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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#250322 | #7627. Phony | ucup-team1516 | WA | 0ms | 3552kb | C++17 | 7.9kb | 2023-11-13 03:47:52 | 2023-11-13 03:47:52 |
Judging History
answer
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long int ull;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
return (ull)rng() % B;
}
inline double time() {
return static_cast<long double>(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count()) * 1e-9;
}
bool de = false;
// 0-indexed
template<typename T>
struct BIT{
int n;
vector<T> bit,ary;
BIT(int n = 0) : n(n),bit(n+1),ary(n) {}
T operator[](int k) {
return ary[k];
}
// [0, i)
T sum(int i) {
T res = 0;
for (; i > 0; i -= (i&-i)) {
res += bit[i];
}
return res;
}
// [l, r)
T sum(int l, int r) {
return sum(r) - sum(l);
}
void add(int i, T a) {
ary[i] += a;
i++;
for (; i <= n; i += (i&-i)) {
bit[i] += a;
}
}
int lower_bound(T k) { // k <= sum(res)
if (k <= 0) return 0;
int res = 0, i = 1;
while ((i << 1) <= n) i <<= 1;
for (; i ; i >>= 1) {
if (res+i <= n and bit[res+i] < k) {
k -= bit[res += i];
}
}
return res;
}
// The 2nd UC Stage 9: Qinhuangdao - I
// 円環状で見たときに bit[i]+bit[i-1]+...+bit[j] >= k となる最近の j と左辺の総和を求める
// 雑にlog2つ
pair<int, T> lower_bound_ex(int j, T k) {
T prefix = sum(j+1);
cout << " " << j << " " << k << " " << prefix << endl;
if (prefix < k) {
k -= prefix;
int l = 0, r = n;
while (r-l > 1) {
int mid = (l+r)/2;
T s = sum(mid, n);
if (s >= k) {
l = mid;
}
else {
r = mid;
}
}
return {l, prefix+sum(l,n)};
}
else {
int l = 0, r = j+1;
while (r-l > 1) {
int mid = (l+r)/2;
T s = sum(mid, j+1);
if (s > k) {
l = mid;
}
else {
r = mid;
}
}
return {l, sum(l, j+1)};
}
}
};
int main(){
cin.tie(nullptr);
ios::sync_with_stdio(false);
int n,q; cin >> n >> q;
if (n == 100) de = true;
ll K; cin >> K;
vector<ll> a(n);
for (int i = 0; i < n; ++i) {
cin >> a[i];
}
sort(a.rbegin(), a.rend());
vector<ll> z(n);
for (int i = 0; i < n; ++i) {
z[i] = a[i]%K;
}
sort(z.begin(), z.end());
z.erase(unique(z.begin(), z.end()), z.end());
int m = z.size();
int sz = 0;
BIT<int> bit(m);
auto add = [&](int i) -> void {
sz += 1;
bit.add(i, 1);
};
vector<int> md(n);
for (int i = 0; i < n; ++i) {
md[i] = lower_bound(z.begin(), z.end(), a[i]%K) - z.begin();
if (a[0]-a[i] < K) {
add(md[i]);
}
}
// bit[i]+bit[i-1]+bit[i-2]+...が初めてkを超える位置を求めたい
// ただしiは既にcnt個使われているものとする
// 最大値との差分を返すように設計したいねえ
auto findKth = [&](int i, int k, int cnt) -> ll {
if (bit[i]-cnt >= k) return 0;
if (sz-cnt < k) return K;
k += cnt;
auto p = bit.lower_bound_ex(i, k);
ll dif = z[i]-z[p.first];
if (dif < 0) dif += K;
return dif;
int f = k-(bit[i]-cnt);
if (bit.sum(i) >= f) {
int l = 0, r = i;
while (r-l > 1) {
int mid = (l+r)/2;
if (bit.sum(mid, i) >= f) {
l = mid;
}
else {
r = mid;
}
}
return z[i]-z[l];
}
else {
f -= bit.sum(i);
int l = 0, r = m;
while (r-l > 1) {
int mid = (l+r)/2;
if (sz - bit.sum(mid) >= f) {
l = mid;
}
else {
r = mid;
}
}
return z[i]+K-z[l];
}
};
int pos = md[0];
int cnt = 0;
ll mx = a[0];
__int128 nx = 0;
auto bitsum = [&](int s, int t) -> int {
if (t <= s) {
return bit.sum(t, s+1);
}
else {
return sz-bit.sum(s+1,t);
}
};
auto calNext = [&]() -> void {
if (sz >= n) {
return;
}
else {
ll dif = z[pos]-z[md[sz]];
if (dif < 0) dif += K;
nx = bitsum(pos, md[sz])-cnt;
ll uo = mx-dif;
nx += (__int128)(uo-a[sz]-K)/K*(__int128)sz;
}
};
calNext();
vector<pair<char,ll>> query;
auto debug = [&]() -> void {
// cout << "debug" << endl;
// for (int i = 0; i < query.size(); ++i) {
// cout << query[i].first << " " << query[i].second << endl;
// }
// cout << "A" << endl;
// for (int i = 0; i < 18; ++i) {
// cout << a[i] << " ";
// }
// cout << endl;
for (int i = 0; i < m; ++i) {
cout << bit[i] << " ";
}
cout << endl;
cout << "pos = " << pos << endl;
cout << "cnt = " << cnt << endl;
cout << "mx = " << mx << endl;
cout << "nx = " << (ll)nx << endl;
};
while (q--) {
char c; cin >> c;
ll uouo; cin >> uouo;
query.push_back({c, uouo});
if (c == 'A') {
int x = uouo;
ll res;
if (sz < x) {
res = a[x-1];
}
else {
ll dif = findKth(pos, x, cnt);
res = mx-dif;
}
cout << res << "\n";
}
else {
auto update = [&]() -> void {
if (pos) {
mx -= z[pos]-z[pos-1];
pos -= 1;
cnt = 0;
}
else {
mx -= z[0]-z[m-1]+K;
pos = m-1;
cnt = 0;
}
};
ll t = uouo;
while (sz < n and t >= nx) {
t -= nx;
mx = a[sz]+K;
int j = md[sz];
pos = j;
add(j);
cnt = bit[j];
calNext();
}
ll u = t/sz;
mx -= u*K;
t -= u*sz;
nx -= t;
if (bit[pos]-cnt >= t) {
cnt += t;
}
else {
t -= (bit[pos]-cnt);
update();
// debug();
if (bit.sum(pos+1) <= t) {
t -= bit.sum(pos+1);
mx -= z[pos]-z.back()+K;
pos = m-1;
cnt = 0;
}
// (r,pos]は全消し可能
int l = -1, r = pos;
while (r-l > 1) {
int mid = (l+r)/2;
if (bit.sum(mid+1,pos+1) <= t) {
r = mid;
}
else {
l = mid;
}
}
t -= bit.sum(r+1,pos+1);
mx -= z[pos]-z[r];
pos = r;
cnt = 0;
assert(bit[pos] >= t);
cnt = t;
}
// debug();
}
}
}
详细
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 3552kb
input:
3 5 5 7 3 9 A 3 C 1 A 2 C 2 A 3
output:
3 1 3 2 4 1 3 2 -1
result:
wrong answer 2nd lines differ - expected: '4', found: ' 1 3 2'