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답안 #725318

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
725318 2023-04-17T08:43:08 Z MohammadAghil Event Hopping 2 (JOI21_event2) C++17
100 / 100
 368 ms 42392 KB 
#include <bits/stdc++.h>
using namespace std;
#define rep(i,l,r) for(int i = (l); i < (r); i++)
#define per(i,r,l) for(int i = (r); i >= (l); i--)
#define all(x) begin(x), end(x)
#define sz(x) (int)size(x)
#define pb push_back
#define ff first
#define ss second
typedef long long ll;
typedef pair<int, int> pp;

void dbg(){
     cerr << endl;
}
template<typename H, typename... T> void dbg(H h, T... t){
     cerr << h << ", ";
     dbg(t...);
}

void IOS(){
     cin.tie(0) -> sync_with_stdio(0);
     #ifndef ONLINE_JUDGE
          // freopen("inp.txt", "r", stdin);
          // freopen("out.txt", "w", stdout);
          #define er(...) cerr << __LINE__ << " <" << #__VA_ARGS__ << ">: ", dbg(__VA_ARGS__)
     #else
          #define er(...) 0
     #endif
}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll mod = 1e9 + 7, mod2 = 1e9 + 9, maxn = 2e5 + 5, lg = 21, inf = ll(1e9) + 5;

ll pw(ll a, ll b){
     if(b == 0) return 1;
     ll k = pw(a, b>>1);
     return k*k*(b&1ll?a:1);
}

vector<int> st[maxn], en[maxn];
int nxt[maxn][lg];
int suf[maxn];
pp p[maxn];

int get(int l, int r){
     if(p[suf[l]].ss > r) return 0;
     int cr = suf[l];
     int cnt = 1;
     per(i,lg-1,0){
          if(p[nxt[cr][i]].ss <= r){
               cr = nxt[cr][i];
               cnt += 1<<i;
          }
     }
     return cnt;
}

int main(){ IOS();  
     int n, k; cin >> n >> k;
     map<int, int> mp;
     rep(i,0,n){
          cin >> p[i].ff >> p[i].ss;
          mp[p[i].ff] = mp[p[i].ss] = 0;
     }
     int m = 0;
     for(auto&c: mp) c.ss = m++;
     p[n] = {m, m};
     rep(i,0,n){
          p[i] = {mp[p[i].ff], mp[p[i].ss]};
          st[p[i].ff].pb(i);
          en[p[i].ss].pb(i);
     }
     pp mn = {m, n};
     rep(i,0,lg) nxt[n][i] = n;
     per(i,m,0){
          for(int id: st[i]){
               mn = min(mn, {p[id].ss, id});
          }
          for(int id: en[i]){
               nxt[id][0] = mn.ss;
               rep(j,1,lg) nxt[id][j] = nxt[nxt[id][j-1]][j-1];
          }
     }
     suf[m] = n;
     per(i,m-1,0){
          suf[i] = suf[i+1];
          for(int id: st[i]){
               if(p[suf[i]].ss > p[id].ss){
                    suf[i] = id;
               }
          }
     }
     int cr = get(0, m-1);
     if(cr < k) return cout << -1 << '\n', 0;
     set<pp> s; 
     vector<int> ans;
     rep(i,0,n){
          int prv, nxt;
          auto it = s.lower_bound(pp(p[i].ss, -1));
          if(it == begin(s)) prv = 0;
          else{
               if(prev(it)->ss > p[i].ff) continue;
               prv = prev(it)->ss;
          }
          auto it2 = s.lower_bound(pp(p[i].ff, -1));
          if(it2 == end(s)) nxt = m-1;
          else{
               if(it2->ff < p[i].ss) continue;
               nxt = it2->ff;
          }
          int kp = cr - get(prv, nxt) + get(prv, p[i].ff) + get(p[i].ss, nxt) + 1;
          if(kp >= k){
               cr = kp;
               s.insert(p[i]);
               ans.pb(i);
          }
     }
     rep(i,0,k) cout << ans[i] + 1 << '\n';
     return 0;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9700 KB Output is correct
4 Correct 147 ms 42392 KB Output is correct
5 Correct 143 ms 42316 KB Output is correct
6 Correct 143 ms 42292 KB Output is correct
7 Correct 146 ms 42228 KB Output is correct
8 Correct 144 ms 42320 KB Output is correct
9 Correct 154 ms 42356 KB Output is correct
10 Correct 146 ms 42324 KB Output is correct
11 Correct 140 ms 42164 KB Output is correct
12 Correct 124 ms 40272 KB Output is correct
13 Correct 133 ms 40220 KB Output is correct
14 Correct 140 ms 40312 KB Output is correct
15 Correct 127 ms 40264 KB Output is correct
16 Correct 110 ms 37760 KB Output is correct
17 Correct 125 ms 37752 KB Output is correct
18 Correct 109 ms 37656 KB Output is correct
19 Correct 107 ms 37068 KB Output is correct
20 Correct 112 ms 37124 KB Output is correct
21 Correct 120 ms 37188 KB Output is correct
22 Correct 122 ms 37004 KB Output is correct
23 Correct 122 ms 37096 KB Output is correct
24 Correct 143 ms 37076 KB Output is correct
25 Correct 142 ms 37068 KB Output is correct
26 Correct 143 ms 37000 KB Output is correct
27 Correct 143 ms 37012 KB Output is correct
28 Correct 89 ms 37020 KB Output is correct
29 Correct 92 ms 37044 KB Output is correct
30 Correct 96 ms 37064 KB Output is correct
31 Correct 108 ms 37080 KB Output is correct
32 Correct 118 ms 36992 KB Output is correct
33 Correct 166 ms 37096 KB Output is correct
34 Correct 128 ms 40320 KB Output is correct
35 Correct 122 ms 40032 KB Output is correct
36 Correct 129 ms 40008 KB Output is correct
37 Correct 148 ms 39936 KB Output is correct
38 Correct 141 ms 39856 KB Output is correct
39 Correct 152 ms 39816 KB Output is correct
40 Correct 147 ms 39808 KB Output is correct
41 Correct 139 ms 39876 KB Output is correct
42 Correct 125 ms 37084 KB Output is correct
43 Correct 162 ms 39832 KB Output is correct
44 Correct 122 ms 39688 KB Output is correct
45 Correct 128 ms 39592 KB Output is correct
46 Correct 127 ms 39400 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9720 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 7 ms 9684 KB Output is correct
6 Correct 6 ms 9724 KB Output is correct
7 Correct 6 ms 9684 KB Output is correct
8 Correct 5 ms 9728 KB Output is correct
9 Correct 7 ms 9684 KB Output is correct
10 Correct 6 ms 9684 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 6 ms 9684 KB Output is correct
13 Correct 5 ms 9684 KB Output is correct
14 Correct 5 ms 9748 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 6 ms 9684 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 5 ms 9732 KB Output is correct
22 Correct 6 ms 9684 KB Output is correct
23 Correct 6 ms 9684 KB Output is correct
24 Correct 5 ms 9684 KB Output is correct
25 Correct 6 ms 9636 KB Output is correct
26 Correct 5 ms 9724 KB Output is correct
27 Correct 5 ms 9728 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9720 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 7 ms 9684 KB Output is correct
6 Correct 6 ms 9724 KB Output is correct
7 Correct 6 ms 9684 KB Output is correct
8 Correct 5 ms 9728 KB Output is correct
9 Correct 7 ms 9684 KB Output is correct
10 Correct 6 ms 9684 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 6 ms 9684 KB Output is correct
13 Correct 5 ms 9684 KB Output is correct
14 Correct 5 ms 9748 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 5 ms 9684 KB Output is correct
18 Correct 5 ms 9684 KB Output is correct
19 Correct 6 ms 9684 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 5 ms 9732 KB Output is correct
22 Correct 6 ms 9684 KB Output is correct
23 Correct 6 ms 9684 KB Output is correct
24 Correct 5 ms 9684 KB Output is correct
25 Correct 6 ms 9636 KB Output is correct
26 Correct 5 ms 9724 KB Output is correct
27 Correct 5 ms 9728 KB Output is correct
28 Correct 9 ms 10452 KB Output is correct
29 Correct 9 ms 10508 KB Output is correct
30 Correct 8 ms 10468 KB Output is correct
31 Correct 8 ms 10452 KB Output is correct
32 Correct 8 ms 10452 KB Output is correct
33 Correct 9 ms 10468 KB Output is correct
34 Correct 8 ms 10504 KB Output is correct
35 Correct 10 ms 10636 KB Output is correct
36 Correct 10 ms 10632 KB Output is correct
37 Correct 10 ms 10580 KB Output is correct
38 Correct 10 ms 10452 KB Output is correct
39 Correct 10 ms 10580 KB Output is correct
40 Correct 9 ms 10580 KB Output is correct
41 Correct 10 ms 10580 KB Output is correct
42 Correct 10 ms 10452 KB Output is correct
43 Correct 10 ms 10580 KB Output is correct
44 Correct 10 ms 10580 KB Output is correct
45 Correct 13 ms 10604 KB Output is correct
46 Correct 9 ms 10508 KB Output is correct
47 Correct 9 ms 10452 KB Output is correct
48 Correct 9 ms 10580 KB Output is correct
49 Correct 9 ms 10508 KB Output is correct
50 Correct 9 ms 10504 KB Output is correct
51 Correct 9 ms 10452 KB Output is correct
52 Correct 8 ms 10452 KB Output is correct
53 Correct 9 ms 10472 KB Output is correct
54 Correct 9 ms 10512 KB Output is correct
55 Correct 8 ms 10580 KB Output is correct
56 Correct 8 ms 10580 KB Output is correct
57 Correct 8 ms 10508 KB Output is correct
58 Correct 9 ms 10580 KB Output is correct
59 Correct 8 ms 10504 KB Output is correct
60 Correct 8 ms 10580 KB Output is correct
61 Correct 8 ms 10580 KB Output is correct
62 Correct 8 ms 10580 KB Output is correct
63 Correct 8 ms 10580 KB Output is correct
64 Correct 8 ms 10324 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9700 KB Output is correct
4 Correct 147 ms 42392 KB Output is correct
5 Correct 143 ms 42316 KB Output is correct
6 Correct 143 ms 42292 KB Output is correct
7 Correct 146 ms 42228 KB Output is correct
8 Correct 144 ms 42320 KB Output is correct
9 Correct 154 ms 42356 KB Output is correct
10 Correct 146 ms 42324 KB Output is correct
11 Correct 140 ms 42164 KB Output is correct
12 Correct 124 ms 40272 KB Output is correct
13 Correct 133 ms 40220 KB Output is correct
14 Correct 140 ms 40312 KB Output is correct
15 Correct 127 ms 40264 KB Output is correct
16 Correct 110 ms 37760 KB Output is correct
17 Correct 125 ms 37752 KB Output is correct
18 Correct 109 ms 37656 KB Output is correct
19 Correct 107 ms 37068 KB Output is correct
20 Correct 112 ms 37124 KB Output is correct
21 Correct 120 ms 37188 KB Output is correct
22 Correct 122 ms 37004 KB Output is correct
23 Correct 122 ms 37096 KB Output is correct
24 Correct 143 ms 37076 KB Output is correct
25 Correct 142 ms 37068 KB Output is correct
26 Correct 143 ms 37000 KB Output is correct
27 Correct 143 ms 37012 KB Output is correct
28 Correct 89 ms 37020 KB Output is correct
29 Correct 92 ms 37044 KB Output is correct
30 Correct 96 ms 37064 KB Output is correct
31 Correct 108 ms 37080 KB Output is correct
32 Correct 118 ms 36992 KB Output is correct
33 Correct 166 ms 37096 KB Output is correct
34 Correct 128 ms 40320 KB Output is correct
35 Correct 122 ms 40032 KB Output is correct
36 Correct 129 ms 40008 KB Output is correct
37 Correct 148 ms 39936 KB Output is correct
38 Correct 141 ms 39856 KB Output is correct
39 Correct 152 ms 39816 KB Output is correct
40 Correct 147 ms 39808 KB Output is correct
41 Correct 139 ms 39876 KB Output is correct
42 Correct 125 ms 37084 KB Output is correct
43 Correct 162 ms 39832 KB Output is correct
44 Correct 122 ms 39688 KB Output is correct
45 Correct 128 ms 39592 KB Output is correct
46 Correct 127 ms 39400 KB Output is correct
47 Correct 5 ms 9684 KB Output is correct
48 Correct 6 ms 9684 KB Output is correct
49 Correct 6 ms 9720 KB Output is correct
50 Correct 6 ms 9684 KB Output is correct
51 Correct 7 ms 9684 KB Output is correct
52 Correct 6 ms 9724 KB Output is correct
53 Correct 6 ms 9684 KB Output is correct
54 Correct 5 ms 9728 KB Output is correct
55 Correct 7 ms 9684 KB Output is correct
56 Correct 6 ms 9684 KB Output is correct
57 Correct 6 ms 9728 KB Output is correct
58 Correct 6 ms 9684 KB Output is correct
59 Correct 5 ms 9684 KB Output is correct
60 Correct 5 ms 9748 KB Output is correct
61 Correct 5 ms 9684 KB Output is correct
62 Correct 5 ms 9684 KB Output is correct
63 Correct 5 ms 9684 KB Output is correct
64 Correct 5 ms 9684 KB Output is correct
65 Correct 6 ms 9684 KB Output is correct
66 Correct 5 ms 9684 KB Output is correct
67 Correct 5 ms 9732 KB Output is correct
68 Correct 6 ms 9684 KB Output is correct
69 Correct 6 ms 9684 KB Output is correct
70 Correct 5 ms 9684 KB Output is correct
71 Correct 6 ms 9636 KB Output is correct
72 Correct 5 ms 9724 KB Output is correct
73 Correct 5 ms 9728 KB Output is correct
74 Correct 9 ms 10452 KB Output is correct
75 Correct 9 ms 10508 KB Output is correct
76 Correct 8 ms 10468 KB Output is correct
77 Correct 8 ms 10452 KB Output is correct
78 Correct 8 ms 10452 KB Output is correct
79 Correct 9 ms 10468 KB Output is correct
80 Correct 8 ms 10504 KB Output is correct
81 Correct 10 ms 10636 KB Output is correct
82 Correct 10 ms 10632 KB Output is correct
83 Correct 10 ms 10580 KB Output is correct
84 Correct 10 ms 10452 KB Output is correct
85 Correct 10 ms 10580 KB Output is correct
86 Correct 9 ms 10580 KB Output is correct
87 Correct 10 ms 10580 KB Output is correct
88 Correct 10 ms 10452 KB Output is correct
89 Correct 10 ms 10580 KB Output is correct
90 Correct 10 ms 10580 KB Output is correct
91 Correct 13 ms 10604 KB Output is correct
92 Correct 9 ms 10508 KB Output is correct
93 Correct 9 ms 10452 KB Output is correct
94 Correct 9 ms 10580 KB Output is correct
95 Correct 9 ms 10508 KB Output is correct
96 Correct 9 ms 10504 KB Output is correct
97 Correct 9 ms 10452 KB Output is correct
98 Correct 8 ms 10452 KB Output is correct
99 Correct 9 ms 10472 KB Output is correct
100 Correct 9 ms 10512 KB Output is correct
101 Correct 8 ms 10580 KB Output is correct
102 Correct 8 ms 10580 KB Output is correct
103 Correct 8 ms 10508 KB Output is correct
104 Correct 9 ms 10580 KB Output is correct
105 Correct 8 ms 10504 KB Output is correct
106 Correct 8 ms 10580 KB Output is correct
107 Correct 8 ms 10580 KB Output is correct
108 Correct 8 ms 10580 KB Output is correct
109 Correct 8 ms 10580 KB Output is correct
110 Correct 8 ms 10324 KB Output is correct
111 Correct 297 ms 37004 KB Output is correct
112 Correct 288 ms 37116 KB Output is correct
113 Correct 265 ms 37008 KB Output is correct
114 Correct 245 ms 37056 KB Output is correct
115 Correct 284 ms 37096 KB Output is correct
116 Correct 271 ms 37096 KB Output is correct
117 Correct 314 ms 37044 KB Output is correct
118 Correct 361 ms 42356 KB Output is correct
119 Correct 333 ms 42204 KB Output is correct
120 Correct 316 ms 40172 KB Output is correct
121 Correct 246 ms 37212 KB Output is correct
122 Correct 321 ms 40244 KB Output is correct
123 Correct 289 ms 40196 KB Output is correct
124 Correct 319 ms 40096 KB Output is correct
125 Correct 217 ms 37204 KB Output is correct
126 Correct 346 ms 37936 KB Output is correct
127 Correct 361 ms 37844 KB Output is correct
128 Correct 367 ms 37680 KB Output is correct
129 Correct 368 ms 37028 KB Output is correct
130 Correct 284 ms 37192 KB Output is correct
131 Correct 281 ms 37232 KB Output is correct
132 Correct 274 ms 37100 KB Output is correct
133 Correct 276 ms 37084 KB Output is correct
134 Correct 279 ms 37024 KB Output is correct
135 Correct 261 ms 37068 KB Output is correct
136 Correct 232 ms 37032 KB Output is correct
137 Correct 244 ms 37084 KB Output is correct
138 Correct 298 ms 37068 KB Output is correct
139 Correct 278 ms 37016 KB Output is correct
140 Correct 251 ms 36988 KB Output is correct
141 Correct 243 ms 37192 KB Output is correct
142 Correct 151 ms 37708 KB Output is correct
143 Correct 149 ms 37648 KB Output is correct
144 Correct 175 ms 37680 KB Output is correct
145 Correct 129 ms 37680 KB Output is correct
146 Correct 125 ms 37620 KB Output is correct
147 Correct 141 ms 37580 KB Output is correct
148 Correct 136 ms 37572 KB Output is correct
149 Correct 127 ms 37628 KB Output is correct
150 Correct 131 ms 37624 KB Output is correct
151 Correct 144 ms 37500 KB Output is correct
152 Correct 72 ms 31948 KB Output is correct
153 Correct 127 ms 37600 KB Output is correct
154 Correct 132 ms 37600 KB Output is correct
155 Correct 122 ms 37668 KB Output is correct
156 Correct 168 ms 37636 KB Output is correct
157 Correct 127 ms 37628 KB Output is correct
158 Correct 130 ms 37564 KB Output is correct
159 Correct 132 ms 37572 KB Output is correct
160 Correct 76 ms 32016 KB Output is correct
161 Correct 244 ms 37288 KB Output is correct
162 Correct 279 ms 37400 KB Output is correct
163 Correct 242 ms 37392 KB Output is correct
164 Correct 252 ms 37288 KB Output is correct
165 Correct 257 ms 37376 KB Output is correct
166 Correct 102 ms 37020 KB Output is correct
167 Correct 125 ms 39760 KB Output is correct
168 Correct 117 ms 39628 KB Output is correct
169 Correct 118 ms 39608 KB Output is correct
170 Correct 133 ms 39444 KB Output is correct
171 Correct 128 ms 39228 KB Output is correct
172 Correct 146 ms 39904 KB Output is correct
173 Correct 259 ms 34760 KB Output is correct
174 Correct 255 ms 34812 KB Output is correct
175 Correct 277 ms 34744 KB Output is correct
176 Correct 276 ms 34348 KB Output is correct