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Submission #477100

# Submission time Handle Problem Language Result Execution time Memory
477100 2021-09-30T12:42:17 Z khr03ae Circle selection (APIO18_circle_selection) C++14
7 / 100
 3000 ms 18876 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long i64;

const int MAX = 3e5 + 9;

struct Circle {
    i64 x, y, rad;
} C[MAX];

int sorted[MAX], par[MAX];
bool deleted[MAX];

bool cmp(int i, int j) {
    if (C[i].rad == C[j].rad) return i < j;
    return C[i].rad > C[j].rad;
}

bool intercept(int i, int j) {
    i64 dx = 1LL * C[i].x - 1LL * C[j].x;
    i64 dy = 1LL * C[i].y - 1LL * C[j].y;
    i64 dist2 = 1LL * dx * dx + 1LL * dy * dy;
    i64 rad2 = 1LL * (C[i].rad + C[j].rad) * (C[i].rad + C[j].rad);
    return dist2 <= rad2;
}

int main() {
    int N;
    scanf("%d", &N);
    for (int i = 0; i < N; ++i) {
        scanf("%lld%lld%lld", &C[i].x, &C[i].y, &C[i].rad);
    }
    
    // Initialize
    for (int i = 0; i < N; ++i) {
        sorted[i] = i;
        deleted[i] = false;
    }

    sort(sorted, sorted + N, cmp);
    
    for (int i = 0; i < N; ++i) {
        int u = sorted[i];
        if (deleted[u]) continue;
        for (int j = i + 1; j < N; ++j) {
            int v = sorted[j];
            if (deleted[v]) continue;
            if (intercept(u, v)) {
                par[v] = u;
                deleted[v] = true;
            }
        }
        par[u] = u;
        deleted[u] = true;
    }

    for (int i = 0; i < N; ++i) {
        printf("%d ", par[i] + 1);
    }
    puts("\n");
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     scanf("%d", &N);
      |     ~~~~~^~~~~~~~~~
circle_selection.cpp:32:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         scanf("%lld%lld%lld", &C[i].x, &C[i].y, &C[i].rad);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 312 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 716 KB Output is correct
20 Correct 3 ms 588 KB Output is correct
21 Correct 4 ms 588 KB Output is correct
22 Correct 60 ms 588 KB Output is correct
23 Correct 53 ms 600 KB Output is correct
24 Correct 53 ms 588 KB Output is correct
25 Correct 52 ms 588 KB Output is correct
26 Correct 59 ms 596 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 217 ms 18876 KB Output is correct
2 Correct 217 ms 18708 KB Output is correct
3 Correct 214 ms 18384 KB Output is correct
4 Correct 209 ms 18848 KB Output is correct
5 Execution timed out 3076 ms 14476 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Execution timed out 3076 ms 6524 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3089 ms 16804 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 312 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 716 KB Output is correct
20 Correct 3 ms 588 KB Output is correct
21 Correct 4 ms 588 KB Output is correct
22 Correct 60 ms 588 KB Output is correct
23 Correct 53 ms 600 KB Output is correct
24 Correct 53 ms 588 KB Output is correct
25 Correct 52 ms 588 KB Output is correct
26 Correct 59 ms 596 KB Output is correct
27 Correct 6 ms 972 KB Output is correct
28 Correct 7 ms 972 KB Output is correct
29 Correct 6 ms 972 KB Output is correct
30 Correct 244 ms 884 KB Output is correct
31 Correct 206 ms 844 KB Output is correct
32 Correct 219 ms 904 KB Output is correct
33 Correct 67 ms 7188 KB Output is correct
34 Correct 66 ms 7148 KB Output is correct
35 Correct 67 ms 7012 KB Output is correct
36 Execution timed out 3077 ms 6096 KB Time limit exceeded
37 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 312 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 716 KB Output is correct
20 Correct 3 ms 588 KB Output is correct
21 Correct 4 ms 588 KB Output is correct
22 Correct 60 ms 588 KB Output is correct
23 Correct 53 ms 600 KB Output is correct
24 Correct 53 ms 588 KB Output is correct
25 Correct 52 ms 588 KB Output is correct
26 Correct 59 ms 596 KB Output is correct
27 Correct 217 ms 18876 KB Output is correct
28 Correct 217 ms 18708 KB Output is correct
29 Correct 214 ms 18384 KB Output is correct
30 Correct 209 ms 18848 KB Output is correct
31 Execution timed out 3076 ms 14476 KB Time limit exceeded
32 Halted 0 ms 0 KB -