oj.uz

Submission #556234

# Submission time Handle Problem Language Result Execution time Memory
556234 2022-05-02T15:37:24 Z 600Mihnea Team Contest (JOI22_team) C++17
73 / 100
 2000 ms 133348 KB 
#include <bits/stdc++.h>

bool home = 1;

using namespace std;

struct T {
  int x;
  int y;
  int z;
  int tx;
  int ty;
  int tz;
};

bool cmp_x_inv(T a,T b) {
  return a.x>b.x;
}

typedef long long ll;
const int N=150000+7;
const int INF=(int)1e9+7;
int n,zm[N],invy[N],invz[N],value[N];
T a[N];
int aib1[N];

void clr1() {
  for (int i=1;i<=n;i++) aib1[i]=-INF;
}

int get1(int i) {
  int sol=-INF;
  while (i) {
    sol=max(sol,aib1[i]);
    i-=i&(-i);
  }
  return sol;
}

void upd1(int i,int x) {
  while (i<=n){
    aib1[i]=max(aib1[i],x);
    i+=i&(-i);
  }
}

map<int, int> aib[N];

void clr() {
  for (int i=1;i<=n;i++) aib[i].clear();
}

void upd(int x,int y,int val) {
  x=n+1-x;
  y=n+1-y;
  for (int i=x;i<=n;i+=i&(-i)) {
    for (int j=y;j<=n;j+=j&(-j)) {
      aib[i][j]=max(aib[i][j],val);
    }
  }
}

int get(int x,int y) {
  x=n+1-x;
  y=n+1-y;
  int sol=-INF;
  for (int i=x;i>=1;i-=i&(-i)) {
    for (int j=y;j>=1;j-=j&(-j)) {
      if (aib[i].count(j)) {
        sol=max(sol,aib[i][j]);
      }
    }
  }
  return sol;
}

signed main() {
#ifdef ONLINE_JUDGE
  home = 0;
#endif

  home=0;

  if (home) {
    freopen("I_am_iron_man", "r", stdin);
  }
  else {
    ios::sync_with_stdio(0); cin.tie(0);
  }

  cin>>n;
  for (int i=1;i<=n;i++) {
    cin>>a[i].x>>a[i].y>>a[i].z;
  }
  sort(a+1,a+n+1,cmp_x_inv);
  {
    map<int, int> tx,ty,tz;
    for (int i=1;i<=n;i++) tx[a[i].x]=0,ty[a[i].y]=0,tz[a[i].z]=0;
    int ind;
    ind=0; for (auto &it:tx)it.second=++ind;
    ind=0; for (auto &it:ty)it.second=++ind, invy[ind]=it.first;
    ind=0; for (auto &it:tz)it.second=++ind, invz[ind]=it.first;
    for (int i=1;i<=n;i++) a[i].tx=tx[a[i].x], a[i].ty=ty[a[i].y], a[i].tz=tz[a[i].z];
  }
  int print=-1;

  for (int ITER=0;ITER<2;ITER++) {
    clr1();
    clr();

    for (int i=n;i>=1;i--) { /// optimize using aib
      zm[i]=get1(a[i].ty-1);
      upd1(a[i].ty,a[i].tz);
      if (zm[i]<=a[i].tz) zm[i]=-INF;

      if (1<=zm[i]&&zm[i]<=n) value[i]=invz[zm[i]]+a[i].y; else assert(zm[i]==-INF);
    }

    int last=n;
    while(last>=1){
      int first=last;
      while(first-1>=1&&a[first-1].x==a[first].x) first--;

      for (int i=first;i<=last;i++) {
        int best=-INF;
        int y=a[i].ty,z=a[i].tz;
        print=max(print,get(y+1,z+1)+a[i].x);
      }

      for (int i=first;i<=last;i++) {
        if (zm[i]!=-INF) {
          assert(1<=zm[i]&&zm[i]<=n);
          upd(a[i].ty,zm[i],value[i]);
        }
      }
      last=first-1;
    }
    for (int i=1;i<=n;i++) swap(a[i].y,a[i].z), swap(a[i].ty,a[i].tz), swap(invz[i],invy[i]);
  }

  cout<<print<<"\n";
}

Compilation message

team.cpp: In function 'int main()':
team.cpp:125:13: warning: unused variable 'best' [-Wunused-variable]
  125 |         int best=-INF;
      |             ^~~~
team.cpp:85:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |     freopen("I_am_iron_man", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 3 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 4 ms 7380 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 4 ms 7380 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 3 ms 7380 KB Output is correct
14 Correct 6 ms 7508 KB Output is correct
15 Correct 4 ms 7380 KB Output is correct
16 Correct 4 ms 7380 KB Output is correct
17 Correct 4 ms 7380 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7380 KB Output is correct
21 Correct 4 ms 7380 KB Output is correct
22 Correct 4 ms 7380 KB Output is correct
23 Correct 4 ms 7380 KB Output is correct
24 Correct 4 ms 7380 KB Output is correct
25 Correct 4 ms 7380 KB Output is correct

Subtask #2
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 3 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 4 ms 7380 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 4 ms 7380 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 3 ms 7380 KB Output is correct
14 Correct 6 ms 7508 KB Output is correct
15 Correct 4 ms 7380 KB Output is correct
16 Correct 4 ms 7380 KB Output is correct
17 Correct 4 ms 7380 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7380 KB Output is correct
21 Correct 4 ms 7380 KB Output is correct
22 Correct 4 ms 7380 KB Output is correct
23 Correct 4 ms 7380 KB Output is correct
24 Correct 4 ms 7380 KB Output is correct
25 Correct 4 ms 7380 KB Output is correct
26 Correct 34 ms 9880 KB Output is correct
27 Correct 18 ms 8276 KB Output is correct
28 Correct 18 ms 8340 KB Output is correct
29 Correct 15 ms 8020 KB Output is correct
30 Correct 12 ms 8012 KB Output is correct
31 Correct 17 ms 7992 KB Output is correct
32 Correct 11 ms 7700 KB Output is correct
33 Correct 8 ms 7636 KB Output is correct
34 Correct 9 ms 8084 KB Output is correct
35 Correct 4 ms 7380 KB Output is correct
36 Correct 4 ms 7380 KB Output is correct
37 Correct 7 ms 7636 KB Output is correct
38 Correct 8 ms 7696 KB Output is correct
39 Correct 6 ms 7380 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 4 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 4 ms 7512 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 167 ms 13772 KB Output is correct
12 Correct 80 ms 12108 KB Output is correct
13 Correct 105 ms 12952 KB Output is correct
14 Correct 139 ms 14540 KB Output is correct
15 Correct 126 ms 14008 KB Output is correct
16 Correct 123 ms 13772 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 4 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 4 ms 7512 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 167 ms 13772 KB Output is correct
12 Correct 80 ms 12108 KB Output is correct
13 Correct 105 ms 12952 KB Output is correct
14 Correct 139 ms 14540 KB Output is correct
15 Correct 126 ms 14008 KB Output is correct
16 Correct 123 ms 13772 KB Output is correct
17 Correct 4 ms 7384 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7380 KB Output is correct
21 Correct 6 ms 7472 KB Output is correct
22 Correct 195 ms 14576 KB Output is correct
23 Correct 187 ms 14412 KB Output is correct
24 Correct 102 ms 12652 KB Output is correct
25 Correct 130 ms 14724 KB Output is correct
26 Correct 116 ms 14552 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 4 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 4 ms 7512 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 167 ms 13772 KB Output is correct
12 Correct 80 ms 12108 KB Output is correct
13 Correct 105 ms 12952 KB Output is correct
14 Correct 139 ms 14540 KB Output is correct
15 Correct 126 ms 14008 KB Output is correct
16 Correct 123 ms 13772 KB Output is correct
17 Correct 4 ms 7384 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7380 KB Output is correct
21 Correct 6 ms 7472 KB Output is correct
22 Correct 195 ms 14576 KB Output is correct
23 Correct 187 ms 14412 KB Output is correct
24 Correct 102 ms 12652 KB Output is correct
25 Correct 130 ms 14724 KB Output is correct
26 Correct 116 ms 14552 KB Output is correct
27 Correct 5 ms 7380 KB Output is correct
28 Correct 4 ms 7380 KB Output is correct
29 Correct 4 ms 7380 KB Output is correct
30 Correct 4 ms 7380 KB Output is correct
31 Correct 11 ms 7704 KB Output is correct
32 Correct 4 ms 7380 KB Output is correct
33 Correct 5 ms 7380 KB Output is correct
34 Correct 344 ms 14940 KB Output is correct
35 Correct 248 ms 14928 KB Output is correct
36 Correct 288 ms 15796 KB Output is correct
37 Correct 247 ms 16136 KB Output is correct
38 Correct 146 ms 14712 KB Output is correct
39 Correct 144 ms 12308 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 4 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 4 ms 7512 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 167 ms 13772 KB Output is correct
12 Correct 80 ms 12108 KB Output is correct
13 Correct 105 ms 12952 KB Output is correct
14 Correct 139 ms 14540 KB Output is correct
15 Correct 126 ms 14008 KB Output is correct
16 Correct 123 ms 13772 KB Output is correct
17 Correct 4 ms 7384 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7380 KB Output is correct
21 Correct 6 ms 7472 KB Output is correct
22 Correct 195 ms 14576 KB Output is correct
23 Correct 187 ms 14412 KB Output is correct
24 Correct 102 ms 12652 KB Output is correct
25 Correct 130 ms 14724 KB Output is correct
26 Correct 116 ms 14552 KB Output is correct
27 Correct 5 ms 7380 KB Output is correct
28 Correct 4 ms 7380 KB Output is correct
29 Correct 4 ms 7380 KB Output is correct
30 Correct 4 ms 7380 KB Output is correct
31 Correct 11 ms 7704 KB Output is correct
32 Correct 4 ms 7380 KB Output is correct
33 Correct 5 ms 7380 KB Output is correct
34 Correct 344 ms 14940 KB Output is correct
35 Correct 248 ms 14928 KB Output is correct
36 Correct 288 ms 15796 KB Output is correct
37 Correct 247 ms 16136 KB Output is correct
38 Correct 146 ms 14712 KB Output is correct
39 Correct 144 ms 12308 KB Output is correct
40 Correct 12 ms 8020 KB Output is correct
41 Correct 18 ms 8088 KB Output is correct
42 Correct 8 ms 7772 KB Output is correct
43 Correct 8 ms 7764 KB Output is correct
44 Correct 612 ms 17760 KB Output is correct
45 Correct 645 ms 27428 KB Output is correct
46 Correct 597 ms 24768 KB Output is correct
47 Correct 631 ms 28144 KB Output is correct
48 Correct 160 ms 15912 KB Output is correct

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7380 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 4 ms 7380 KB Output is correct
4 Correct 4 ms 7380 KB Output is correct
5 Correct 3 ms 7380 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7380 KB Output is correct
8 Correct 4 ms 7380 KB Output is correct
9 Correct 4 ms 7380 KB Output is correct
10 Correct 4 ms 7380 KB Output is correct
11 Correct 4 ms 7380 KB Output is correct
12 Correct 4 ms 7380 KB Output is correct
13 Correct 3 ms 7380 KB Output is correct
14 Correct 6 ms 7508 KB Output is correct
15 Correct 4 ms 7380 KB Output is correct
16 Correct 4 ms 7380 KB Output is correct
17 Correct 4 ms 7380 KB Output is correct
18 Correct 4 ms 7380 KB Output is correct
19 Correct 4 ms 7380 KB Output is correct
20 Correct 4 ms 7380 KB Output is correct
21 Correct 4 ms 7380 KB Output is correct
22 Correct 4 ms 7380 KB Output is correct
23 Correct 4 ms 7380 KB Output is correct
24 Correct 4 ms 7380 KB Output is correct
25 Correct 4 ms 7380 KB Output is correct
26 Correct 34 ms 9880 KB Output is correct
27 Correct 18 ms 8276 KB Output is correct
28 Correct 18 ms 8340 KB Output is correct
29 Correct 15 ms 8020 KB Output is correct
30 Correct 12 ms 8012 KB Output is correct
31 Correct 17 ms 7992 KB Output is correct
32 Correct 11 ms 7700 KB Output is correct
33 Correct 8 ms 7636 KB Output is correct
34 Correct 9 ms 8084 KB Output is correct
35 Correct 4 ms 7380 KB Output is correct
36 Correct 4 ms 7380 KB Output is correct
37 Correct 7 ms 7636 KB Output is correct
38 Correct 8 ms 7696 KB Output is correct
39 Correct 6 ms 7380 KB Output is correct
40 Correct 4 ms 7380 KB Output is correct
41 Correct 4 ms 7380 KB Output is correct
42 Correct 4 ms 7380 KB Output is correct
43 Correct 4 ms 7380 KB Output is correct
44 Correct 4 ms 7380 KB Output is correct
45 Correct 4 ms 7380 KB Output is correct
46 Correct 4 ms 7380 KB Output is correct
47 Correct 4 ms 7380 KB Output is correct
48 Correct 4 ms 7512 KB Output is correct
49 Correct 4 ms 7380 KB Output is correct
50 Correct 167 ms 13772 KB Output is correct
51 Correct 80 ms 12108 KB Output is correct
52 Correct 105 ms 12952 KB Output is correct
53 Correct 139 ms 14540 KB Output is correct
54 Correct 126 ms 14008 KB Output is correct
55 Correct 123 ms 13772 KB Output is correct
56 Correct 4 ms 7384 KB Output is correct
57 Correct 4 ms 7380 KB Output is correct
58 Correct 4 ms 7380 KB Output is correct
59 Correct 4 ms 7380 KB Output is correct
60 Correct 6 ms 7472 KB Output is correct
61 Correct 195 ms 14576 KB Output is correct
62 Correct 187 ms 14412 KB Output is correct
63 Correct 102 ms 12652 KB Output is correct
64 Correct 130 ms 14724 KB Output is correct
65 Correct 116 ms 14552 KB Output is correct
66 Correct 5 ms 7380 KB Output is correct
67 Correct 4 ms 7380 KB Output is correct
68 Correct 4 ms 7380 KB Output is correct
69 Correct 4 ms 7380 KB Output is correct
70 Correct 11 ms 7704 KB Output is correct
71 Correct 4 ms 7380 KB Output is correct
72 Correct 5 ms 7380 KB Output is correct
73 Correct 344 ms 14940 KB Output is correct
74 Correct 248 ms 14928 KB Output is correct
75 Correct 288 ms 15796 KB Output is correct
76 Correct 247 ms 16136 KB Output is correct
77 Correct 146 ms 14712 KB Output is correct
78 Correct 144 ms 12308 KB Output is correct
79 Correct 12 ms 8020 KB Output is correct
80 Correct 18 ms 8088 KB Output is correct
81 Correct 8 ms 7772 KB Output is correct
82 Correct 8 ms 7764 KB Output is correct
83 Correct 612 ms 17760 KB Output is correct
84 Correct 645 ms 27428 KB Output is correct
85 Correct 597 ms 24768 KB Output is correct
86 Correct 631 ms 28144 KB Output is correct
87 Correct 160 ms 15912 KB Output is correct
88 Execution timed out 2052 ms 133348 KB Time limit exceeded
89 Halted 0 ms 0 KB -