Submission #788306

#	Time	Username	Problem	Language	Result	Execution time	Memory
788306		tr1ten	Balloons (CEOI11_bal)	C++17	10 / 100	370 ms	6320 KiB

bal

#include <cstdio>
#include <bits/stdc++.h>

using namespace std;
#include "ext/pb_ds/assoc_container.hpp"
#include "ext/pb_ds/tree_policy.hpp"
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<typename T> 
using ordered_multiset = tree<T, null_type,less_equal<T>, rb_tree_tag,tree_order_statistics_node_update>;
// find_by_order(k)  returns iterator to kth element starting from 0;
// order_of_key(k) returns count of elements strictly smaller than k;
// useful defs
typedef long long ll; 
typedef vector<ll> vi;
typedef vector<vi> vii;
typedef pair<ll,ll> pi;
typedef vector<pi> vpi;
typedef unordered_map<ll,ll> mll;
#define pb push_back
#define mp make_pair
#define rep(i,a,b) for (int i = (a); i < (b); i++)
#define per(i,a,b) for (int i = (b)-1; i >= (a); i--)
#define trav(a,arr) for (auto& a: (arr))
#define sz(x) (int)(x).size()
#define mk_vec(name,sz,value) vi name(sz,value)
#define mk_mat(name,n,m,value) vii name(n, vi(m, value))
#define contains(x) find(x) != string::npos
#define tkv(vec,sz) rep(i,0,sz) cin>>vec[i]
#define srv(vec) sort(vec.begin(), vec.end())
#define all(x) x.begin(), x.end()
#define less(a,b) a<b
#define vsum(vec) accumulate(vec.begin(), vec.end(), 0L);
#define vmax(vec) *max_element(vec.begin(), vec.end());
#define vmin(vec) *min_element(vec.begin(), vec.end());
#define pvc(vec) trav(x,vec) cout << fixed << setprecision(3)<<x<<endl; 
#define put(x) cout<<(x)<<endl;
#define put2(x,y) cout<<(x)<<" "<<(y)<<endl;
#define put3(x,y,z) cout<<(x)<<" "<<(y)<<" "<<(z)<<endl;
#define mod(x) (x + MOD)%MOD
// debugging
#define timed(x) {auto start = chrono::steady_clock::now(); x; auto end = chrono::steady_clock::now(); auto diff = end - start; cout << chrono::duration <double, milli> (diff).count() << " ms" << endl;}


void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}

#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
const ll MOD = 1e9+7;
const ll INF = 1e10+5;
typedef long double dll;
// driver code
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    // freopen("input.in","r",stdin);
    // freopen("output.out","w",stdout);	  
    int T=1;
    while(T--){
        int n;
        cin >> n;
        stack<pair<ll,dll>> st;
        vector<dll> ans;
        rep(i,0,n){
            ll x;dll r;
            cin >> x >> r;
            dll r1 = r;
            while (!st.empty() && (((st.top().first-x)*(st.top().first-x)*1.0)/(4*st.top().second))<=r1) {
                r1 = (((st.top().first-x)*(st.top().first-x)*1.0)/(4*st.top().second));
                st.pop();
            }
            ans.push_back(r1);
            st.push(mp(x,r1));
        }
        pvc(ans);
        
        
    }

    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10