#include <algorithm>
#include <cstdio>
using namespace std;
struct Stake {
int x, y, id;
bool operator < (const Stake& s) const {
return x != s.x ? x < s.x : y < s.y;
}
};
int N;
Stake s[901];
int main() {
scanf("%d", &N);
for (int i = 0; i < 3 * N; ++i) {
scanf("%d%d", &s[i].x, &s[i].y);
s[i].id = i + 1;
}
sort(s, s + 3 * N);
for (int i = 0; i < N; ++i)
printf("%d %d %d\n", s[3*i].id, s[3*i+1].id, s[3*i+2].id);
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
1096 KB |
Output is correct |
2 |
Correct |
0 ms |
1096 KB |
Output is correct |
3 |
Correct |
0 ms |
1096 KB |
Output is correct |
4 |
Correct |
0 ms |
1096 KB |
Output is correct |
5 |
Correct |
0 ms |
1096 KB |
Output is correct |
6 |
Correct |
0 ms |
1096 KB |
Output is correct |
7 |
Correct |
0 ms |
1096 KB |
Output is correct |
8 |
Correct |
0 ms |
1096 KB |
Output is correct |
9 |
Correct |
0 ms |
1096 KB |
Output is correct |
10 |
Correct |
0 ms |
1096 KB |
Output is correct |
11 |
Correct |
0 ms |
1096 KB |
Output is correct |
12 |
Correct |
0 ms |
1096 KB |
Output is correct |
13 |
Correct |
0 ms |
1096 KB |
Output is correct |
14 |
Correct |
0 ms |
1096 KB |
Output is correct |
15 |
Correct |
0 ms |
1096 KB |
Output is correct |
16 |
Correct |
0 ms |
1096 KB |
Output is correct |
17 |
Correct |
0 ms |
1096 KB |
Output is correct |
18 |
Correct |
0 ms |
1096 KB |
Output is correct |
19 |
Correct |
0 ms |
1096 KB |
Output is correct |
20 |
Correct |
0 ms |
1096 KB |
Output is correct |