#include <bits/stdc++.h>
//#include<ext/rope>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC target("avx2")
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
#define F first
#define S second
#define pb push_back
#define sz(x) int(x.size())
#define el '\n'
#define all(x) x.begin(), x.end()
using namespace std;
//using namespace __gnu_pbds;
//using namespace __gnu_cxx;
typedef long long ll;
typedef long double ld;
typedef short int si;
typedef unsigned long long ull;
//typedef tree <ll, null_type, less <ll> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
vector <pair <int, int> > ans[200];
int mx_d = 0;
int D[100];
void solve(int l, int r, int d) {
if (l == r){
return;
}
int md = (l + r) >> 1;
for (int i = l, j = md + 1; i <= md; i++, j++) {
if (j <= r) {
ans[d].pb({i, j});
}
}
solve(l, md, d + 1);
solve(md + 1, r, d + 1);
}
void solve1(int l, int r, int d, bool need_ret) {
if (l == r){
return;
}
int md = (l + r) >> 1;
if (!need_ret) {
solve1(l, md, d + 1, 0);
solve1(md + 1, r, d + 1, 0);
}
for (int i = md, j = md + 1; i >= l; i--, j++) {
if (j <= r) {
ans[d].pb({i, j});
}
}
}
void swp(int &a, int &b) {
if (a > b) {
swap(a, b);
}
}
int n;
void check_ans(vector <vector <pair <int, int> > > ans) {
vector <int> a(n);
iota(all(a), 0);
do {
vector <int> b = a;
for (auto x : ans) {
for (auto [i, j] : x) {
swp(b[i - 1], b[j - 1]);
}
}
int i = 0;
while (i < n && b[i] == i) {
i++;
}
if (i < n) {
cout << "BAD: ";
for (auto x : a) {
cout << x + 1 << " ";
}
cout << el;
}
} while (next_permutation(all(a)));
}
int main()
{
// cerr.precision(7);
// cerr << fixed;
ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);
// in("23.in");
// in("input.txt");
// out("output.txt");
// clock_t start = clock();
cin >> n;
for (int i = 0; i < n; i++) {
D[i] = -1;
}
vector <vector <pair <int, int> > > cur_ans;
solve1(1, n, 0, 0);
for (int d = 149; d >= 0; d--) {
if (sz(ans[d])) {
cur_ans.pb(ans[d]);
}
// if (n <= 53 && sz(ans[d + 1])) {
// cur_ans.pb(ans[d + 1]);
// }
}
for (int i = 0; i < 150; i++) {
ans[i].clear();
}
// if (n <= 53) {
// solve(1, n, 0);
// for (int i = 0; i < 150; i++) {
// if (sz(ans[i])) {
// cur_ans.pb(ans[i]);
// }
// }
// }
int m = sz(cur_ans);
for (int i = 0; i < 2; i++) {
for (int i = 0; i < m; i++) {
cur_ans.pb(cur_ans[i]);
}
}
// check_ans(cur_ans);
cout << sz(cur_ans) << el;
for (auto x : cur_ans) {
for (auto [p1, p2] : x) {
cout << "CMPSWP R" << p1 << " R" << p2 << " ";
}
cout << el;
}
}
Compilation message
malnarisc.cpp: In function 'void check_ans(std::vector<std::vector<std::pair<int, int> > >)':
malnarisc.cpp:81:23: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
81 | for (auto [i, j] : x) {
| ^
malnarisc.cpp: In function 'int main()':
malnarisc.cpp:148:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
148 | for (auto [p1, p2] : x) {
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Partially correct |
1 ms |
204 KB |
Partially correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
204 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
332 KB |
not sorted |
| 2 |
Halted |
0 ms |
0 KB |
- |
