제출 #1332445

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1332445		mrbet	Balloons (CEOI11_bal)	C++17	100 / 100	106 ms	11436 KiB

bal

#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define forr(_a,_b,_c) for(int _a = (_b); _a <= int (_c); ++_a)
#define ford(_a,_b,_c) for(int _a = (_b) + 1; _a --> int (_c);)
#define forf(_a,_b,_c) for(int _a = (_b); _a < int (_c); ++_a)
#define pb push_back
#define fi first
#define se second
#define vi vector
#define all(_v) _v.begin(), _v.end()
#define mask(_x) (1ll << (_x))
#define bit(_x,_y) (((_x) >> (_y)) & 1)
#define file "A"

string yes[2] = {"NO\n","YES\n"};
const ld eps = ld(1e-7);
const ll inf = ll(1e16) + 1;
const ll mod = ll(1e9) + 7;

template<class X, class Y>
inline bool Min(X &x, const Y &y) {
  if(x > y) {
    x = y;
    return true;
  }
  return false;
}

template<class X, class Y>
inline bool Max(X &x, const Y &y) {
  if(x < y) {
    x = y;
    return true;
  }
  return false;
}

const int N = 2e5+5;

int n;
pair<ld,ld> a[N];
stack<pair<ld,ld>> st;
ld rad_i[N];

ld calc_dis(pair<ld,ld> a, ld bx) {
    return (a.fi- bx) * (a.fi-bx) / (4*a.se);
}

void Mei () {
    cin>>n;
    forr(i,1,n) cin>>a[i].fi>>a[i].se;

    forr(i,1,n) {
        ld max_r= a[i].se;

        while (st.size()){
            auto k= st.top();

            ld dis= calc_dis(k,a[i].fi);

            max_r=min(max_r,dis);
            if (max_r>= k.se) {
                st.pop();
                continue;
            }
            else break;
        }
        st.push({a[i].fi,max_r});
        rad_i[i]= max_r;
    }
    forr(i,1,n) cout<<rad_i[i]<<' ';

}

void precalc() {
}

int main() {
  ios_base::sync_with_stdio(false); cin.tie(0);
  cout << fixed << setprecision(3);

  if (fopen(file".inp","r")) {
    freopen(file".inp","r",stdin); freopen(file".out","w",stdout);
  }
  else if (fopen(file".in","r")) {
    freopen(file".in","r",stdin); freopen(file".out","w",stdout);
  }

  int tc = 1;
 // cin >> tc;
  precalc();
  while(tc--) {
    Mei();
  }

  return 0;
}
// 36

컴파일 시 표준 에러 (stderr) 메시지

bal.cpp: In function 'int main()':
bal.cpp:88:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |     freopen(file".inp","r",stdin); freopen(file".out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bal.cpp:88:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |     freopen(file".inp","r",stdin); freopen(file".out","w",stdout);
      |                                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bal.cpp:91:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |     freopen(file".in","r",stdin); freopen(file".out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
bal.cpp:91:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |     freopen(file".in","r",stdin); freopen(file".out","w",stdout);
      |                                   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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