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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#744359 | #9432. Permutation | jiamengtong | WA | 1ms | 4096kb | C++14 | 1.1kb | 2024-11-13 21:39:27 | 2024-11-13 21:39:27 |
Judging History
answer
#include<bits/stdc++.h>
#define M 1005
using namespace std;
int n, ans[M], a[M];
int ask(int l, int r, int x, int y)
{
int mid = (l + r) >> 1;
printf("0 ");
for(int i = 1; i <= mid; i++) printf("%d ", x);
for(int i = mid + 1; i <= n; i++) printf("%d ", y);
puts("");
fflush(stdout);
int res;
scanf("%d", &res);
return res;
}
void solve(int l, int r, vector<int> v)
{
if(l == r)
{
ans[l] = v[0];
return;
}
random_shuffle(v.begin(), v.end());
vector<int> L[2];
int fl = 0, lst = 0;
L[0].push_back(v[0]);
for(int i = 1; i < v.size(); i++)
{
int w = ask(l, r, v[i - 1], v[i]);
if(w != 1)
{
L[lst ^ 1].push_back(v[i]), lst ^= 1;
if(!fl)
{
if(w == 0) fl = lst;
else fl = lst ^ 1;
}
}
else
{
L[lst].push_back(v[i]);
}
}
int mid = (l + r) >> 1;
solve(l, mid, L[fl]);
solve(mid + 1, r, L[fl ^ 1]);
}
int main()
{
scanf("%d", &n);
vector<int> v;
for(int i = 1; i <= n; i++) v.push_back(i);
if(n<500)solve(1, n, v);
printf("1 ");
for(int i = 1; i <= n; i++) printf("%d ", ans[i]);
puts("");
fflush(stdout);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3720kb
input:
5 0 1 1 2 1 2 2 2
output:
0 5 5 5 4 4 0 4 4 4 2 2 0 2 2 2 3 3 0 3 3 3 1 1 0 4 4 3 3 3 0 3 3 2 2 2 0 3 4 4 4 4 0 1 1 1 1 5 1 3 4 2 1 5
result:
ok Accepted
Test #2:
score: -100
Wrong Answer
time: 0ms
memory: 4096kb
input:
1000
output:
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...
result:
wrong answer Integer element [index=1] equals to 0, violates the range [1, 1000]