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답안 #827892

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
827892 2023-08-16T21:44:59 Z EntityPlantt Mobile (BOI12_mobile) C++17
0 / 100
 1000 ms 131072 KB 
#define ONLINE_JUDGE
#include <cstdio>
#include <cmath>
#include <vector>
/*#include <windows.h>
const HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
inline void scta(const int &clr) { SetConsoleTextAttribute(handle, clr); }*/
using namespace std;
vector <pair <int, int>> points;
vector <pair <double, double>> intervals;
double radius;
int n, len, x, y, i;
double l, r = 2e9, m;
int main() {
    scanf("%d%d%d%d", &n, &len, &x, &y);
    points.push_back({x, abs(y)});
    while (--n) {
        scanf("%d%d", &x, &y);
        if (points.back().first == x) {
            if (y < 0) {
                points.back().second = -y;
            }
        }
        else points.push_back({x, y});
    }
    while (r - l > 1e-8) {
        m = (l + r) / 2.0;
        intervals.clear();
        intervals.push_back({0.0, len});
        /*scta(7);
        printf("l = %lf, r = %lf, m = %lf\n", l, r, m);*/
        for (auto &point : points) {
            x = point.first;
            radius = sqrt(m * m - double(point.second) * double(point.second));
            /*scta(15);
            printf("  Intervals =");
            scta(14);
            for (auto &in : intervals) {
                printf(" (%lf, %lf)", in.first, in.second);
            }
            scta(15);
            printf("\n  place = %d, radius = %lf\n", x, radius);*/
            for (i = intervals.size() - 1; i >= 0; i--) {
                if (x - radius <= intervals[i].first && intervals[i].second <= x + radius) {
                    // scta(10); printf("    Entire interval is contained\n");
                    intervals.erase(intervals.begin() + i);
                }
                else if (x + radius <= intervals[i].first || intervals[i].second <= x - radius) {
                    // scta(12); printf("    None of the interval is contained\n");
                }
                else if (x - radius <= intervals[i].first && x + radius <= intervals[i].second) {
                    // scta(9); printf("    The left part of the interval is contained\n");
                    intervals[i].first = x + radius;
                }
                else if (intervals[i].first <= x - radius && intervals[i].second <= x + radius) {
                    // scta(13); printf("    The right part of the interval is contained\n");
                    intervals[i].second = x - radius;
                }
                else {
                    // scta(11); printf("    The interval has to be split into two\n");
                    intervals.push_back({x + radius, intervals[i].second});
                    intervals[i].second = x - radius;
                }
            }
            if (intervals.empty()) break;
        }
        if (intervals.empty()) r = m; else l = m;
    }
    printf("%lf\n", l);
    return 0;
}

Compilation message

mobile.cpp: In function 'int main()':
mobile.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     scanf("%d%d%d%d", &n, &len, &x, &y);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mobile.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         scanf("%d%d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1066 ms 4416 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1054 ms 2468 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1045 ms 4540 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1075 ms 8592 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 115 ms 131072 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 119 ms 131072 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1090 ms 916 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 1356 KB Output is correct
2 Correct 16 ms 848 KB Output is correct
3 Runtime error 114 ms 131072 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #10
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1077 ms 928 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #11
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 42 ms 1356 KB Output is correct
2 Correct 17 ms 848 KB Output is correct
3 Runtime error 116 ms 131072 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #12
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1083 ms 4424 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #13
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1073 ms 436 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1077 ms 8664 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1067 ms 332 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #16
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1067 ms 8572 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #17
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1064 ms 328 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #18
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1075 ms 8564 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #19
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1068 ms 376 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #20
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1064 ms 8576 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #21
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1072 ms 332 KB Time limit exceeded
2 Halted 0 ms 0 KB -