| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 444940 |
2021-07-15T23:46:54 Z |
Bungmint |
Balloons (CEOI11_bal) |
C++17 |
|
252 ms |
8260 KB |
#pragma GCC optimize("O3")
#pragma GCC target("sse4")
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using pi = pair<int, int>;
using vpi = vector<pair<int, int>>;
using pl = pair<ll, ll>;
using vl = vector<ll>;
using vpl = vector<pl>;
using ld = long double;
#define all(v) (v).begin(), (v).end()
#define ar array
#define pb push_back
#define sz(x) (int)(x).size()
#define fi first
#define se second
#define lb lower_bound
template <typename T>
using pqg = priority_queue<T, vector<T>, greater<T>>;
template <typename A, typename B>
ostream &operator<<(ostream &os, const pair<A, B> &p)
{
return os << '(' << p.first << ", " << p.second << ')';
}
template <typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type>
ostream &operator<<(ostream &os, const T_container &v)
{
os << '{';
string sep;
for (const T &x : v)
os << sep << x, sep = ", ";
return os << '}';
}
void dbg_out()
{
cerr << endl;
}
template <typename Head, typename... Tail>
void dbg_out(Head H, Tail... T)
{
cerr << ' ' << H;
dbg_out(T...);
}
#ifdef LOCAL
#define dbg(...) cerr << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif
struct custom_hash
{
static uint64_t splitmix64(uint64_t x)
{
x += 0x9e3779b97f4a7c15;
x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
return x ^ (x >> 31);
}
size_t operator()(uint64_t x) const
{
static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
return splitmix64(x + FIXED_RANDOM);
}
};
void setIO(string s)
{
freopen((s + ".in").c_str(), "r", stdin);
freopen((s + ".out").c_str(), "w", stdout);
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int INF = 1e9;
const ll LINF = 1e18;
const int MOD = 1e9 + 7; //998244353;
const ld eps = 1e-3;
ld sq(int x){
return x*x;
}
bool gr(ld a, ld b){
return a-b>eps;
}
void solve()
{
int n;
cin >> n;
stack<pair<int,ld>> st;
vector<ld> ans(n);
for (int i=0;i<n;++i){
int x;
ld r;
cin >> x >> r;
while(!st.empty()){
pair<int,ld> p = st.top();
dbg(p);
if (!gr(sq(p.fi-x), (ld)4*r*p.se))
{
r = sq(p.fi-x)/((ld)4*p.se);
}
if (gr(r, p.se)){
st.pop();
}else break;
}
st.push({x, r});
ans[i] = r;
}
cout << fixed << setprecision(3);
for (auto x:ans) cout << x << "\n";
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int testcase=1;
// cin >> testcase;
while (testcase--)
{
solve();
}
}
Compilation message
bal.cpp: In function 'void setIO(std::string)':
bal.cpp:74:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
74 | freopen((s + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bal.cpp:75:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
75 | freopen((s + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
10 numbers |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
2nd numbers differ - expected: '252735385.4379999936', found: '0.9330000000', error = '252735384.5049999952' |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
312 KB |
505 numbers |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
3 ms |
332 KB |
506th numbers differ - expected: '365.0000000000', found: '-2481854.0649999999', error = '2482219.0649999999' |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
22 ms |
972 KB |
655th numbers differ - expected: '591.0000000000', found: '-2402336.3029999998', error = '2402927.3029999998' |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
60 ms |
2688 KB |
250th numbers differ - expected: '15134.0000000000', found: '-10429.6650000000', error = '25563.6650000000' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
118 ms |
4640 KB |
7234th numbers differ - expected: '7160.0000000000', found: '-2398141.9989999998', error = '2405301.9989999998' |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
135 ms |
5176 KB |
4643rd numbers differ - expected: '2427.0000000000', found: '-2355611.7020000000', error = '2358038.7020000000' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
181 ms |
6620 KB |
1734th numbers differ - expected: '1856.0220000000', found: '-2324667.3859999999', error = '2326523.4079999998' |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
252 ms |
8260 KB |
2723rd numbers differ - expected: '859.0470000000', found: '-2333711.4849999999', error = '2334570.5319999997' |
| 2 |
Halted |
0 ms |
0 KB |
- |
