Submission #299653

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
299653	2020-09-15 11:52:06	E869120	Trampoline (info1cup20_trampoline)	C++14	100 / 100	1384 ms	69116 KiB

trampoline

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#include <bits/stdc++.h>
using namespace std;
// Input
int H, W;
int N, X[1 << 18], Y[1 << 18];
int Q, SX[1 << 18], SY[1 << 18], EX[1 << 18], EY[1 << 18];
// Compress
map<pair<int, int>, int> Map;
vector<int> GX;
vector<int> V[1 << 18];
// Graph
int par[1 << 18][33];
bool query(int sx, int sy, int gx, int gy) {
  if (sx > gx) return false;
  if (sy > gy) return false;
  if (sx == gx) return true;
  
  int pos1 = lower_bound(GX.begin(), GX.end(), sx) - GX.begin();
  if (pos1 == (int)GX.size() || GX[pos1] != sx) return false;
  int pos2 = lower_bound(V[pos1].begin(), V[pos1].end(), sy) - V[pos1].begin();
  if (pos2 == (int)V[pos1].size()) return false;
  
  int pos = Map[make_pair(sx, V[pos1][pos2])];
  int rem = gx - sx - 1;
  for (int i = 30; i >= 0; i--) {
    if (rem >= (1 << i)) { rem -= (1 << i); pos = par[pos][i]; }
 
 
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Compilation message (stderr)

trampoline.cpp: In function 'int main()':
trampoline.cpp:39:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   39 |  scanf("%d%d%d", &H, &W, &N);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
trampoline.cpp:40:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   40 |  for (int i = 1; i <= N; i++) scanf("%d%d", &X[i], &Y[i]);
      |                               ~~~~~^~~~~~~~~~~~~~~~~~~~~~
trampoline.cpp:42:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   42 |  scanf("%d", &Q);
      |  ~~~~~^~~~~~~~~~
trampoline.cpp:43:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   43 |  for (int i = 1; i <= Q; i++) scanf("%d%d%d%d", &SX[i], &SY[i], &EX[i], &EY[i]);
      |                               ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 23 / 23
• Subtask 2: 20 / 20
• Subtask 3: 11 / 11
• Subtask 4: 19 / 19
• Subtask 5: 27 / 27