oj.uz

Submission #448075

# Submission time Handle Problem Language Result Execution time Memory
448075 2021-07-28T17:43:50 Z cadmiumsky Trampoline (info1cup20_trampoline) C++14
0 / 100
 1096 ms 16788 KB 
#include <iostream>
#include <algorithm>

#define cell(x,y) kus(x,y)

using namespace std;

struct cell {
  int x,y;
  bool operator <(const cell a) const {
    return x<a.x || (a.x==x && y<a.y);
  }
} green[200001];
int n;

static cell kus(int x, int y) {
  cell rez;
  rez.x=x;
  rez.y=y;
  return rez;
}

static int findfirst(int x, int y) {
  cell val=cell(x,y);
  int temp,bound=-1;
  for(int i=(1<<17); i>0; i>>=1) {
    temp=min(n,bound+i);
    if(green[temp]<val)
      bound=temp;
  }
  return bound+1;
}

int st[200001][18];

int main() {
  int q,r,c;
  cin >> r >> c >> n;
  for(int i=0,a,b; i<n; i++) {
    cin >> a >> b;
    green[i]=cell(a,b);
  }
  green[n]=cell(r+1,c+1);
  sort(green,green+n);
  for(int i=0;i<n; i++) {
    st[i][0]=findfirst(green[i].x+1,green[i].y);
    if(green[st[i][0]].x!=green[i].x+1)
      st[i][0]=n;
  }
  st[n][0]=n;
  for(int step=1; step<18; step++) {
    for(int j=0; j<=n;j++) {
      st[j][step]=st[st[j][step-1]][step-1];
    }
  }
  
  cin >> q;
  
  for(int tc=0,x1,x2,y1,y2,diff,curr; tc<q; tc++) {
    cin >> x1 >> y1 >> x2 >> y2;
    if(x1==x2) {
      cout << "Yes\n";
    }
    else if(x2-x1>n) 
      cout << "No\n";
    else {
      diff=x2-x1;
      curr=findfirst(x1,y1);
      if(green[curr].x!=x1)
        cout << "No\n";
      else { 
        --diff;
        for(int i=0; i<18; i++) {
          if((1<<i)&diff)
            curr=st[curr][i];
        }
        cout << (green[curr]<cell(x2,y2)?"Yes\n":"No\n");
      }
    }
  }
}

Subtask #1
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 972 KB expected NO, found YES [2nd token]
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 182 ms 15920 KB expected NO, found YES [121st token]
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 962 ms 16724 KB expected NO, found YES [1st token]
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 716 KB expected NO, found YES [2nd token]
2 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 1096 ms 16788 KB expected NO, found YES [22nd token]
2 Halted 0 ms 0 KB -