oj.uz

Submission #389665

# Submission time Handle Problem Language Result Execution time Memory
389665 2021-04-14T11:07:08 Z denkendoemeer Two Antennas (JOI19_antennas) C++14
100 / 100
 822 ms 60964 KB 
#include<bits/stdc++.h>
#define ll long long
const int inf=1e9;
using namespace std;
int h[200005],a[200005],b[200005],ans[200005],ql[200005],qr[200005],lazy[550000],n;
vector<int>t[400005],t1[400005],t2[400005];
array<int,2>aint[550000];
void upd(int nod,int x)
{
    aint[nod][1]=max(aint[nod][0]+x,aint[nod][1]);
    lazy[nod]=max(lazy[nod],x);
}
void push(int nod)
{
    upd(2*nod,lazy[nod]);
    upd(2*nod+1,lazy[nod]);
    lazy[nod]=-inf;
}
void update1(int nod,int st,int dr,int poz,int val)
{
    if (st==dr){
        aint[nod][0]=val;
        return ;
    }
    push(nod);
    int mij=(st+dr)/2;
    if (poz<=mij)
        update1(nod*2,st,mij,poz,val);
    else
        update1(nod*2+1,mij+1,dr,poz,val);
    aint[nod][0]=max(aint[nod*2][0],aint[nod*2+1][0]);
    aint[nod][1]=max(aint[nod*2][1],aint[nod*2+1][1]);
}
void update2(int nod,int st,int dr,int l,int r,int val)
{
    if (l<=st && dr<=r){
        upd(nod,val);
        return ;
    }
    int mij=(st+dr)/2;
    push(nod);
    if (l<=mij)
        update2(nod*2,st,mij,l,r,val);
    if (mij+1<=r)
        update2(nod*2+1,mij+1,dr,l,r,val);
    aint[nod][0]=max(aint[nod*2][0],aint[nod*2+1][0]);
    aint[nod][1]=max(aint[nod*2][1],aint[nod*2+1][1]);
}
int query(int nod,int st,int dr,int poz)
{
    if (poz<=st)
        return aint[nod][1];
    int mij=(st+dr)/2;
    push(nod);
    if (poz<=mij)
        return max(query(nod*2,st,mij,poz),query(nod*2+1,mij+1,dr,poz));
    else
        return query(nod*2+1,mij+1,dr,poz);
}
void calc()
{
    int i;
    for(i=0;i<550000;i++)
        aint[i][0]=aint[i][1]=lazy[i]=-inf-2;
    for(i=0;i<n;i++){
        for(auto it:t1[i])
            update1(1,0,n-1,it,-h[it]);
        if (i-a[i]>=0)
            update2(1,0,n-1,max(i-b[i],0),i-a[i],h[i]);
        for(auto it:t[i])
            ans[it]=max(query(1,0,n-1,ql[it]),ans[it]);
        for(auto it:t2[i])
            update1(1,0,n-1,it,-inf);
    }
}
int main()
{
    //freopen(".in","r",stdin);
    //freopen(".out","w",stdout);
    int i;
    scanf("%d",&n);
    for(i=0;i<n;i++){
        scanf("%d%d%d",&h[i],&a[i],&b[i]);
        t1[i+a[i]].push_back(i);
        t2[i+b[i]].push_back(i);
    }
    int q;
    scanf("%d",&q);
    memset(ans,-1,sizeof(ans));
    for(i=0;i<q;i++){
        scanf("%d%d",&ql[i],&qr[i]);
        ql[i]--;
        qr[i]--;
        t[qr[i]].push_back(i);
    }
    calc();
    for(i=0;i<n;i++)
        h[i]=-h[i];
    calc();
    for(i=0;i<q;i++)
        printf("%d\n",ans[i]);
return 0;
}

Compilation message

antennas.cpp: In function 'int main()':
antennas.cpp:81:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   81 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
antennas.cpp:83:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   83 |         scanf("%d%d%d",&h[i],&a[i],&b[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
antennas.cpp:88:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   88 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
antennas.cpp:91:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   91 |         scanf("%d%d",&ql[i],&qr[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 35620 KB Output is correct
2 Correct 22 ms 35768 KB Output is correct
3 Correct 22 ms 35704 KB Output is correct
4 Correct 24 ms 35624 KB Output is correct
5 Correct 22 ms 35660 KB Output is correct
6 Correct 21 ms 35708 KB Output is correct
7 Correct 22 ms 35664 KB Output is correct
8 Correct 22 ms 35776 KB Output is correct
9 Correct 22 ms 35660 KB Output is correct
10 Correct 22 ms 35660 KB Output is correct
11 Correct 22 ms 35676 KB Output is correct
12 Correct 22 ms 35688 KB Output is correct
13 Correct 22 ms 35660 KB Output is correct
14 Correct 22 ms 35660 KB Output is correct
15 Correct 23 ms 35648 KB Output is correct
16 Correct 24 ms 35660 KB Output is correct
17 Correct 22 ms 35648 KB Output is correct
18 Correct 22 ms 35660 KB Output is correct
19 Correct 22 ms 35672 KB Output is correct
20 Correct 21 ms 35660 KB Output is correct
21 Correct 23 ms 35768 KB Output is correct
22 Correct 23 ms 35660 KB Output is correct
23 Correct 22 ms 35676 KB Output is correct
24 Correct 22 ms 35716 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 35620 KB Output is correct
2 Correct 22 ms 35768 KB Output is correct
3 Correct 22 ms 35704 KB Output is correct
4 Correct 24 ms 35624 KB Output is correct
5 Correct 22 ms 35660 KB Output is correct
6 Correct 21 ms 35708 KB Output is correct
7 Correct 22 ms 35664 KB Output is correct
8 Correct 22 ms 35776 KB Output is correct
9 Correct 22 ms 35660 KB Output is correct
10 Correct 22 ms 35660 KB Output is correct
11 Correct 22 ms 35676 KB Output is correct
12 Correct 22 ms 35688 KB Output is correct
13 Correct 22 ms 35660 KB Output is correct
14 Correct 22 ms 35660 KB Output is correct
15 Correct 23 ms 35648 KB Output is correct
16 Correct 24 ms 35660 KB Output is correct
17 Correct 22 ms 35648 KB Output is correct
18 Correct 22 ms 35660 KB Output is correct
19 Correct 22 ms 35672 KB Output is correct
20 Correct 21 ms 35660 KB Output is correct
21 Correct 23 ms 35768 KB Output is correct
22 Correct 23 ms 35660 KB Output is correct
23 Correct 22 ms 35676 KB Output is correct
24 Correct 22 ms 35716 KB Output is correct
25 Correct 111 ms 39056 KB Output is correct
26 Correct 39 ms 36088 KB Output is correct
27 Correct 151 ms 40312 KB Output is correct
28 Correct 151 ms 40376 KB Output is correct
29 Correct 111 ms 39120 KB Output is correct
30 Correct 115 ms 38856 KB Output is correct
31 Correct 127 ms 39860 KB Output is correct
32 Correct 152 ms 40352 KB Output is correct
33 Correct 142 ms 40080 KB Output is correct
34 Correct 84 ms 37956 KB Output is correct
35 Correct 150 ms 40300 KB Output is correct
36 Correct 155 ms 40376 KB Output is correct
37 Correct 96 ms 37844 KB Output is correct
38 Correct 155 ms 39408 KB Output is correct
39 Correct 42 ms 36316 KB Output is correct
40 Correct 151 ms 39320 KB Output is correct
41 Correct 115 ms 38340 KB Output is correct
42 Correct 148 ms 39364 KB Output is correct
43 Correct 66 ms 37008 KB Output is correct
44 Correct 147 ms 39400 KB Output is correct
45 Correct 45 ms 36436 KB Output is correct
46 Correct 147 ms 39372 KB Output is correct
47 Correct 56 ms 36744 KB Output is correct
48 Correct 150 ms 39516 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 443 ms 49280 KB Output is correct
2 Correct 488 ms 51648 KB Output is correct
3 Correct 370 ms 47000 KB Output is correct
4 Correct 487 ms 51636 KB Output is correct
5 Correct 235 ms 42900 KB Output is correct
6 Correct 508 ms 51744 KB Output is correct
7 Correct 411 ms 49524 KB Output is correct
8 Correct 486 ms 51568 KB Output is correct
9 Correct 73 ms 38212 KB Output is correct
10 Correct 476 ms 51656 KB Output is correct
11 Correct 278 ms 45636 KB Output is correct
12 Correct 487 ms 51728 KB Output is correct
13 Correct 357 ms 48172 KB Output is correct
14 Correct 357 ms 47556 KB Output is correct
15 Correct 327 ms 48196 KB Output is correct
16 Correct 286 ms 48996 KB Output is correct
17 Correct 356 ms 47772 KB Output is correct
18 Correct 324 ms 47888 KB Output is correct
19 Correct 333 ms 47676 KB Output is correct
20 Correct 349 ms 47860 KB Output is correct
21 Correct 368 ms 47820 KB Output is correct
22 Correct 347 ms 48084 KB Output is correct
23 Correct 340 ms 47712 KB Output is correct
24 Correct 295 ms 48464 KB Output is correct

Subtask #4
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 35620 KB Output is correct
2 Correct 22 ms 35768 KB Output is correct
3 Correct 22 ms 35704 KB Output is correct
4 Correct 24 ms 35624 KB Output is correct
5 Correct 22 ms 35660 KB Output is correct
6 Correct 21 ms 35708 KB Output is correct
7 Correct 22 ms 35664 KB Output is correct
8 Correct 22 ms 35776 KB Output is correct
9 Correct 22 ms 35660 KB Output is correct
10 Correct 22 ms 35660 KB Output is correct
11 Correct 22 ms 35676 KB Output is correct
12 Correct 22 ms 35688 KB Output is correct
13 Correct 22 ms 35660 KB Output is correct
14 Correct 22 ms 35660 KB Output is correct
15 Correct 23 ms 35648 KB Output is correct
16 Correct 24 ms 35660 KB Output is correct
17 Correct 22 ms 35648 KB Output is correct
18 Correct 22 ms 35660 KB Output is correct
19 Correct 22 ms 35672 KB Output is correct
20 Correct 21 ms 35660 KB Output is correct
21 Correct 23 ms 35768 KB Output is correct
22 Correct 23 ms 35660 KB Output is correct
23 Correct 22 ms 35676 KB Output is correct
24 Correct 22 ms 35716 KB Output is correct
25 Correct 111 ms 39056 KB Output is correct
26 Correct 39 ms 36088 KB Output is correct
27 Correct 151 ms 40312 KB Output is correct
28 Correct 151 ms 40376 KB Output is correct
29 Correct 111 ms 39120 KB Output is correct
30 Correct 115 ms 38856 KB Output is correct
31 Correct 127 ms 39860 KB Output is correct
32 Correct 152 ms 40352 KB Output is correct
33 Correct 142 ms 40080 KB Output is correct
34 Correct 84 ms 37956 KB Output is correct
35 Correct 150 ms 40300 KB Output is correct
36 Correct 155 ms 40376 KB Output is correct
37 Correct 96 ms 37844 KB Output is correct
38 Correct 155 ms 39408 KB Output is correct
39 Correct 42 ms 36316 KB Output is correct
40 Correct 151 ms 39320 KB Output is correct
41 Correct 115 ms 38340 KB Output is correct
42 Correct 148 ms 39364 KB Output is correct
43 Correct 66 ms 37008 KB Output is correct
44 Correct 147 ms 39400 KB Output is correct
45 Correct 45 ms 36436 KB Output is correct
46 Correct 147 ms 39372 KB Output is correct
47 Correct 56 ms 36744 KB Output is correct
48 Correct 150 ms 39516 KB Output is correct
49 Correct 443 ms 49280 KB Output is correct
50 Correct 488 ms 51648 KB Output is correct
51 Correct 370 ms 47000 KB Output is correct
52 Correct 487 ms 51636 KB Output is correct
53 Correct 235 ms 42900 KB Output is correct
54 Correct 508 ms 51744 KB Output is correct
55 Correct 411 ms 49524 KB Output is correct
56 Correct 486 ms 51568 KB Output is correct
57 Correct 73 ms 38212 KB Output is correct
58 Correct 476 ms 51656 KB Output is correct
59 Correct 278 ms 45636 KB Output is correct
60 Correct 487 ms 51728 KB Output is correct
61 Correct 357 ms 48172 KB Output is correct
62 Correct 357 ms 47556 KB Output is correct
63 Correct 327 ms 48196 KB Output is correct
64 Correct 286 ms 48996 KB Output is correct
65 Correct 356 ms 47772 KB Output is correct
66 Correct 324 ms 47888 KB Output is correct
67 Correct 333 ms 47676 KB Output is correct
68 Correct 349 ms 47860 KB Output is correct
69 Correct 368 ms 47820 KB Output is correct
70 Correct 347 ms 48084 KB Output is correct
71 Correct 340 ms 47712 KB Output is correct
72 Correct 295 ms 48464 KB Output is correct
73 Correct 643 ms 57144 KB Output is correct
74 Correct 593 ms 52532 KB Output is correct
75 Correct 583 ms 55676 KB Output is correct
76 Correct 773 ms 60960 KB Output is correct
77 Correct 395 ms 49180 KB Output is correct
78 Correct 689 ms 58264 KB Output is correct
79 Correct 744 ms 58616 KB Output is correct
80 Correct 814 ms 60964 KB Output is correct
81 Correct 242 ms 45400 KB Output is correct
82 Correct 652 ms 56580 KB Output is correct
83 Correct 541 ms 54188 KB Output is correct
84 Correct 822 ms 60952 KB Output is correct
85 Correct 545 ms 53220 KB Output is correct
86 Correct 616 ms 55716 KB Output is correct
87 Correct 382 ms 49576 KB Output is correct
88 Correct 622 ms 57052 KB Output is correct
89 Correct 590 ms 54088 KB Output is correct
90 Correct 651 ms 55952 KB Output is correct
91 Correct 434 ms 50808 KB Output is correct
92 Correct 638 ms 56016 KB Output is correct
93 Correct 400 ms 49424 KB Output is correct
94 Correct 625 ms 56256 KB Output is correct
95 Correct 415 ms 50216 KB Output is correct
96 Correct 581 ms 56632 KB Output is correct