int i=0;i<n;i++)cin>>x[i]>>r[i];
    ans.pb(r[0]);
    for(int i=1;i<n;i++){
        int a=r[i],b=1;
        for(int j=0;j<i;j++){
            if(a*4*r[j]>b*(x[i]-x[j])*(x[i]-x[j])){
                a=(x[i]-x[j])*(x[i]-x[j]);
                b=4*r[j];
            }
            int x=gcd(a,b);
            a/=x;
            b/=x;
        }
        ans.pb((long double)a/b);
    }
    for(auto x : ans)cout<<fixed<<setprecision(3)<<x<<"\n";
}
/*
 
3
0 9
8 1
13 7
 
*/

Compilation message (stderr)

bal.cpp: In function 'int main()':
bal.cpp:24:19: error: 'gcd' was not declared in this scope
   24 |             int x=gcd(a,b);
      |                   ^~~