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Submission #495885

# Submission time Handle Problem Language Result Execution time Memory
495885 2021-12-20T07:24:06 Z keertan Balloons (CEOI11_bal) C++17
10 / 100
 200 ms 7804 KB 
#include <bits/stdc++.h>
using namespace std;
//#define int  int64_t
#define all(x) x.begin(), x.end()
#define all1(x) x.rbegin(), x.rend()
#define sz(x) (int)(x.size())
const int N = 1e5 + 5, mod = 1e9 + 7;
const int64_t N1=1e18;
const double eps=1e-11;
//#define double long double
void solve(){
  int n;
  cin>>n;
  vector<pair<double,double>> z(n);
  for (pair<double,double> &it:z){cin>>it.first>>it.second;}
  stack<pair<double,double>> s;
  for (int i=0;i<n;i++){
    bool chk=1;
    while(1){
      if (s.empty()){
        s.emplace(z[i].first,z[i].second);
        break;
      }
      else{
        double x=z[i].first,y=z[i].second,x1=s.top().first,y1=s.top().second;
        double r=1.0*(1.0*(x1-x)*(x1-x))/(4.0*y1);
        if (chk){chk=0,r=min(y,r);}
        if (r>=y1){s.pop();}
        else{
          s.emplace(z[i].first,r);
          break;
        }
      }
    }
    cout<<fixed<<setprecision(3)<<s.top().second<<"\n";
  }
}
int32_t main(){
  ios::sync_with_stdio(false),cin.tie(nullptr),cout.tie(nullptr);
  int tq = 1;
  //cin>>tq;
  for (;tq;tq--){solve();}
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB 10 numbers

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 312 KB 2nd numbers differ - expected: '252735385.4379999936', found: '1000000000.0000000000', error = '747264614.5620000362'

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB 6th numbers differ - expected: '213.0000000000', found: '238.0000000000', error = '25.0000000000'

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 332 KB 79th numbers differ - expected: '36.0070000000', found: '2766.0000000000', error = '2729.9930000000'

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 20 ms 900 KB 137th numbers differ - expected: '67.1010000000', found: '3129.0000000000', error = '3061.8990000000'

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 58 ms 2108 KB 250th numbers differ - expected: '15134.0000000000', found: '18307.0000000000', error = '3173.0000000000'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 116 ms 4160 KB 162nd numbers differ - expected: '7765.0000000000', found: '14571.0000000000', error = '6806.0000000000'

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 125 ms 4784 KB 510th numbers differ - expected: '4505.0010000000', found: '13465.0000000000', error = '8959.9990000000'
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 176 ms 6348 KB 161st numbers differ - expected: '1703.0000000000', found: '4036.0000000000', error = '2333.0000000000'
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 200 ms 7804 KB 248th numbers differ - expected: '2694.0020000000', found: '8658.0000000000', error = '5963.9980000000'
2 Halted 0 ms 0 KB -