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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#745800 | #9432. Permutation | chroneZ | RE | 1ms | 3844kb | C++17 | 2.1kb | 2024-11-14 11:42:45 | 2024-11-14 11:42:45 |
Judging History
answer
// Such a destiny was not desired.
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
constexpr int N = 1e3 + 5;
int n, p[N];
inline int ask(int m, int x, int y) {
cout << 0 << " ";
for(int i = 1; i <= m; i++) cout << x << " ";
for(int i = m + 1; i <= n; i++) cout << y << " ";
cout << endl;
int ret; cin >> ret;
return ret;
}
struct DUS {
int f[N];
inline void init(int n) {iota(f + 1, f + n + 1, 1);}
inline int find(int x) {while(x != f[x]) x = f[x] = f[f[x]]; return x;}
inline void merge(int x, int y) {
x = find(x), y = find(y);
f[y] = x;
}
} D;
int g[N];
void solve(int l, int r, vector<int> S) {
if(l == r) return p[l] = S[0], void();
int m = l + r >> 1;
vector<int> o = S;
vector<int> L, R;
while(S.size() > 1) {
int itx = rng() % S.size(), ity = rng() % S.size();
while(itx == ity) itx = rng() % S.size(), ity = rng() % S.size();
int x = S[itx], y = S[ity];
int e = ask(m, x, y);
if(e == 0) {
g[x] = 1, g[y] = 0;
if(itx < ity) swap(itx, ity);
S.erase(S.begin() + itx), S.erase(S.begin() + ity);
} else if(e == 2) {
g[x] = 0, g[y] = 1;
if(itx < ity) swap(itx, ity);
S.erase(S.begin() + itx), S.erase(S.begin() + ity);
} else {
D.merge(x, y);
S.erase(S.begin() + ity);
}
}
if(S.size() == 1) {
int x = -1;
for(auto y : o) {
if(y != S[0]) {
x = y;
break;
}
}
int e = ask(m, S[0], x);
if(e == 0) g[S[0]] = 1;
else if(e == 2) g[S[0]] = 0;
else D.merge(x, S[0]);
}
for(auto x : o) {
g[x] = g[D.find(x)];
if(g[x] == 0) L.push_back(x);
else R.push_back(x);
}
for(auto x : o) {
D.f[x] = x;
}
solve(l, m, L);
solve(m + 1, r, R);
}
int main() {
// ios::sync_with_stdio(false);
// cin.tie(nullptr), cout.tie(nullptr);
cin >> n;
vector<int> U(n);
iota(U.begin(), U.end(), 1);
D.init(n);
solve(1, n, U);
cout << 1 << " ";
for(int i = 1; i <= n; i++) cout << p[i] << " ";
cout << endl;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3844kb
input:
5 1 0 1 2 2 2 0 0
output:
0 1 1 1 5 5 0 1 1 1 3 3 0 2 2 2 4 4 0 2 2 2 1 1 0 3 3 2 2 2 0 4 4 2 2 2 0 4 3 3 3 3 0 5 5 5 5 1 1 3 4 2 1 5
result:
ok Accepted
Test #2:
score: -100
Runtime Error
input:
1000 2 1 1 0 1 1 1 0 0 2 2 1 1 1 0 2 2 0 1 1 0 1 0 1 2 1 1 1 1 1 2 2 1 2 0 1 0 0 0 1 2 1 1 2 1 1 1 1 2 2 0 1 1 1 1 0 1 1 2 2 2 2 1 2 1 1 1 1 1 0 1 1 1 1 2 1 2 0 0 2 1 2 2 1 1 1 0 0 1 2 2 1 1 1 1 1 2 1 2 2 0 1 1 1 2 0 0 0 2 1 2 1 2 1 1 1 0 2 1 2 1 1 1 1 0 1 1 1 2 1 0 2 0 1 1 0 1 1 1 1 1 1 1 0 1 0 2 0...
output:
0 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 837 83...