Submission #414974

#	Time	Username	Problem	Language	Result	Execution time	Memory
414974		Ahmadsm2005	Unscrambling a Messy Bug (IOI16_messy)	C++14	38 / 100	4 ms	332 KiB

messy

#include <bits/stdc++.h>
#include "messy.h"
//#include "grader.cpp"
using namespace std;
int P[150];
vector<int>restore_permutation(int n,int w,int r){
srand(2005);
string s;
vector<int>ANS;
for(int i=0;i<n;i++)
s+='0';
for(int i=0;i<n;i++){
s[i]='1';
add_element(s);
}
compile_set();
for(int i=0;i<n;i++)
s[i]='0';
int FF=0;
while(1){
int X=count(s.begin(),s.end(),'0');
if(!X)
break;
while(1){
int Q=rand()%X,POS;
for(int i=0;i<n;i++){
if(s[i]=='0'&&!Q){
s[i]='1',POS=i;
break;
}
else if(s[i]=='0')
Q--;
}
string t;
for(int i=0;i<n;i++)
if(s[i]=='X')
t+='0';
else
t+=s[i];
if(check_element(t)){
s=t;
P[POS]=FF;
break;
}
else
s[POS]='X';
X--;
}
FF++;
}
for(int i=0;i<n;i++)
ANS.push_back(P[i]);
return ANS;
}

Compilation message (stderr)

messy.cpp: In function 'std::vector<int> restore_permutation(int, int, int)':
messy.cpp:42:7: warning: 'POS' may be used uninitialized in this function [-Wmaybe-uninitialized]
   42 | P[POS]=FF;
      | ~~~~~~^~~

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 0 / 11
• Subtask 4: 0 / 21
• Subtask 5: 0 / 30