Submission #923818

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
923818	2024-02-07T21:00:42 Z	TB_	Balloons (CEOI11_bal)	C++17	20 / 100	122 ms	5120 KB

#include <bits/stdc++.h>
using namespace std;

// #undef _GLIBCXX_DEBUG                // disable run-time bound checking, etc
// #pragma GCC optimize("Ofast,inline") // Ofast = O3,fast-math,allow-store-data-races,no-protect-parens
// #pragma GCC optimize ("unroll-loops")

// #pragma GCC target("bmi,bmi2,lzcnt,popcnt")                      // bit manipulation
// #pragma GCC target("movbe")                                      // byte swap
// #pragma GCC target("aes,pclmul,rdrnd")                           // encryption
// #pragma GCC target("avx,avx2,f16c,fma,sse3,ssse3,sse4.1,sse4.2") // SIMD

// #include <bits/extc++.h>
// using namespace __gnu_pbds;
// template<class T>using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
// template<class T>using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define ll long long
#define INF ((ll)(1e9+7))
#define fo(i, n) for(ll i=0;i<((ll)n);i++)
#define deb(x) cout << #x << " = " << (x) << endl;
#define deb2(x, y) cout << #x << " = " << (x) << ", " << #y << " = " << (y) << endl
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define LSOne(S) ((S) & (-S))
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
inline int readint(){ int v = 0; char c; while((c = getchar()) != EOF && c != ' ' && c != '\n'){ v *= 10; v += c - '0'; } return v; }
inline int readintsigned() { int v = 0; int sign = 1; char c = getchar(); if (c == '-') { sign = -1; } else { v += c - '0'; } while ((c = getchar()) != EOF && c != ' ' && c != '\n') { v *= 10; v += c - '0'; } return v * sign; }
inline string readstring() { string s; char c; while ((c = getchar()) != EOF && c != '\n' && c != ' ') { s.push_back(c); } return s; }
template <class result_t=std::chrono::milliseconds,class clock_t=std::chrono::steady_clock,class duration_t = std::chrono::milliseconds>
auto since(std::chrono::time_point<clock_t, duration_t> const& start){return std::chrono::duration_cast<result_t>(clock_t::now() - start);}
typedef pair<int, int> pii;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpii;
typedef vector<pl> vpl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef vector<vpii> vvpii;
typedef vector<vpl> vvpl;



int main() {
    cout << fixed << setprecision(3);
    // auto start = std::chrono::steady_clock::now(); // since(start).count()
    cin.tie(0)->sync_with_stdio(0);

    int n;
    cin >> n;
    vl a(n), b(n);
    fo(i, n){
        cin >> a[i] >> b[i];
    }

    vector<pair<ll, long double>> saved;

    fo(qu, n){
        long double res = b[qu];
        for(int i = ((ll)saved.size())-1; i>=0; i--){
            if(saved[i].F+saved[i].S<=a[qu]-res) break;
            res = min(res, (a[qu]*a[qu]+saved[i].F*saved[i].F-2ll*a[qu]*saved[i].F)/((long double)(4.0*saved[i].S)));
            // deb((a[qu]*a[qu]+saved[i].F*saved[i].F-2ll*a[qu]*saved[i].F)/((long double)(4.0*saved[i].S)));
        }
        cout << res << "\n";
        while(!saved.empty()){
            if(saved[saved.size()-1].S>res) break;
            saved.pop_back();
        }
        saved.pb({a[qu], res});
    }


    return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	10 numbers

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 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	1 ms	348 KB	399th numbers differ - expected: '9.9760000000', found: '37.0000000000', error = '27.0240000000'
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	12 ms	1112 KB	1209th numbers differ - expected: '72.2820000000', found: '178.0000000000', error = '105.7180000000'
2	Halted	0 ms	0 KB	-

Subtask #6
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	30 ms	2008 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	66 ms	3172 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	79 ms	3576 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	94 ms	4400 KB	1736th numbers differ - expected: '0.0050000000', found: '3.0000000000', error = '2.9950000000'
2	Halted	0 ms	0 KB	-

Subtask #10
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	122 ms	5120 KB	2718th numbers differ - expected: '2.2100000000', found: '3.0000000000', error = '0.7900000000'
2	Halted	0 ms	0 KB	-

Submission #923818

Compilation message