oj.uz

답안 #379031

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
379031 2021-03-17T08:41:01 Z leinad2 Cake 3 (JOI19_cake3) C++17
100 / 100
 1397 ms 124268 KB 
#include<bits/stdc++.h>
using namespace std;
struct node
{
    int l, r, v;
    long long sum;
}nd;
node pst[5000010];
pair<int, int>A[200010];
map<int, int>x, y;
map<int, int>::iterator it;
int t, n, q, a, b, c, d, i, j, sz, m, rt, cnt, root[200010], opt[200010], X[200010], Y[200010];
long long dap=-1e18;
void make_node(){pst[sz++]={-1, -1, 0, 0};}
void init(int id, int s, int e)
{
    if(s==e)return;
    int m=s+e>>1;
    if(pst[id].l==-1)
    {
        pst[id].l=sz;
        make_node();
    }
    init(pst[id].l, s, m);
    if(pst[id].r==-1)
    {
        pst[id].r=sz;
        make_node();
    }
    init(pst[id].r, m+1, e);
}
void update(int prev, int id, int s, int e, int x)
{
    pst[id].v=pst[prev].v+1;
    pst[id].sum=pst[prev].sum+Y[x];
    if(s==e)return;
    int m=s+e>>1;
    if(x<=m)
    {
        pst[id].l=sz;
        make_node();
        pst[id].r=pst[prev].r;
        update(pst[prev].l, pst[id].l, s, m, x);
    }
    else
    {
        pst[id].r=sz;
        make_node();
        pst[id].l=pst[prev].l;
        update(pst[prev].r, pst[id].r, m+1, e, x);
    }
}
long long get(int prev, int id, int s, int e, int k)
{
    if(s==e)return min(k, (int)(pst[id].sum-pst[prev].sum)/Y[s])*Y[s];
    long long d=pst[pst[id].r].sum-pst[pst[prev].r].sum;
    int ee=pst[pst[id].r].v-pst[pst[prev].r].v;
    int m=s+e>>1;
    if(k<=ee)return get(pst[prev].r, pst[id].r, m+1, e, k);
    else return d+get(pst[prev].l, pst[id].l, s, m, k-ee);
}
void dnc(int s, int e, int l, int r)
{
    if(s>e)return;
    int mid=s+e>>1;
    long long ans=-1e18;
    int pos;
    for(int i=max(l, mid+m-1);i<=r;i++)
    {
        long long res=get(root[mid], root[i-1], 1, cnt, m-2)+Y[A[mid].second]+Y[A[i].second]-(X[A[i].first]-X[A[mid].first]);
        if(ans<res)
        {
            ans=res;
            pos=i;
        }
    }
    dap=max(dap, ans);
    opt[mid]=pos;
    dnc(s, mid-1, l, pos);
    dnc(mid+1, e, pos, r);
}
main()
{
    for(scanf("%d %d", &n, &m);i++<n;)
    {
        scanf("%d %d", &b, &a);
        a*=2;
        A[i].first=a,A[i].second=b;
        x[a]++;y[b]++;
    }
    sort(A+1, A+n+1);
    for(it=x.begin();it!=x.end();it++)it->second=++cnt,X[cnt]=it->first;cnt=0;
    for(it=y.begin();it!=y.end();it++)it->second=++cnt,Y[cnt]=it->first;
    make_node();
    init(0, 1, cnt);
    for(i=0;i++<n;)
    {
        A[i].first=x[A[i].first];
        A[i].second=y[A[i].second];
        root[i]=sz;
        make_node();
        update(root[i-1], root[i], 1, cnt, A[i].second);
    }
    dnc(1, n-m+1, 1, n);
    cout<<dap;
}

Compilation message

cake3.cpp: In function 'void init(int, int, int)':
cake3.cpp:18:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   18 |     int m=s+e>>1;
      |           ~^~
cake3.cpp: In function 'void update(int, int, int, int, int)':
cake3.cpp:37:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |     int m=s+e>>1;
      |           ~^~
cake3.cpp: In function 'long long int get(int, int, int, int, int)':
cake3.cpp:58:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   58 |     int m=s+e>>1;
      |           ~^~
cake3.cpp: In function 'void dnc(int, int, int, int)':
cake3.cpp:65:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   65 |     int mid=s+e>>1;
      |             ~^~
cake3.cpp: At global scope:
cake3.cpp:82:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   82 | main()
      |      ^
cake3.cpp: In function 'int main()':
cake3.cpp:92:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   92 |     for(it=x.begin();it!=x.end();it++)it->second=++cnt,X[cnt]=it->first;cnt=0;
      |     ^~~
cake3.cpp:92:73: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   92 |     for(it=x.begin();it!=x.end();it++)it->second=++cnt,X[cnt]=it->first;cnt=0;
      |                                                                         ^~~
cake3.cpp:84:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   84 |     for(scanf("%d %d", &n, &m);i++<n;)
      |         ~~~~~^~~~~~~~~~~~~~~~~
cake3.cpp:86:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   86 |         scanf("%d %d", &b, &a);
      |         ~~~~~^~~~~~~~~~~~~~~~~
cake3.cpp: In function 'void dnc(int, int, int, int)':
cake3.cpp:79:8: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
   79 |     dnc(s, mid-1, l, pos);
      |     ~~~^~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 504 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct

Subtask #2
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 504 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 5 ms 1260 KB Output is correct
39 Correct 5 ms 1260 KB Output is correct
40 Correct 4 ms 1260 KB Output is correct
41 Correct 4 ms 1260 KB Output is correct
42 Correct 4 ms 1388 KB Output is correct
43 Correct 4 ms 1132 KB Output is correct
44 Correct 4 ms 1132 KB Output is correct
45 Correct 4 ms 1260 KB Output is correct
46 Correct 4 ms 1260 KB Output is correct
47 Correct 4 ms 1260 KB Output is correct
48 Correct 4 ms 1132 KB Output is correct
49 Correct 4 ms 1260 KB Output is correct
50 Correct 4 ms 1260 KB Output is correct
51 Correct 4 ms 1260 KB Output is correct
52 Correct 4 ms 1260 KB Output is correct
53 Correct 4 ms 1260 KB Output is correct
54 Correct 4 ms 1260 KB Output is correct
55 Correct 4 ms 1260 KB Output is correct
56 Correct 3 ms 1260 KB Output is correct
57 Correct 3 ms 1260 KB Output is correct
58 Correct 3 ms 1260 KB Output is correct
59 Correct 2 ms 492 KB Output is correct
60 Correct 2 ms 492 KB Output is correct
61 Correct 1 ms 492 KB Output is correct
62 Correct 2 ms 620 KB Output is correct
63 Correct 2 ms 492 KB Output is correct
64 Correct 1 ms 492 KB Output is correct
65 Correct 4 ms 1260 KB Output is correct
66 Correct 4 ms 1132 KB Output is correct
67 Correct 4 ms 1260 KB Output is correct
68 Correct 4 ms 1260 KB Output is correct
69 Correct 4 ms 1132 KB Output is correct
70 Correct 5 ms 1260 KB Output is correct
71 Correct 2 ms 748 KB Output is correct
72 Correct 2 ms 748 KB Output is correct
73 Correct 4 ms 1132 KB Output is correct
74 Correct 3 ms 1260 KB Output is correct

Subtask #3
76.0 / 76.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 504 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 5 ms 1260 KB Output is correct
39 Correct 5 ms 1260 KB Output is correct
40 Correct 4 ms 1260 KB Output is correct
41 Correct 4 ms 1260 KB Output is correct
42 Correct 4 ms 1388 KB Output is correct
43 Correct 4 ms 1132 KB Output is correct
44 Correct 4 ms 1132 KB Output is correct
45 Correct 4 ms 1260 KB Output is correct
46 Correct 4 ms 1260 KB Output is correct
47 Correct 4 ms 1260 KB Output is correct
48 Correct 4 ms 1132 KB Output is correct
49 Correct 4 ms 1260 KB Output is correct
50 Correct 4 ms 1260 KB Output is correct
51 Correct 4 ms 1260 KB Output is correct
52 Correct 4 ms 1260 KB Output is correct
53 Correct 4 ms 1260 KB Output is correct
54 Correct 4 ms 1260 KB Output is correct
55 Correct 4 ms 1260 KB Output is correct
56 Correct 3 ms 1260 KB Output is correct
57 Correct 3 ms 1260 KB Output is correct
58 Correct 3 ms 1260 KB Output is correct
59 Correct 2 ms 492 KB Output is correct
60 Correct 2 ms 492 KB Output is correct
61 Correct 1 ms 492 KB Output is correct
62 Correct 2 ms 620 KB Output is correct
63 Correct 2 ms 492 KB Output is correct
64 Correct 1 ms 492 KB Output is correct
65 Correct 4 ms 1260 KB Output is correct
66 Correct 4 ms 1132 KB Output is correct
67 Correct 4 ms 1260 KB Output is correct
68 Correct 4 ms 1260 KB Output is correct
69 Correct 4 ms 1132 KB Output is correct
70 Correct 5 ms 1260 KB Output is correct
71 Correct 2 ms 748 KB Output is correct
72 Correct 2 ms 748 KB Output is correct
73 Correct 4 ms 1132 KB Output is correct
74 Correct 3 ms 1260 KB Output is correct
75 Correct 1353 ms 112876 KB Output is correct
76 Correct 1353 ms 112732 KB Output is correct
77 Correct 1243 ms 115880 KB Output is correct
78 Correct 1397 ms 117868 KB Output is correct
79 Correct 887 ms 117740 KB Output is correct
80 Correct 928 ms 114184 KB Output is correct
81 Correct 753 ms 88228 KB Output is correct
82 Correct 1028 ms 94764 KB Output is correct
83 Correct 853 ms 93364 KB Output is correct
84 Correct 944 ms 94188 KB Output is correct
85 Correct 810 ms 88940 KB Output is correct
86 Correct 554 ms 82668 KB Output is correct
87 Correct 558 ms 82284 KB Output is correct
88 Correct 754 ms 84076 KB Output is correct
89 Correct 690 ms 87192 KB Output is correct
90 Correct 577 ms 88320 KB Output is correct
91 Correct 511 ms 80736 KB Output is correct
92 Correct 479 ms 80236 KB Output is correct
93 Correct 526 ms 84204 KB Output is correct
94 Correct 507 ms 85816 KB Output is correct
95 Correct 631 ms 87916 KB Output is correct
96 Correct 81 ms 10092 KB Output is correct
97 Correct 87 ms 10860 KB Output is correct
98 Correct 86 ms 10732 KB Output is correct
99 Correct 84 ms 10620 KB Output is correct
100 Correct 78 ms 9940 KB Output is correct
101 Correct 80 ms 9964 KB Output is correct
102 Correct 382 ms 62964 KB Output is correct
103 Correct 369 ms 61932 KB Output is correct
104 Correct 419 ms 66796 KB Output is correct
105 Correct 321 ms 62188 KB Output is correct
106 Correct 329 ms 63468 KB Output is correct
107 Correct 296 ms 60268 KB Output is correct
108 Correct 1271 ms 116972 KB Output is correct
109 Correct 1229 ms 124268 KB Output is correct
110 Correct 181 ms 34028 KB Output is correct
111 Correct 181 ms 34540 KB Output is correct
112 Correct 760 ms 101484 KB Output is correct
113 Correct 892 ms 124268 KB Output is correct