oj.uz

답안 #485118

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
485118 2021-11-06T08:33:49 Z hammer23 Balloons (CEOI11_bal) C++14
0 / 100
 3 ms 384 KB 
#include <bits/stdc++.h>
using namespace std;

/*******  All Required define Pre-Processors and typedef Constants *******/
typedef pair<int,int> pii;
#define fastIO ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define sz(x) (int)(x).size()
#define all(x) x.begin(),x.end()
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
#define pb push_back
#define eb emplace_back
#define pf push_front
#define ll long long
#define numBit(x) __builtin_popcount(x)
#define lb lower_bound
#define ub upper_bound
#define ar array
#define endl '\n'
#define fi first
#define se second

const int inf = 1e9+1;
const int maxN = 2e5 + 1;
const int MOD = 1e9 + 7;

using namespace std;
 ll powmod(ll a, ll b, ll p){
    a %= p;
    if (a == 0) return 0;
    ll product = 1;
    while(b > 0){
        if (b&1){
            product *= a;
            product %= p;
            --b;
        }
        a *= a;
        a %= p;
        b /= 2;
    }
    return product;
}
 ll inv(ll a, ll p){
    return powmod(a, p-2, p);
}

 ll DIVMOD(ll a, ll b, ll p){
    // A*(B^(MOD-2))%MOD
    return a*inv(b,p)%p;
}
void file(const string FILE = "bongbong") {
    freopen((FILE + ".INP").c_str(), "r", stdin);
    freopen((FILE + ".OUT").c_str(), "w", stdout);
}

int n;
int xx,yy,rr=0;
int x[maxN];
double r[maxN];
void solve(){
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>x[i]>>r[i];
    }
    for(int i=0;i<n;i++){
        double ans=inf;
        int j;
        bool ok=0;
        for(j=i-1;j>=0;j--){
            if((r[i]+r[j])*(r[i]+r[j])>=(x[i]-x[j])*(x[i]-x[j])+(r[i]-r[j])*(r[i]-r[j])){
                ans=min(ans,((x[i]-x[j])*(x[i]-x[j]))/(1.0*4*r[j]));
                ok=1;
            }
        }
        if(!ok) ans=r[i];
        r[i]=ans;
        //cout<<ans<<setprecision(3)<<endl;
        printf("%.3lf\n", ans);
    }
}

int main()
{
    file();
    fastIO;
    int t=1;
    //cin>>t;
    while(t--)
        solve();
    return 0;
}

Compilation message

bal.cpp: In function 'void file(std::string)':
bal.cpp:56:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |     freopen((FILE + ".INP").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bal.cpp:57:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |     freopen((FILE + ".OUT").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected

Subtask #5
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected

Subtask #6
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected

Subtask #8
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 384 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 332 KB Unexpected end of file - double expected
2 Halted 0 ms 0 KB -