oj.uz

Submission #417196

# Submission time Handle Problem Language Result Execution time Memory
417196 2021-06-03T12:50:53 Z tqbfjotld Event Hopping 2 (JOI21_event2) C++14
100 / 100
 166 ms 14668 KB 
#include <bits/stdc++.h>
using namespace std;

int decomp[100005][20];
vector<pair<int,int> > stuff;
vector<pair<pair<int,int>,int> > sorted;
int pos[100005];

int point(int cur, int amt){
    for (int x = 0; x<20; x++){
        if (amt&(1<<x)){
            cur = decomp[cur][x];
        }
    }
    return cur;
}

int main(){
    int n,k;
    scanf("%d%d",&n,&k);
    for (int x = 0; x<n; x++){
        int a,b;
        scanf("%d%d",&a,&b);
        stuff.push_back({a,b});
        sorted.push_back({{a,b},x});
    }
    sorted.push_back({{1000000000,1000000001},n});
    sort(sorted.begin(),sorted.end());
    decomp[n][0] = n+1;
    decomp[n+1][0] = n+1;
    for (int x = n-1; x>=0; x--){
        decomp[x][0] = lower_bound(sorted.begin(),sorted.end(),make_pair(make_pair(sorted[x].first.second,-1),-1))-sorted.begin();
        decomp[x][0] = min(decomp[x][0],decomp[x+1][0]);
    }
    for (int x = 1; x<20; x++){
        for (int y = 0; y<=n+1; y++){
            decomp[y][x] = decomp[decomp[y][x-1]][x-1];
        }
    }
    if (point(0,k)>n){
        printf("-1");
        return 0;
    }
    for (int x = 0; x<n; x++){
        pos[sorted[x].second]=x;
    }
    vector<int> ans;
    set<pair<int,int> > rem;
    int curans = 0;
    int cur = 0;
    for (int y = 19; y>=0; y--){
        if (decomp[cur][y]<=n){
            cur = decomp[cur][y];
            curans += (1<<y);
        }
    }
    rem.insert({0,n});
    for (int x = 0; x<n; x++){
        if (ans.size()==k) break;
       // for (auto x : rem) printf("(%d,%d) ",x);
       // printf("\n");
        auto it = rem.lower_bound({pos[x]+1,-1});
        if (it==rem.begin()) continue;
        it--;
      //  printf("cur interval = %d, %d\n",(*it));
      //  printf("also %d %d\n",sorted[(*it).first].first.first,sorted[(*it).second].first.first);
        if (sorted[(*it).first].first.first>stuff[x].first || sorted[(*it).second].first.first<stuff[x].second) continue;
      //  printf("hi\n");
        int st = (*it).first;
        int en = (*it).second;
        int ans1 = 0;
        int cur = st;
        for (int y = 19; y>=0; y--){
            if (decomp[cur][y]<=pos[x]){
                cur = decomp[cur][y];
                ans1 += (1<<y);
            }
        }
        int ans2 = 0;
        int tt = lower_bound(sorted.begin(),sorted.end(),make_pair(make_pair(stuff[x].second,-1),-1))-sorted.begin();
        cur = tt;
        for (int y = 19; y>=0; y--){
            if (decomp[cur][y]<=en){
                cur = decomp[cur][y];
                ans2 += (1<<y);
            }
        }
        int ans3 = 0;
        cur = st;
        for (int y = 19; y>=0; y--){
            if (decomp[cur][y]<=en){
                cur = decomp[cur][y];
                ans3 += (1<<y);
            }
        }
      //  printf("ans1: %d, ans2: %d\n",ans1,ans2);
        if (curans-ans3+ans1+ans2+1+ans.size()>=k){
            rem.erase(it);
            if (pos[x]>st)rem.insert({st,pos[x]});
            if (en>tt)rem.insert({tt,en});
            ans.push_back(x);
            curans += ans1+ans2-ans3;
        }
    }
    for (int x  : ans){
        printf("%d\n",x+1);
    }
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:59:23: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   59 |         if (ans.size()==k) break;
      |             ~~~~~~~~~~^~~
event2.cpp:97:47: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   97 |         if (curans-ans3+ans1+ans2+1+ans.size()>=k){
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
event2.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |     scanf("%d%d",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~
event2.cpp:23:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         scanf("%d%d",&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 93 ms 11884 KB Output is correct
5 Correct 91 ms 13536 KB Output is correct
6 Correct 94 ms 13632 KB Output is correct
7 Correct 84 ms 13404 KB Output is correct
8 Correct 95 ms 13668 KB Output is correct
9 Correct 92 ms 13548 KB Output is correct
10 Correct 89 ms 13600 KB Output is correct
11 Correct 87 ms 13412 KB Output is correct
12 Correct 81 ms 12992 KB Output is correct
13 Correct 80 ms 13104 KB Output is correct
14 Correct 79 ms 13040 KB Output is correct
15 Correct 74 ms 13128 KB Output is correct
16 Correct 65 ms 12544 KB Output is correct
17 Correct 66 ms 12460 KB Output is correct
18 Correct 64 ms 12548 KB Output is correct
19 Correct 61 ms 12608 KB Output is correct
20 Correct 57 ms 12532 KB Output is correct
21 Correct 55 ms 12496 KB Output is correct
22 Correct 58 ms 12520 KB Output is correct
23 Correct 57 ms 12480 KB Output is correct
24 Correct 56 ms 12528 KB Output is correct
25 Correct 59 ms 12448 KB Output is correct
26 Correct 58 ms 12476 KB Output is correct
27 Correct 58 ms 12480 KB Output is correct
28 Correct 53 ms 12100 KB Output is correct
29 Correct 56 ms 12084 KB Output is correct
30 Correct 54 ms 12068 KB Output is correct
31 Correct 55 ms 12096 KB Output is correct
32 Correct 55 ms 12084 KB Output is correct
33 Correct 64 ms 12116 KB Output is correct
34 Correct 77 ms 12904 KB Output is correct
35 Correct 64 ms 12732 KB Output is correct
36 Correct 59 ms 12564 KB Output is correct
37 Correct 78 ms 13044 KB Output is correct
38 Correct 77 ms 13108 KB Output is correct
39 Correct 76 ms 13040 KB Output is correct
40 Correct 79 ms 13048 KB Output is correct
41 Correct 74 ms 12992 KB Output is correct
42 Correct 54 ms 12140 KB Output is correct
43 Correct 79 ms 12996 KB Output is correct
44 Correct 80 ms 12992 KB Output is correct
45 Correct 81 ms 12988 KB Output is correct
46 Correct 78 ms 13016 KB Output is correct

Subtask #2
1.0 / 1.0

# 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 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 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 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct

Subtask #3
31.0 / 31.0

# 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 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 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 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct
28 Correct 2 ms 588 KB Output is correct
29 Correct 2 ms 588 KB Output is correct
30 Correct 2 ms 588 KB Output is correct
31 Correct 2 ms 588 KB Output is correct
32 Correct 2 ms 588 KB Output is correct
33 Correct 2 ms 588 KB Output is correct
34 Correct 2 ms 588 KB Output is correct
35 Correct 4 ms 588 KB Output is correct
36 Correct 4 ms 588 KB Output is correct
37 Correct 3 ms 588 KB Output is correct
38 Correct 2 ms 588 KB Output is correct
39 Correct 4 ms 588 KB Output is correct
40 Correct 4 ms 588 KB Output is correct
41 Correct 3 ms 588 KB Output is correct
42 Correct 2 ms 588 KB Output is correct
43 Correct 3 ms 588 KB Output is correct
44 Correct 3 ms 716 KB Output is correct
45 Correct 3 ms 656 KB Output is correct
46 Correct 2 ms 716 KB Output is correct
47 Correct 3 ms 716 KB Output is correct
48 Correct 2 ms 716 KB Output is correct
49 Correct 2 ms 716 KB Output is correct
50 Correct 2 ms 716 KB Output is correct
51 Correct 2 ms 660 KB Output is correct
52 Correct 3 ms 716 KB Output is correct
53 Correct 2 ms 716 KB Output is correct
54 Correct 2 ms 716 KB Output is correct
55 Correct 3 ms 740 KB Output is correct
56 Correct 3 ms 708 KB Output is correct
57 Correct 3 ms 716 KB Output is correct
58 Correct 3 ms 716 KB Output is correct
59 Correct 3 ms 716 KB Output is correct
60 Correct 3 ms 716 KB Output is correct
61 Correct 5 ms 716 KB Output is correct
62 Correct 3 ms 716 KB Output is correct
63 Correct 3 ms 716 KB Output is correct
64 Correct 2 ms 716 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 93 ms 11884 KB Output is correct
5 Correct 91 ms 13536 KB Output is correct
6 Correct 94 ms 13632 KB Output is correct
7 Correct 84 ms 13404 KB Output is correct
8 Correct 95 ms 13668 KB Output is correct
9 Correct 92 ms 13548 KB Output is correct
10 Correct 89 ms 13600 KB Output is correct
11 Correct 87 ms 13412 KB Output is correct
12 Correct 81 ms 12992 KB Output is correct
13 Correct 80 ms 13104 KB Output is correct
14 Correct 79 ms 13040 KB Output is correct
15 Correct 74 ms 13128 KB Output is correct
16 Correct 65 ms 12544 KB Output is correct
17 Correct 66 ms 12460 KB Output is correct
18 Correct 64 ms 12548 KB Output is correct
19 Correct 61 ms 12608 KB Output is correct
20 Correct 57 ms 12532 KB Output is correct
21 Correct 55 ms 12496 KB Output is correct
22 Correct 58 ms 12520 KB Output is correct
23 Correct 57 ms 12480 KB Output is correct
24 Correct 56 ms 12528 KB Output is correct
25 Correct 59 ms 12448 KB Output is correct
26 Correct 58 ms 12476 KB Output is correct
27 Correct 58 ms 12480 KB Output is correct
28 Correct 53 ms 12100 KB Output is correct
29 Correct 56 ms 12084 KB Output is correct
30 Correct 54 ms 12068 KB Output is correct
31 Correct 55 ms 12096 KB Output is correct
32 Correct 55 ms 12084 KB Output is correct
33 Correct 64 ms 12116 KB Output is correct
34 Correct 77 ms 12904 KB Output is correct
35 Correct 64 ms 12732 KB Output is correct
36 Correct 59 ms 12564 KB Output is correct
37 Correct 78 ms 13044 KB Output is correct
38 Correct 77 ms 13108 KB Output is correct
39 Correct 76 ms 13040 KB Output is correct
40 Correct 79 ms 13048 KB Output is correct
41 Correct 74 ms 12992 KB Output is correct
42 Correct 54 ms 12140 KB Output is correct
43 Correct 79 ms 12996 KB Output is correct
44 Correct 80 ms 12992 KB Output is correct
45 Correct 81 ms 12988 KB Output is correct
46 Correct 78 ms 13016 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 0 ms 204 KB Output is correct
52 Correct 0 ms 204 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 0 ms 204 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 1 ms 204 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 204 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 1 ms 204 KB Output is correct
67 Correct 1 ms 204 KB Output is correct
68 Correct 1 ms 204 KB Output is correct
69 Correct 0 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 0 ms 204 KB Output is correct
74 Correct 2 ms 588 KB Output is correct
75 Correct 2 ms 588 KB Output is correct
76 Correct 2 ms 588 KB Output is correct
77 Correct 2 ms 588 KB Output is correct
78 Correct 2 ms 588 KB Output is correct
79 Correct 2 ms 588 KB Output is correct
80 Correct 2 ms 588 KB Output is correct
81 Correct 4 ms 588 KB Output is correct
82 Correct 4 ms 588 KB Output is correct
83 Correct 3 ms 588 KB Output is correct
84 Correct 2 ms 588 KB Output is correct
85 Correct 4 ms 588 KB Output is correct
86 Correct 4 ms 588 KB Output is correct
87 Correct 3 ms 588 KB Output is correct
88 Correct 2 ms 588 KB Output is correct
89 Correct 3 ms 588 KB Output is correct
90 Correct 3 ms 716 KB Output is correct
91 Correct 3 ms 656 KB Output is correct
92 Correct 2 ms 716 KB Output is correct
93 Correct 3 ms 716 KB Output is correct
94 Correct 2 ms 716 KB Output is correct
95 Correct 2 ms 716 KB Output is correct
96 Correct 2 ms 716 KB Output is correct
97 Correct 2 ms 660 KB Output is correct
98 Correct 3 ms 716 KB Output is correct
99 Correct 2 ms 716 KB Output is correct
100 Correct 2 ms 716 KB Output is correct
101 Correct 3 ms 740 KB Output is correct
102 Correct 3 ms 708 KB Output is correct
103 Correct 3 ms 716 KB Output is correct
104 Correct 3 ms 716 KB Output is correct
105 Correct 3 ms 716 KB Output is correct
106 Correct 3 ms 716 KB Output is correct
107 Correct 5 ms 716 KB Output is correct
108 Correct 3 ms 716 KB Output is correct
109 Correct 3 ms 716 KB Output is correct
110 Correct 2 ms 716 KB Output is correct
111 Correct 75 ms 12528 KB Output is correct
112 Correct 76 ms 12524 KB Output is correct
113 Correct 71 ms 12432 KB Output is correct
114 Correct 69 ms 12520 KB Output is correct
115 Correct 69 ms 12536 KB Output is correct
116 Correct 67 ms 12132 KB Output is correct
117 Correct 67 ms 12080 KB Output is correct
118 Correct 166 ms 14656 KB Output is correct
119 Correct 164 ms 14528 KB Output is correct
120 Correct 132 ms 13808 KB Output is correct
121 Correct 60 ms 12076 KB Output is correct
122 Correct 135 ms 14008 KB Output is correct
123 Correct 131 ms 13908 KB Output is correct
124 Correct 118 ms 13928 KB Output is correct
125 Correct 60 ms 12032 KB Output is correct
126 Correct 91 ms 12844 KB Output is correct
127 Correct 89 ms 12764 KB Output is correct
128 Correct 85 ms 12744 KB Output is correct
129 Correct 57 ms 12096 KB Output is correct
130 Correct 75 ms 12432 KB Output is correct
131 Correct 75 ms 12612 KB Output is correct
132 Correct 75 ms 12544 KB Output is correct
133 Correct 57 ms 12100 KB Output is correct
134 Correct 75 ms 12524 KB Output is correct
135 Correct 67 ms 12528 KB Output is correct
136 Correct 65 ms 12480 KB Output is correct
137 Correct 66 ms 12204 KB Output is correct
138 Correct 68 ms 12468 KB Output is correct
139 Correct 64 ms 12524 KB Output is correct
140 Correct 61 ms 12572 KB Output is correct
141 Correct 60 ms 12144 KB Output is correct
142 Correct 94 ms 13768 KB Output is correct
143 Correct 99 ms 13788 KB Output is correct
144 Correct 94 ms 13808 KB Output is correct
145 Correct 94 ms 13796 KB Output is correct
146 Correct 95 ms 13792 KB Output is correct
147 Correct 91 ms 13780 KB Output is correct
148 Correct 95 ms 13928 KB Output is correct
149 Correct 90 ms 13760 KB Output is correct
150 Correct 89 ms 13660 KB Output is correct
151 Correct 84 ms 13660 KB Output is correct
152 Correct 49 ms 12268 KB Output is correct
153 Correct 93 ms 13784 KB Output is correct
154 Correct 92 ms 13832 KB Output is correct
155 Correct 91 ms 13776 KB Output is correct
156 Correct 91 ms 13792 KB Output is correct
157 Correct 92 ms 13808 KB Output is correct
158 Correct 88 ms 13668 KB Output is correct
159 Correct 86 ms 13592 KB Output is correct
160 Correct 52 ms 12040 KB Output is correct
161 Correct 133 ms 14016 KB Output is correct
162 Correct 125 ms 14052 KB Output is correct
163 Correct 119 ms 13992 KB Output is correct
164 Correct 113 ms 13900 KB Output is correct
165 Correct 112 ms 13840 KB Output is correct
166 Correct 52 ms 12084 KB Output is correct
167 Correct 79 ms 13048 KB Output is correct
168 Correct 76 ms 13068 KB Output is correct
169 Correct 77 ms 12988 KB Output is correct
170 Correct 72 ms 12996 KB Output is correct
171 Correct 96 ms 14668 KB Output is correct
172 Correct 74 ms 13048 KB Output is correct
173 Correct 126 ms 13568 KB Output is correct
174 Correct 130 ms 13504 KB Output is correct
175 Correct 125 ms 13632 KB Output is correct
176 Correct 113 ms 13772 KB Output is correct