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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#741844 | #9432. Permutation | remmymilkyway | RE | 0ms | 0kb | C++23 | 1.9kb | 2024-11-13 15:20:34 | 2024-11-13 15:20:39 |
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int maxn = 1e3 + 5;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
int n, ans[maxn];
int ask(int mid, int x, int y) {
printf("0 ");
for (int i = 1; i <= mid; i++) {
printf("%d ", x);
}
for (int i = mid + 1; i <= n; i++) {
printf("%d ", y);
}
printf("\n");
fflush(stdout);
int res;
scanf("%d", &res);
return res;
}
void query(int l, int r, vector<int> val) {
if (l == r) {
ans[l] = val[0];
return;
}
int mid = (l + r) >> 1;
shuffle(val.begin(), val.end(), rng);
vector<int> pos0, pos1;
int idx = 0, lst = 0;
while (idx + 1 < (int)val.size()) {
int cur = ask(mid, val[idx], val[idx + 1]);
if (cur == 0) {
for (int i = lst; i <= idx; i++) {
pos1.push_back(val[i]);
}
pos0.push_back(val[idx + 1]);
idx += 2;
lst = idx;
} else if (cur == 2) {
for (int i = lst; i <= idx; i++) {
pos0.push_back(val[i]);
}
pos1.push_back(val[idx + 1]);
idx += 2;
lst = idx;
} else {
idx++;
}
}
if ((int)pos0.size() < mid - l + 1) {
for (int i = lst; i <= idx - 1; i++) {
pos0.push_back(val[i]);
}
} else {
for (int i = lst; i <= idx - 1; i++) {
pos1.push_back(val[i]);
}
}
query(l, mid, pos0);
query(mid + 1, r, pos1);
}
int main() {
scanf("%d", &n);
vector<int> cur;
for (int i = 1; i <= n; i++) {
cur.push_back(i);
}
query(1, n, cur);
printf("1 ");
for (int i = 1; i <= n; i++) {
printf("%d ", ans[i]);
}
printf("\n");
fflush(stdout);
return 0;
}
Details
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Test #1:
score: 0
Runtime Error
input:
5 1 2 0 2
output:
0 4 4 4 3 3 0 3 3 3 5 5 0 1 1 1 2 2 0 4 4 2 2 2