#include <bits/stdc++.h>
using namespace std;
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define MP make_pair
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define MT make_tuple
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define pb emplace_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
#define INF 1000000005
#define LINF 1000000000000000005
#define MOD 1000000007
#define MAXN 200005
int n, k;
ii lr[MAXN];
vi events;
set<int> st;
map<int, int> mp;
int d[MAXN];
vi ans;
int v[MAXN * 4];
void update(int p, int x, int u, int lo, int hi) {
int mid = lo + hi >> 1;
if (lo == hi) {
v[u] = x;
return;
}
int lc = u * 2, rc = u * 2 + 1;
if (p <= mid) update(p, x, lc, lo, mid);
else update(p, x, rc, mid + 1, hi);
v[u] = max(v[lc], v[rc]);
}
void update(int p, int x) {
update(p, x, 1, 0, 2 * n);
}
int query(int s, int e, int u, int lo, int hi) {
if (lo >= s && hi <= e) {
return v[u];
}
int mid = lo + hi >> 1;
int lc = u * 2, rc = u * 2 + 1;
if (e <= mid) return query(s, e, lc, lo, mid);
else if (s > mid) return query(s, e, rc, mid + 1, hi);
else return max(query(s, e, lc, lo, mid), query(s, e, rc, mid + 1, hi));
}
int query(int s, int e) {
return query(s, e, 1, 0, 2 * n);
}
int main() {
scanf("%d%d", &n, &k);
REP (i, 0, n) {
scanf("%d%d", &lr[i].FI, &lr[i].SE);
st.insert(lr[i].FI);
st.insert(lr[i].SE);
}
int ptr = 0;
for (auto i : st) {
mp[i] = ptr++;
}
REP (i, 0, n) {
lr[i].FI = mp[lr[i].FI];
lr[i].SE = mp[lr[i].SE];
}
REP (i, 0, 1 << n) {
if (__builtin_popcount(i) != k) continue;
vector<iii> tmp;
REP (j, 0, n) {
if (i & (1 << j)) {
tmp.pb(lr[j].FI, lr[j].SE, j);
}
}
sort(ALL(tmp));
bool pos = 1;
REP (j, 1, tmp.size()) {
auto [l, r, id] = tmp[j];
auto [pl, pr, pid] = tmp[j - 1];
if (pr > l) {
pos = 0;
break;
}
}
if (pos) {
vi res;
for (auto [l, r, id] : tmp) {
res.pb(id + 1);
}
if (ans.empty()) {
ans = res;
} else {
mnto(ans, res);
}
}
}
if (ans.empty()) {
printf("-1\n");
} else {
for (int i : ans) {
printf("%d\n", i);
}
}
return 0;
}
/*
4 2
1 4
3 5
4 9
7 10
12 3
1 4
1 8
1 3
1 2
1 4
3 8
3 5
3 9
6 11
6 10
6 12
6 7
6 1
1 7
2 5
2 4
4 8
4 7
8 9
6 4
1 3
1 2
2 4
4 5
5 6
6 7
*/
Compilation message
worst_reporter2.cpp: In function 'void update(int, int, int, int, int)':
worst_reporter2.cpp:40:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
40 | int mid = lo + hi >> 1;
| ~~~^~~~
worst_reporter2.cpp: In function 'int query(int, int, int, int, int)':
worst_reporter2.cpp:57:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
57 | int mid = lo + hi >> 1;
| ~~~^~~~
worst_reporter2.cpp: In function 'int main()':
worst_reporter2.cpp:8:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<int, int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | #define REP(i, s, e) for (int i = s; i < e; i++)
......
92 | REP (j, 1, tmp.size()) {
| ~~~~~~~~~~~~~~~~
worst_reporter2.cpp:92:3: note: in expansion of macro 'REP'
92 | REP (j, 1, tmp.size()) {
| ^~~
worst_reporter2.cpp:68:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
68 | scanf("%d%d", &n, &k);
| ~~~~~^~~~~~~~~~~~~~~~
worst_reporter2.cpp:70:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
70 | scanf("%d%d", &lr[i].FI, &lr[i].SE);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
