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Submission #868375

# Submission time Handle Problem Language Result Execution time Memory
868375 2023-10-31T09:01:39 Z noyancanturk Balloons (CEOI11_bal) C++17
10 / 100
 146 ms 6628 KB 
#ifndef Local
    #pragma GCC optimize("O3,unroll-loops")
#endif
#include <bits/stdc++.h>
#define int long long
#define pb push_back
using namespace std;
const int lim=2e5+1;
int mod=1e9+7;
using pii=pair<int,int>;

void solve(){
    int n;
    cin>>n;
    double x[n],r[n];
    for(int i=0;i<n;i++){
        cin>>x[i]>>r[i];
    }    
    cout<<fixed<<setprecision(3);
    stack<pair<double,double>>s;
    for(int i=0;i<n;i++){
        auto check=[&]()->bool {
            double dist=(x[i]-s.top().second),cur=dist*dist/(4*s.top().first);
            cur=min(cur,r[i]);
            if(s.top().first<=cur)return 1;
            return 0;
        };
        while(s.size()&&check()){
            s.pop();
        }
        if(!s.size()){
            cout<<r[i]<<"\n";
            s.push({r[i],x[i]});
            continue;
        }
        double dist=abs(x[i]-s.top().second),cur=dist*dist/(4*s.top().first);
        if(r[i]<cur){
            cout<<r[i]<<"\n";
            s.push({r[i],x[i]});
        }else{
            cout<<cur<<"\n";
            s.push({cur,x[i]});
        }
    }
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
#ifdef Local  
    freopen(".in","r",stdin);
    freopen(".out","w",stdout);
#else
    //freopen("dishes.in","r",stdin);
    //freopen("dishes.out","w",stdout);
#endif
    int t=1;
    //cin>>t;
    while (t--)
    {
        solve();
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB 10 numbers

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB 2nd numbers differ - expected: '252735385.4379999936', found: '1000000000.0000000000', error = '747264614.5620000362'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB 6th numbers differ - expected: '213.0000000000', found: '238.0000000000', error = '25.0000000000'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 348 KB 79th numbers differ - expected: '36.0070000000', found: '2766.0000000000', error = '2729.9930000000'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 1000 KB 137th numbers differ - expected: '67.1010000000', found: '3129.0000000000', error = '3061.8990000000'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 37 ms 2132 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 77 ms 3780 KB 162nd numbers differ - expected: '7765.0000000000', found: '14571.0000000000', error = '6806.0000000000'
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 105 ms 4572 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 118 ms 5564 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 146 ms 6628 KB 248th numbers differ - expected: '2694.0020000000', found: '8658.0000000000', error = '5963.9980000000'
2 Halted 0 ms 0 KB -