Submission #1140460

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1140460	2025-01-27 01:47:59	Sang	Permutation (APIO22_perm)	C++17	0 / 100	0 ms	320 KiB

perm

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#include<bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i++)
#define FORD(i, a, b) for (int i = (a), _b = (b); i >= _b; i--)
#define fi first
#define se second
#define pb push_back
#define ALL(a) (a).begin(), (a).end()
#define task "kbsiudthw"
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef pair<int, ii> pii;
const int N = 1e5 + 5;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 2277;
int bit[60];
vector<int> construct_permutation(long long k){
   --k;
    bit[0] = k;
   while (true){
        int ok = 0;
        FOR (i, 1, 60){
            int x = 2 * (bit[i-1] - bit[i]) / 3;
            if (x & 1) --x;
            x = max(x, 0);
 
 
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Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:32:20: warning: iteration 59 invokes undefined behavior [-Waggressive-loop-optimizations]
   32 |             bit[i] += x / 2;
      |             ~~~~~~~^~~~~~~~
perm.cpp:4:52: note: within this loop
    4 | #define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i++)
      |                                                    ^
perm.cpp:27:9: note: in expansion of macro 'FOR'
   27 |         FOR (i, 1, 60){
      |         ^~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 90