Submission #782002

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
782002	2023-07-13 14:40:39	Arturgo	Tourism (JOI23_tourism)	C++14	100 / 100	229 ms	38080 KiB

tourism

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#include <bits/stdc++.h>
using namespace std;
const int INIT = (1 << 17) - 1;
int sommes[(1 << 18)];
void ajoute(int pos, int val) {
  pos += (1 << 17);
  while(pos != 0) {
    sommes[pos] += val;
    pos /= 2;
  }
}
int somme_entre(int deb, int fin) {
  deb += (1 << 17);
  fin += (1 << 17);
  
  int somme = 0;
  while(deb < fin) {
    if(deb % 2 == 1) {
      somme += sommes[deb];
      deb++;
    }
    if(fin % 2 == 1) {
      fin--;
      somme += sommes[fin];
    }
    deb /= 2;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

tourism.cpp: In function 'void recolorie(int, int)':
tourism.cpp:9:6: warning: 'last_col' may be used uninitialized in this function [-Wmaybe-uninitialized]
    9 |  pos += (1 << 17);
      |  ~~~~^~~~~~~~~~~~
tourism.cpp:165:7: note: 'last_col' was declared here
  165 |   int last_col;
      |       ^~~~~~~~
tourism.cpp:156:16: warning: 'end' may be used uninitialized in this function [-Wmaybe-uninitialized]
  156 |  return profs[u];
      |                ^
tourism.cpp:164:7: note: 'end' was declared here
  164 |   int end;
      |       ^~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 7 / 7
• Subtask 4: 18 / 18
• Subtask 5: 24 / 24
• Subtask 6: 41 / 41