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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#250319 | #7627. Phony | ucup-team1516 | WA | 1ms | 3528kb | C++17 | 7.8kb | 2023-11-13 03:42:34 | 2023-11-13 03:42:35 |
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;
}
// 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);
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;
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();
}
}
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3528kb
input:
3 5 5 7 3 9 A 3 C 1 A 2 C 2 A 3
output:
3 4 -1
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 3480kb
input:
5 8 8 294 928 293 392 719 A 4 C 200 A 5 C 10 A 2 C 120 A 1 A 3
output:
294 200 191 0 -2
result:
ok 5 lines
Test #3:
score: -100
Wrong Answer
time: 1ms
memory: 3448kb
input:
100 100 233 5101 8001 6561 6329 6305 7745 4321 811 49 1121 3953 8054 8415 9876 6701 4097 6817 6081 495 5521 2389 2042 4721 8119 7441 7840 8001 5756 5561 129 1 5981 4801 7201 8465 7251 6945 5201 5626 3361 5741 3650 7901 2513 8637 3841 5621 9377 101 3661 5105 4241 5137 7501 5561 3581 4901 561 8721 811...
output:
6881 9161 4721 8200 2945 7647 7530 5291 5001 2042 4721 4721 6881 4097 7187 7218 7035 7018 811 6752 2561 6683 6114 6135 3581 5291 1485 5949 5388 2042 5303 5171 5205 4721 5084 4029 4097 4591 4816 4586 4701 2042 4535 4450 4603 4428 3581 4343 115 2042 4274 2042 4273 1485 4321 -17553
result:
wrong answer 7th lines differ - expected: '7531', found: '7530'