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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#489899 | #8819. CNOI Knowledge | _log_ | WA | 1ms | 3624kb | C++14 | 1.5kb | 2024-07-25 08:22:03 | 2024-07-25 08:22:03 |
Judging History
answer
# include <bits/stdc++.h>
# define maxn 1005
# define ull unsigned long long
# define rep(i, j, k) for(int i = j; i <= k; ++i)
using namespace std;
int n, tot;
int a[maxn], ans[maxn][maxn];
int d[maxn];
ull has[maxn], pw[maxn];
map<ull, int> mp;
inline int query(int l, int r) {
if(ans[l][r]) return ans[l][r];
cout << "? " << l << ' ' << r << endl;
cin >> ans[l][r]; return ans[l][r];
}
void update(int r) {
memset(d, 0, sizeof(d));
rep(i, 1, r) {
ull hsh = has[r] - has[i - 1] * pw[r - i + 1], len = r - i + 1;
if(!mp.count(hsh)) d[1]++;
else d[mp[hsh] - len + 2]++;
d[i + 1]--; mp[hsh] = r;
}
rep(i, 1, r) d[i] += d[i - 1];
rep(l, 1, r) ans[l][r] = ans[l][r - 1] + d[l];
}
signed main() {
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n; a[1] = ++tot; ans[1][1] = 1;
pw[0] = 1; rep(i, 1, n) pw[i] = pw[i - 1] * 19260817;
rep(i, 2, n) {
int now = query(1, n);
if(now - ans[1][i - 1] == i) a[i] = ++tot;
else {
int l = 1, r = i, pos, mid;
while(l <= r) {
mid = l + r >> 1;
if(query(mid, i) - ans[mid][i - 1] == i - mid + 1) pos = mid - 1, r = mid - 1;
else l = mid + 1;
}
a[i] = a[pos];
}
has[i] = has[i - 1] * 19260817 + a[i]; update(i);
}
cout << "! ";
rep(i, 1, n) cout << a[i] << ' ';
cout << '\n';
return 0;
}
详细
Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 3624kb
input:
12 72 3 3 1 6 3 1 6 3 1 10 3 1 10 3 1 14 6 3 1 14 6 3 1 19 5 2 19 5 3 1 25 9 3 1
output:
? 1 12 ? 1 2 ? 2 3 ? 3 3 ? 2 4 ? 3 4 ? 4 4 ? 3 5 ? 4 5 ? 5 5 ? 3 6 ? 5 6 ? 6 6 ? 4 7 ? 6 7 ? 7 7 ? 4 8 ? 6 8 ? 7 8 ? 8 8 ? 5 9 ? 7 9 ? 8 9 ? 9 9 ? 5 10 ? 8 10 ? 9 10 ? 6 11 ? 9 11 ? 10 11 ? 11 11 ? 6 12 ? 9 12 ? 11 12 ? 12 12 ! 1 0 0 0 0 0 0 0 0 0 0 0
result:
wrong answer Integer 0 violates the range [1, 10^9]