oj.uz

Submission #425287

# Submission time Handle Problem Language Result Execution time Memory
425287 2021-06-12T19:11:28 Z zoooma13 The short shank; Redemption (BOI21_prison) C++14
100 / 100
 1634 ms 123960 KB 
#include <bits/stdc++.h>
using namespace std;

#define MAX_N 2000006
#define INF 0x3f3f3f3f

int sz;
pair <int ,int> tree[2*MAX_N];
void bld(vector<int>&arr){
    for(int i=sz; i<(sz<<1); i++)
        tree[i] = make_pair(arr[i-sz] ,i-sz);
    for(int i=sz-1; i; i--)
        tree[i] = min(tree[i<<1] ,tree[i<<1|1]);
}
void upd(int p ,int v){
    for(tree[p+=sz].first = v; p>1; p>>=1)
        tree[p>>1] = min(tree[p] ,tree[p^1]);
}
pair <int ,int> qry(int l ,int r){
    auto res = make_pair(INF ,INF);
    for(l+=sz ,r+=sz+1; l<r; l>>=1 ,r>>=1){
        if(l&1) res = min(res ,tree[l++]);
        if(r&1) res = min(res ,tree[--r]);
    }
    return res;
}

#define FL p<<1
#define FR p<<1|1
array <int ,3> tree2[4*MAX_N];
array <int ,3> mrg(array <int ,3>&lf ,array <int ,3>&rt){
    array <int ,3> nw = lf;
    nw[0] += rt[0];
    if(lf[0] + rt[1] > nw[1]){
        nw[1] = lf[0] + rt[1];
        nw[2] = rt[2];
    }
    return nw;
}
void upd2(int i ,int v ,int l = 0 ,int r = sz-1 ,int p = 1){
    if(l == r){
        tree2[p][0] += v;
        tree2[p][1] += v;
        tree2[p][2] = i;
        return;
    }
    int mid = (l+r)>>1;
    if(i <= mid) upd2(i ,v ,l ,mid ,FL);
    else         upd2(i ,v ,mid+1 ,r ,FR);
    tree2[p] = mrg(tree2[FL] ,tree2[FR]);
}

int main()
{
    int n ,k ,T;
    scanf("%d%d%d",&n,&k,&T) ,sz = n+1;
    vector <int> a(n);
    for(int&i : a)
        scanf("%d",&i);

    int ans = 0;
    vector <int> lf(n+1 ,INF);
    vector <pair<int ,int>> q;
    for(int i = 0; i < n; i++){
        while(!q.empty() && q.back().first > T-i)
            q.pop_back();
        if(a[i] <= T){
            while(!q.empty() && q.back().first >= a[i]-i)
                q.pop_back();
            q.push_back({a[i]-i ,i});
        }else if(!q.empty())
            lf[i-1] = q.back().second;
        else
            ans++;
    }

    vector <int> cum(n+1);
    for(int i = 0; i < n; i++) if(lf[i] != INF)
        cum[lf[i]]++ ,cum[i+1]--;
    for(int i = 0; i <= n; i++)
        upd2(i ,cum[i]);

    bld(lf);
    for(int s = 0; s < k && tree2[1][1]; s++){
        int rem = tree2[1][2];
        while(true){
            auto q = qry(rem ,n-1);
            if(q.first > rem)
                break;
            upd2(lf[q.second] ,-1);
            upd2(q.second+1 ,+1);
            lf[q.second] = INF;
            upd(q.second ,INF);
            ans++;
        }
    }
    printf("%d\n",n-ans);
}

Compilation message

prison.cpp: In function 'int main()':
prison.cpp:56:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |     scanf("%d%d%d",&n,&k,&T) ,sz = n+1;
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
prison.cpp:59:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |         scanf("%d",&i);
      |         ~~~~~^~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 188 ms 26256 KB Output is correct
3 Correct 195 ms 26324 KB Output is correct
4 Correct 193 ms 27192 KB Output is correct
5 Correct 196 ms 26308 KB Output is correct
6 Correct 197 ms 26820 KB Output is correct
7 Correct 453 ms 26884 KB Output is correct
8 Correct 204 ms 26648 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 300 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 2 ms 552 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 4 ms 460 KB Output is correct
26 Correct 3 ms 468 KB Output is correct
27 Correct 3 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 2 ms 460 KB Output is correct
30 Correct 3 ms 460 KB Output is correct
31 Correct 2 ms 460 KB Output is correct
32 Correct 2 ms 440 KB Output is correct
33 Correct 2 ms 460 KB Output is correct
34 Correct 2 ms 460 KB Output is correct
35 Correct 3 ms 460 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 28 ms 5328 KB Output is correct
3 Correct 27 ms 5584 KB Output is correct
4 Correct 40 ms 5672 KB Output is correct
5 Correct 47 ms 5688 KB Output is correct
6 Correct 50 ms 5784 KB Output is correct
7 Correct 28 ms 5512 KB Output is correct
8 Correct 28 ms 5572 KB Output is correct
9 Correct 54 ms 5576 KB Output is correct
10 Correct 24 ms 5604 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 300 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 300 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 2 ms 552 KB Output is correct
24 Correct 2 ms 460 KB Output is correct
25 Correct 4 ms 460 KB Output is correct
26 Correct 3 ms 468 KB Output is correct
27 Correct 3 ms 460 KB Output is correct
28 Correct 2 ms 460 KB Output is correct
29 Correct 2 ms 460 KB Output is correct
30 Correct 3 ms 460 KB Output is correct
31 Correct 2 ms 460 KB Output is correct
32 Correct 2 ms 440 KB Output is correct
33 Correct 2 ms 460 KB Output is correct
34 Correct 2 ms 460 KB Output is correct
35 Correct 3 ms 460 KB Output is correct
36 Correct 0 ms 204 KB Output is correct
37 Correct 28 ms 5328 KB Output is correct
38 Correct 27 ms 5584 KB Output is correct
39 Correct 40 ms 5672 KB Output is correct
40 Correct 47 ms 5688 KB Output is correct
41 Correct 50 ms 5784 KB Output is correct
42 Correct 28 ms 5512 KB Output is correct
43 Correct 28 ms 5572 KB Output is correct
44 Correct 54 ms 5576 KB Output is correct
45 Correct 24 ms 5604 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 304 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 2 ms 460 KB Output is correct
58 Correct 2 ms 460 KB Output is correct
59 Correct 3 ms 460 KB Output is correct
60 Correct 2 ms 460 KB Output is correct
61 Correct 3 ms 460 KB Output is correct
62 Correct 2 ms 460 KB Output is correct
63 Correct 3 ms 460 KB Output is correct
64 Correct 2 ms 460 KB Output is correct
65 Correct 2 ms 460 KB Output is correct
66 Correct 2 ms 460 KB Output is correct
67 Correct 2 ms 440 KB Output is correct
68 Correct 2 ms 460 KB Output is correct
69 Correct 3 ms 460 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 28 ms 5632 KB Output is correct
72 Correct 27 ms 5700 KB Output is correct
73 Correct 42 ms 5708 KB Output is correct
74 Correct 47 ms 5716 KB Output is correct
75 Correct 46 ms 5696 KB Output is correct
76 Correct 30 ms 5548 KB Output is correct
77 Correct 28 ms 5568 KB Output is correct
78 Correct 54 ms 5576 KB Output is correct
79 Correct 24 ms 5448 KB Output is correct
80 Correct 38 ms 5640 KB Output is correct
81 Correct 49 ms 6192 KB Output is correct
82 Correct 46 ms 6100 KB Output is correct
83 Correct 50 ms 5856 KB Output is correct
84 Correct 61 ms 5660 KB Output is correct
85 Correct 53 ms 6092 KB Output is correct
86 Correct 48 ms 5956 KB Output is correct
87 Correct 41 ms 5956 KB Output is correct
88 Correct 49 ms 5852 KB Output is correct
89 Correct 55 ms 5868 KB Output is correct
90 Correct 49 ms 5956 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 304 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 188 ms 26256 KB Output is correct
14 Correct 195 ms 26324 KB Output is correct
15 Correct 193 ms 27192 KB Output is correct
16 Correct 196 ms 26308 KB Output is correct
17 Correct 197 ms 26820 KB Output is correct
18 Correct 453 ms 26884 KB Output is correct
19 Correct 204 ms 26648 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 300 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 300 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 2 ms 552 KB Output is correct
32 Correct 2 ms 460 KB Output is correct
33 Correct 4 ms 460 KB Output is correct
34 Correct 3 ms 468 KB Output is correct
35 Correct 3 ms 460 KB Output is correct
36 Correct 2 ms 460 KB Output is correct
37 Correct 2 ms 460 KB Output is correct
38 Correct 3 ms 460 KB Output is correct
39 Correct 2 ms 460 KB Output is correct
40 Correct 2 ms 440 KB Output is correct
41 Correct 2 ms 460 KB Output is correct
42 Correct 2 ms 460 KB Output is correct
43 Correct 3 ms 460 KB Output is correct
44 Correct 0 ms 204 KB Output is correct
45 Correct 28 ms 5328 KB Output is correct
46 Correct 27 ms 5584 KB Output is correct
47 Correct 40 ms 5672 KB Output is correct
48 Correct 47 ms 5688 KB Output is correct
49 Correct 50 ms 5784 KB Output is correct
50 Correct 28 ms 5512 KB Output is correct
51 Correct 28 ms 5572 KB Output is correct
52 Correct 54 ms 5576 KB Output is correct
53 Correct 24 ms 5604 KB Output is correct
54 Correct 0 ms 204 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 1 ms 332 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 1 ms 332 KB Output is correct
62 Correct 1 ms 304 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 1 ms 332 KB Output is correct
65 Correct 2 ms 460 KB Output is correct
66 Correct 2 ms 460 KB Output is correct
67 Correct 3 ms 460 KB Output is correct
68 Correct 2 ms 460 KB Output is correct
69 Correct 3 ms 460 KB Output is correct
70 Correct 2 ms 460 KB Output is correct
71 Correct 3 ms 460 KB Output is correct
72 Correct 2 ms 460 KB Output is correct
73 Correct 2 ms 460 KB Output is correct
74 Correct 2 ms 460 KB Output is correct
75 Correct 2 ms 440 KB Output is correct
76 Correct 2 ms 460 KB Output is correct
77 Correct 3 ms 460 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 28 ms 5632 KB Output is correct
80 Correct 27 ms 5700 KB Output is correct
81 Correct 42 ms 5708 KB Output is correct
82 Correct 47 ms 5716 KB Output is correct
83 Correct 46 ms 5696 KB Output is correct
84 Correct 30 ms 5548 KB Output is correct
85 Correct 28 ms 5568 KB Output is correct
86 Correct 54 ms 5576 KB Output is correct
87 Correct 24 ms 5448 KB Output is correct
88 Correct 38 ms 5640 KB Output is correct
89 Correct 49 ms 6192 KB Output is correct
90 Correct 46 ms 6100 KB Output is correct
91 Correct 50 ms 5856 KB Output is correct
92 Correct 61 ms 5660 KB Output is correct
93 Correct 53 ms 6092 KB Output is correct
94 Correct 48 ms 5956 KB Output is correct
95 Correct 41 ms 5956 KB Output is correct
96 Correct 49 ms 5852 KB Output is correct
97 Correct 55 ms 5868 KB Output is correct
98 Correct 49 ms 5956 KB Output is correct
99 Correct 1 ms 204 KB Output is correct
100 Correct 1 ms 300 KB Output is correct
101 Correct 1 ms 304 KB Output is correct
102 Correct 1 ms 332 KB Output is correct
103 Correct 1 ms 332 KB Output is correct
104 Correct 1 ms 332 KB Output is correct
105 Correct 1 ms 332 KB Output is correct
106 Correct 1 ms 332 KB Output is correct
107 Correct 1 ms 332 KB Output is correct
108 Correct 1 ms 332 KB Output is correct
109 Correct 1 ms 332 KB Output is correct
110 Correct 1 ms 308 KB Output is correct
111 Correct 192 ms 31172 KB Output is correct
112 Correct 186 ms 31068 KB Output is correct
113 Correct 198 ms 30520 KB Output is correct
114 Correct 167 ms 28100 KB Output is correct
115 Correct 196 ms 30144 KB Output is correct
116 Correct 399 ms 30244 KB Output is correct
117 Correct 197 ms 30252 KB Output is correct
118 Correct 2 ms 460 KB Output is correct
119 Correct 2 ms 460 KB Output is correct
120 Correct 3 ms 460 KB Output is correct
121 Correct 2 ms 460 KB Output is correct
122 Correct 3 ms 460 KB Output is correct
123 Correct 2 ms 444 KB Output is correct
124 Correct 2 ms 460 KB Output is correct
125 Correct 3 ms 448 KB Output is correct
126 Correct 3 ms 460 KB Output is correct
127 Correct 2 ms 460 KB Output is correct
128 Correct 2 ms 444 KB Output is correct
129 Correct 3 ms 444 KB Output is correct
130 Correct 3 ms 460 KB Output is correct
131 Correct 1 ms 204 KB Output is correct
132 Correct 27 ms 6092 KB Output is correct
133 Correct 27 ms 6116 KB Output is correct
134 Correct 44 ms 6084 KB Output is correct
135 Correct 47 ms 6184 KB Output is correct
136 Correct 49 ms 6168 KB Output is correct
137 Correct 28 ms 5956 KB Output is correct
138 Correct 31 ms 5960 KB Output is correct
139 Correct 54 ms 5952 KB Output is correct
140 Correct 24 ms 5936 KB Output is correct
141 Correct 38 ms 6108 KB Output is correct
142 Correct 48 ms 6084 KB Output is correct
143 Correct 45 ms 6092 KB Output is correct
144 Correct 46 ms 5948 KB Output is correct
145 Correct 48 ms 5676 KB Output is correct
146 Correct 51 ms 6084 KB Output is correct
147 Correct 50 ms 5964 KB Output is correct
148 Correct 50 ms 5956 KB Output is correct
149 Correct 48 ms 5884 KB Output is correct
150 Correct 53 ms 5960 KB Output is correct
151 Correct 49 ms 5956 KB Output is correct
152 Correct 861 ms 123960 KB Output is correct
153 Correct 814 ms 123680 KB Output is correct
154 Correct 832 ms 123700 KB Output is correct
155 Correct 1099 ms 119152 KB Output is correct
156 Correct 1213 ms 111880 KB Output is correct
157 Correct 817 ms 121380 KB Output is correct
158 Correct 970 ms 121424 KB Output is correct
159 Correct 1634 ms 121404 KB Output is correct
160 Correct 1566 ms 121268 KB Output is correct
161 Correct 1127 ms 121020 KB Output is correct
162 Correct 944 ms 121028 KB Output is correct