oj.uz

Submission #431595

# Submission time Handle Problem Language Result Execution time Memory
431595 2021-06-17T13:25:30 Z tqbfjotld Long Mansion (JOI17_long_mansion) C++14
10 / 100
 3000 ms 37660 KB 
#include <bits/stdc++.h>
using namespace std;

struct node{
    int s,e;
    int minv,maxv;
    node *l,*r;
    node (int _s, int _e){
        s = _s; e = _e;
        if (s!=e){
            l = new node(s,(s+e)/2);
            r = new node((s+e)/2+1,e);
        }
        minv = 999999999;
        maxv = -1;
    }
    void upd(int pos, int val){
        minv = min(minv,val);
        maxv = max(maxv,val);
        if (s==e) return;
        if (pos<=(s+e)/2) l->upd(pos,val);
        else r->upd(pos,val);
    }
    int querymin(int a, int b){
        if (a<=s && e<=b){
            return minv;
        }
        else if (b<=(s+e)/2) return l->querymin(a,b);
        else if (a>(s+e)/2) return r->querymin(a,b);
        else return min(l->querymin(a,b),r->querymin(a,b));
    }
    int querymax(int a, int b){
        if (a<=s && e<=b){
            return maxv;
        }
        else if (b<=(s+e)/2) return l->querymax(a,b);
        else if (a>(s+e)/2) return r->querymax(a,b);
        else return max(l->querymax(a,b),r->querymax(a,b));
    }
    int rightblock(int minpos, int val){
       // printf("call rightblock %d %d on %d %d\n",minpos,val,s,e);
        if (s==e){
            return minv<val?s:999999999;
        }
        if (minpos==s){
            if (l->minv<val) return l->rightblock(minpos,val);
            else return r->rightblock((s+e)/2+1,val);
        }
        if (minpos>(s+e)/2){
            return r->rightblock(minpos,val);
        }
        int t = l->rightblock(minpos,val);
        if (t==999999999){
            return r->rightblock((s+e)/2+1,val);
        }
        else return t;
    }
    int leftblock(int maxpos, int val){
        if (s==e){
            return maxv>val?s:-1;
        }
        if (maxpos==e){
            if (r->maxv>val) return r->leftblock(maxpos,val);
            else return l->leftblock(maxpos,val);
        }
        if (maxpos<=(s+e)/2) return l->leftblock(maxpos,val);
        int t = r->leftblock(maxpos,val);
        if (t==-1) return l->leftblock(maxpos,val);
        else return t;
    }
}*root1,*root2;

int walltype[500005];
vector<int> keys[500005];

int intervall[500005];
int intervalr[500005];

int walll[500005];
int wallr[500005];

map<int,int> tempmap;

void rec(int l, int r, vector<int> &thing){
    vector<pair<int,int> > stuff;
    for (int x = l; x<=r; x++){
        stuff.push_back({-(x&-x),x});
    }
    sort(stuff.begin(),stuff.end());
    for (auto x : stuff){
        thing.push_back(x.second);
    }
}

int main(){
    int n;
    scanf("%d",&n);
    root1 = new node(0,n+1);
    root2 = new node(0,n+1);
    for (int x = 1; x<n; x++){
        scanf("%d",&walltype[x]);
    }
    for (int x = 1; x<=n; x++){
        int t;
        scanf("%d",&t);
        for (int y = 0; y<t; y++){
            int a;
            scanf("%d",&a);
            keys[x].push_back(a);
        }
    }
    for (int x = 1; x<n; x++){
        for (auto y : keys[x]){
            tempmap[y] = x;
        }
        walll[x] = tempmap[walltype[x]];
    }
    tempmap.clear();
    for (int x = n-1; x>0; x--){
        for (auto y : keys[x+1]){
            tempmap[y] = x+1;
        }
        if (tempmap.count(walltype[x])) wallr[x] = tempmap[walltype[x]];
        else wallr[x] = n+1;
    }
    for (int x = 1; x<n; x++){
        root1->upd(x,walll[x]);
        root1->upd(x,wallr[x]);
    }
    vector<int> order;
    rec(1,n,order);
   // printf("wall preproc done\n");
   int num_iter = 0;
    for (int x : order){
        int curl = x;
        int curr = x;
        while (true){
          //  printf("curl,curr = %d %d\n",curl,curr);
          num_iter++;
          assert(num_iter<1000000);
            int newr = root1->rightblock(curr,curl);
            newr = min(newr,n);
           // printf("rightblock %d %d = %d\n",curr,curl,newr);
            int newl = root1->leftblock(curl-1,newr)+1;
            newl = max(newl,1);
            //printf("leftblock %d %d = %d\n",curl-1,curr,newl);
            if (newl==curl&& newr==curr) {
                intervall[x] = curl;
                intervalr[x] = curr;
                break;
            }
            if (newl<curl){
                int te = root2->querymax(newl,x-1);
                if (te>=x){
                    intervalr[x] = te;
                    intervall[x] = root2->querymin(newl,x-1);
                    break;
                }
            }
            if (newr>curr){
                int te = root2->querymin(x+1,newr);
                if (te<=x){
                    intervall[x] = te;
                    intervalr[x] = root2->querymax(x+1,newr);
                    break;
                }
            }
            curl = newl;
            curr = newr;
        }
        root2->upd(x,intervalr[x]);
        root2->upd(x,intervall[x]);
      //  printf("interval[%d] = %d %d\n",x,intervall[x],intervalr[x]);
    }
    int q;
    scanf("%d",&q);
    for (int x = 0; x<q; x++){
        int a,b;
        scanf("%d%d",&a,&b);
        if (b<=intervalr[a] && b>=intervall[a]){
            printf("YES\n");
        }
        else{
            printf("NO\n");
        }
    }
}

Compilation message

long_mansion.cpp: In function 'int main()':
long_mansion.cpp:97:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
long_mansion.cpp:101:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |         scanf("%d",&walltype[x]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~
long_mansion.cpp:105:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |         scanf("%d",&t);
      |         ~~~~~^~~~~~~~~
long_mansion.cpp:108:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  108 |             scanf("%d",&a);
      |             ~~~~~^~~~~~~~~
long_mansion.cpp:176:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  176 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
long_mansion.cpp:179:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  179 |         scanf("%d%d",&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 12584 KB Output is correct
2 Correct 27 ms 12844 KB Output is correct
3 Correct 62 ms 13372 KB Output is correct
4 Correct 15 ms 12656 KB Output is correct
5 Correct 48 ms 12572 KB Output is correct
6 Correct 17 ms 12576 KB Output is correct
7 Correct 29 ms 12596 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 12584 KB Output is correct
2 Correct 27 ms 12844 KB Output is correct
3 Correct 62 ms 13372 KB Output is correct
4 Correct 15 ms 12656 KB Output is correct
5 Correct 48 ms 12572 KB Output is correct
6 Correct 17 ms 12576 KB Output is correct
7 Correct 29 ms 12596 KB Output is correct
8 Correct 155 ms 14152 KB Output is correct
9 Correct 151 ms 14148 KB Output is correct
10 Correct 175 ms 14536 KB Output is correct
11 Correct 257 ms 15220 KB Output is correct
12 Correct 158 ms 14104 KB Output is correct
13 Correct 179 ms 14328 KB Output is correct
14 Correct 140 ms 14432 KB Output is correct
15 Correct 159 ms 14464 KB Output is correct
16 Correct 165 ms 14544 KB Output is correct
17 Correct 142 ms 14388 KB Output is correct
18 Correct 142 ms 14448 KB Output is correct
19 Correct 162 ms 14460 KB Output is correct
20 Correct 197 ms 14488 KB Output is correct
21 Correct 166 ms 14668 KB Output is correct
22 Correct 148 ms 14432 KB Output is correct
23 Correct 197 ms 14292 KB Output is correct
24 Correct 147 ms 14304 KB Output is correct
25 Correct 151 ms 14288 KB Output is correct
26 Correct 144 ms 14252 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3093 ms 37660 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 12584 KB Output is correct
2 Correct 27 ms 12844 KB Output is correct
3 Correct 62 ms 13372 KB Output is correct
4 Correct 15 ms 12656 KB Output is correct
5 Correct 48 ms 12572 KB Output is correct
6 Correct 17 ms 12576 KB Output is correct
7 Correct 29 ms 12596 KB Output is correct
8 Correct 155 ms 14152 KB Output is correct
9 Correct 151 ms 14148 KB Output is correct
10 Correct 175 ms 14536 KB Output is correct
11 Correct 257 ms 15220 KB Output is correct
12 Correct 158 ms 14104 KB Output is correct
13 Correct 179 ms 14328 KB Output is correct
14 Correct 140 ms 14432 KB Output is correct
15 Correct 159 ms 14464 KB Output is correct
16 Correct 165 ms 14544 KB Output is correct
17 Correct 142 ms 14388 KB Output is correct
18 Correct 142 ms 14448 KB Output is correct
19 Correct 162 ms 14460 KB Output is correct
20 Correct 197 ms 14488 KB Output is correct
21 Correct 166 ms 14668 KB Output is correct
22 Correct 148 ms 14432 KB Output is correct
23 Correct 197 ms 14292 KB Output is correct
24 Correct 147 ms 14304 KB Output is correct
25 Correct 151 ms 14288 KB Output is correct
26 Correct 144 ms 14252 KB Output is correct
27 Execution timed out 3093 ms 37660 KB Time limit exceeded
28 Halted 0 ms 0 KB -