oj.uz

답안 #1083622

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1083622 2024-09-03T15:31:05 Z codexistent Mobile (BOI12_mobile) C++14
0 / 100
 692 ms 57240 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define db double
#define MAXN 1000005
#define FOR(i, a, b) for(ll i = a; i <= b; i++)
#define f first
#define s second

ll n;
db l;
vector<pair<db, db>> s;

bool overlap(pair<db, db> a, pair<db, db> b){ // does a overlap b vertex?
    db ad = (a.f - b.f) * (a.f - b.f) + a.s * a.s;
    db bd = b.s * b.s;

    return ad <= bd;
}

db overlap2(pair<db, db> a, pair<db, db> b){
    db x = (a.f * a.f + a.s * a.s - b.f * b.f - b.s * b.s) / (2 * (a.f - b.f));
    // cout << " HERE: " << x << endl;
    x = max((db)0, x);
    x = min(x, l);
    return min(sqrt((a.f - x) * (a.f - x) + a.s * a.s), sqrt((b.f - x) * (b.f - x) + b.s * b.s));
}

int main(){
    cin >> n >> l;
    FOR(i, 1, n){
        db x, y; cin >> x >> y;
        s.push_back({x, y});
    }
    sort(begin(s), end(s));

    vector<pair<db, db>> s2;
    ll prv = -1;
    FOR(i, 0, n - 1){
        if(prv == -1 || i == n - 1 || !(overlap(s[prv], s[i]) && overlap(s[i + 1], s[i]))){
            s2.push_back(s[i]);
            prv = i;
        }
    }

    db r = max(sqrt(s2[0].f * s2[0].f + s2[0].s * s2[0].s), sqrt((s2.back().f - l) * (s2.back().f - l) + s2.back().s * s2.back().s));
    // cout << "START PT IS " << (s2[0].f * s2[0].f + s2[0].s * s2[0].s) << endl;
    // cout << "END PT IS " << ((s2.back().f - l) * (s2.back().f - l) + s2.back().s * s2.back().s) << endl;
    FOR(i, 0, s2.size() - 2){
        r = max(r, overlap2(s2[i], s2[i + 1]));
    }

    cout << fixed << setprecision(6) << r;
}

Compilation message

mobile.cpp: In function 'int main()':
mobile.cpp:6:38: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<double, double> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 | #define FOR(i, a, b) for(ll i = a; i <= b; i++)
......
   49 |     FOR(i, 0, s2.size() - 2){
      |         ~~~~~~~~~~~~~~~~~~~           
mobile.cpp:49:5: note: in expansion of macro 'FOR'
   49 |     FOR(i, 0, s2.size() - 2){
      |     ^~~

Subtask #1
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 604 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 39 ms 4088 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 42 ms 5260 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 5308 KB Output is correct
2 Incorrect 50 ms 4708 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 63 ms 5312 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 66 ms 6460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 230 ms 24760 KB Output is correct
2 Incorrect 322 ms 28072 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 329 ms 28740 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 280 ms 39452 KB Output is correct
2 Incorrect 384 ms 43668 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 403 ms 44184 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 337 ms 41900 KB Output is correct
2 Incorrect 452 ms 46876 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 482 ms 47336 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 375 ms 44436 KB Output is correct
2 Incorrect 556 ms 49760 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 563 ms 50656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 496 ms 49304 KB Output is correct
2 Incorrect 692 ms 56212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 685 ms 57240 KB Output isn't correct
2 Halted 0 ms 0 KB -