結果
問題 | No.1377 Half xor Half |
ユーザー |
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提出日時 | 2021-02-06 02:43:55 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 4 ms / 2,000 ms |
コード長 | 2,916 bytes |
コンパイル時間 | 2,156 ms |
コンパイル使用メモリ | 197,188 KB |
最終ジャッジ日時 | 2025-01-18 13:18:23 |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 46 |
ソースコード
#define _USE_MATH_DEFINES#include <bits/stdc++.h>using namespace std;#define FOR(i,m,n) for(int i=(m);i<(n);++i)#define REP(i,n) FOR(i,0,n)#define ALL(v) (v).begin(),(v).end()using ll = long long;constexpr int INF = 0x3f3f3f3f;constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;constexpr double EPS = 1e-8;constexpr int MOD = 1000000007;// constexpr int MOD = 998244353;constexpr int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1};constexpr int dy8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dx8[] = {0, -1, -1, -1, 0, 1, 1, 1};template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b ? (a = b, true) : false; }template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b ? (a = b, true) : false; }struct IOSetup {IOSetup() {std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);std::cout << fixed << setprecision(20);}} iosetup;int main() {int n; string s_str, t_str; cin >> n >> s_str >> t_str;vector<int> s(n * 2), t(n * 2);REP(i, n * 2) {s[i] = s_str[i] - '0';t[i] = t_str[i] - '0';}vector<int> ans;int match = -1;auto op = [&](int x) {ans.emplace_back(x);FOR(i, x, x + n) s[i] ^= s[(i + n) % (n * 2)];if (match != -1) match ^= 1;};REP(i, n) {if ((s[i] | s[i + n]) != (t[i] | t[i + n])) {cout << "-1\n";return 0;}if (t[i] == 0 && t[i + n] == 1) {if (s[i] == 1) {if (s[i + n] == 0) {op(n);op(i);} else {op(i);}}} else if (t[i] == 1 && t[i + n] == 0) {if (s[i] == 0 && s[i + n] == 1) {if (match == -1) {op(i);match = 0;} else if (match == 0) {op(n);op(i);} else {op(i);}} else if (s[i] == 1 && s[i + n] == 0) {if (match == -1) {match = 1;} else if (match == 0) {op(i);}} else if (s[i] == 1 && s[i + n] == 1) {if (match == -1) {match = 0;} else if (match == 1) {op(n);op(i);}}} else if (t[i] == 1 && t[i + n] == 1) {if (s[i] == 0 && s[i + n] == 1) {if (match == -1) {op(i);match = 1;} else if (match == 0) {op(i);} else {op(n);op(i);}} else if (s[i] == 1 && s[i + n] == 0) {if (match == -1) {match = 0;} else if (match == 1) {op(i);}} else if (s[i] == 1 && s[i + n] == 1) {if (match == -1) {match = 1;} else if (match == 0) {op(n);op(i);}}}}if (match == 0) op(n);REP(i, n * 2) assert(s[i] == t[i]);assert(ans.size() <= n * 2);cout << ans.size() << '\n';for (int x : ans) cout << x << '\n';return 0;}