oj.uz

Submission #988281

# Submission time Handle Problem Language Result Execution time Memory
988281 2024-05-24T12:03:03 Z hegoplay Balloons (CEOI11_bal) C++14
10 / 100
 89 ms 6412 KB 
/*
                                                                                                        -
                                                             +=
                                                           @@@@@%
                                                         +@@@@@@+
                                                      %@@@@@#%
                                                     @@@@@@@@=:
                       +******************         =@@@@@@@@@%         =***********#*******+
                    %@@@@@@@@@@@@@@@@@@@@=         @@@@@@@@@@%      #@@@@@@@@@@@@@@@@@@@@@@
                  +@@@@@@@@@@@@@@@@@@@@@+        +@@#@@@@@@@@%     @@@@@@@@@@@@@@@@@@@@@@@=
                 +@@@@%                         *@@%@@@@@@@@@=    %@@@%
                 @@@@@#                        *@@@@@@@@@@@@#    #@@@@@
                %@@@@%                        +@@@@@@@@@@@@%     @@@@@@@@@@@@@@@@@@@@%
               #@@@@@                        =#+@@@@@@@@#@%      =@@@@@@@@@@@@@@@@@@@@*
              +@@@@@+                         #@@@@@@%                          =@@@@@=
             =@@@@@*                        #@@@@@@#                            @@@@@*
             #@@@@@@@@@@@@@@@@@@@@@       +@@@@@@#           *@@@@@@@@@@@@@@@@@@@@@@#
             +@@@@@@@@@@@@@@@@@@@@=      %@@@@@%            +@@@@@@@@@@@@@@@@@@@@@@+
               +*#************##*      =@@@@@#+             ###**##**#*******##*+
                                      =@@@@@@%
                                        +**  =+=
                                    Michael Jackson peeks

    "Nothing is hard to understand, you just didn't get it."
    @author: MahK17
*/

#include <bits/stdc++.h>
#include <set>
#include <vector>
#include <algorithm>
#include <map>
#include <queue>
#include <stack>
#include <cmath>
#include <unordered_map>
#include <unordered_set>
#include <string>
#include <sstream>
#include <numeric>
#include <cstdio>
#include <cstring>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#define pb push_back
#define inf 0x3f3f3f3f3f3f3f3f
#define all(x) (x).begin(), (x).end()
#define yes cout << "YES\n";
#define no cout << "NO\n";
#define sz(x) (int)(x).size()
#define el "\n"
typedef long long ll;
typedef long double ld;
#define int long long

using namespace __gnu_pbds;
using namespace std;

#define indexed_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>

void setIO(string name = "")
{
    if (sz(name))
    {
        freopen((name + ".in").c_str(), "r", stdin); // see /general/input-output
        freopen((name + ".out").c_str(), "w", stdout);
    }
}

ld find(ld lb, ld x1, ld x2)
{
    // binary search 4*lb*x = (x1-x2)**2
    return (x1 - x2) * (x1 - x2) / (4 * lb);
}

void solve()
{
    int n;
    cin >> n;
    vector<pair<int, int>> a(n);
    for (int i = 0; i < n; i++)
    {
        cin >> a[i].first >> a[i].second;
    }
    stack<pair<ld, ld>> s;
    for (int i = 0; i < n; i++)
    {
        ld curSize = a[i].second;

        while (!s.empty())
        {
            ld x1 = s.top().first;
            ld x2 = a[i].first;
            ld lb = s.top().second;
            ld x = find(lb, x1, x2);
            if (x < curSize)
            {
                s.pop();
                curSize = x;
            }
            else
                break;
        }
        s.push({a[i].first, curSize});
        printf("%.3Lf\n", curSize);
    }
}

signed main()
{

    ios ::sync_with_stdio(false);
    std::cin.tie(nullptr);
    ll t = 1;
    // cin >> t;
    while (t--)
        solve();
    return 0;
}

Compilation message

bal.cpp: In function 'void setIO(std::string)':
bal.cpp:66:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |         freopen((name + ".in").c_str(), "r", stdin); // see /general/input-output
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bal.cpp:67:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   67 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB 5th numbers differ - expected: '17.1630000000', found: '99.0000000000', error = '81.8370000000'
2 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB 2 numbers

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB 3rd numbers differ - expected: '0.0420000000', found: '3.0000000000', error = '2.9580000000'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB 114th numbers differ - expected: '39.0180000000', found: '56.0000000000', error = '16.9820000000'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 856 KB 196th numbers differ - expected: '100.7250000000', found: '111.0000000000', error = '10.2750000000'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 1876 KB 13945th numbers differ - expected: '0.0140000000', found: '7.0000000000', error = '6.9860000000'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 46 ms 3412 KB 7236th numbers differ - expected: '0.0070000000', found: '7.0000000000', error = '6.9930000000'
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 53 ms 3924 KB 4645th numbers differ - expected: '0.0260000000', found: '8.0000000000', error = '7.9740000000'
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 73 ms 4940 KB 1730th numbers differ - expected: '5.6890000000', found: '6.8060000000', error = '1.1170000000'
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 89 ms 6412 KB 2716th numbers differ - expected: '22.1690000000', found: '43.0000000000', error = '20.8310000000'
2 Halted 0 ms 0 KB -