結果

問題 No.1495 パンの仕入れ
ユーザー ecottea
提出日時 2024-06-08 01:06:46
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 219 ms / 2,000 ms
コード長 10,700 bytes
コンパイル時間 4,351 ms
コンパイル使用メモリ 254,720 KB
最終ジャッジ日時 2025-02-21 20:43:40
ジャッジサーバーID
(参考情報)
judge5 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2
other AC * 46
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ソースコード

diff #
プレゼンテーションモードにする

#ifndef HIDDEN_IN_VS //
//
#define _CRT_SECURE_NO_WARNINGS
//
#include <bits/stdc++.h>
using namespace std;
//
using ll = long long; using ull = unsigned long long; // -2^63 2^63 = 9 * 10^18int -2^31 2^31 = 2 * 10^9
using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vvvvi = vector<vvvi>;
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vvvvl = vector<vvvl>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;
//
const double PI = acos(-1);
int DX[4] = {1, 0, -1, 0}; // 4
int DY[4] = {0, 1, 0, -1};
int INF = 1001001001; ll INFL = 4004004003094073385LL; // (int)INFL = INF, (int)(-INFL) = -INF;
//
struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;
//
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))
#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))
#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}
#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 n-1
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s t
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s t
#define repe(v, a) for(const auto& v : (a)) // a
#define repea(v, a) for(auto& v : (a)) // a
#define repb(set, d) for(int set = 0, set##_ub = 1 << int(d); set < set##_ub; ++set) // d
#define repis(i, set) for(int i = lsb(set), bset##i = set; i >= 0; bset##i -= 1 << i, i = lsb(bset##i)) // set
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a
#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} //
#define EXIT(a) {cout << (a) << endl; exit(0);} //
#define inQ(x, y, u, l, d, r) ((u) <= (x) && (l) <= (y) && (x) < (d) && (y) < (r)) //
//
template <class T> inline ll powi(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // true
    
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // true
    
template <class T> inline T getb(T set, int i) { return (set >> i) & T(1); }
template <class T> inline T smod(T n, T m) { n %= m; if (n < 0) n += m; return n; } // mod
//
template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }
template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }
#endif //
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#ifdef _MSC_VER
#include "localACL.hpp"
#endif
//using mint = modint1000000007;
using mint = modint998244353;
//using mint = modint; // mint::set_mod(m);
namespace atcoder {
inline istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
inline ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
}
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; using vvvvm = vector<vvvm>; using pim = pair<int, mint>;
#endif
#ifdef _MSC_VER // Visual Studio
#include "local.hpp"
#else // gcc
inline int popcount(int n) { return __builtin_popcount(n); }
inline int popcount(ll n) { return __builtin_popcountll(n); }
inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : -1; }
inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : -1; }
template <size_t N> inline int lsb(const bitset<N>& b) { return b._Find_first(); }
inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }
inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }
#define dump(...)
#define dumpel(v)
#define dump_list(v)
#define dump_mat(v)
#define input_from_file(f)
#define output_to_file(f)
#define Assert(b) { if (!(b)) { vc MLE(1<<30); EXIT(MLE.back()); } } // RE MLE
#endif
//O(log|ok - ng|)
/*
* okQ() ok ng
* ok
* debug_mode = true 調
*/
template <class T, class FUNC>
T meguru_search(T ok, T ng, const FUNC& okQ, bool debug_mode = false) {
// : https://twitter.com/meguru_comp/status/697008509376835584
// verify : https://atcoder.jp/contests/typical90/tasks/typical90_a
Assert(ok != ng);
#ifdef _MSC_VER
// 調
if (debug_mode) {
T step = ok < ng ? 1 : -1; T res = ok; bool is_ok = true;
for (T i = ok; i != ng + step; i += step) {
auto b = okQ(i);
if (b) {
if (!is_ok) {
cout << "not monotony!" << endl;
for (T i = ok; i != ng + step; i += step) {
cout << i << " : " << okQ(i) << endl;
}
exit(1);
}
}
else {
if (is_ok) res = i - step;
is_ok = false;
}
}
return res;
}
#endif
//
while (abs(ok - ng) > 1) {
//
T mid = (ok + ng) / 2;
// OK
if (okQ(mid)) ok = mid;
else ng = mid;
}
return ok;
/* okQ
auto okQ = [&](ll x) {
return true || false;
};
*/
}
//O(1)
/*
* a, b floor(a / b)
*/
template <class T>
T floor_div(T a, T b) {
// verify : https://atcoder.jp/contests/abc315/tasks/abc315_g
Assert(b != 0);
// -1
if (b < 0) { a *= -1; b *= -1; };
// a / b
if (a >= 0) return a / b;
//
else return -((-a + b - 1) / b);
}
//O(1)
/*
* a, b ceil(a / b)
*/
template <class T>
T ceil_div(T a, T b) {
// verify : https://atcoder.jp/contests/abc315/tasks/abc315_g
Assert(b != 0);
// -1
if (b < 0) { a *= -1; b *= -1; };
// (a + b - 1) / b
if (a >= 0) return (a + b - 1) / b;
//
else return -((-a) / b);
}
void Main() {
int n, m; ll k;
cin >> n >> m >> k;
vl y0(n), y1(n), y2(n);
rep(j, m) {
int x; ll y;
cin >> x >> y;
x--;
y0[x] += 1;
y1[x] += y;
y2[x] += y * y;
}
dump(y0); dump(y1); dump(y2);
vl b(n);
rep(i, n) {
if (y0[i] == 0) continue;
b[i] = (2 * y1[i] + y0[i]) / (2 * y0[i]);
}
dump(b);
ll b_sum = accumulate(all(b), 0LL);
dump(b_sum);
if (b_sum < k) {
dump("b_sum < k");
bool ok = false;
rep(i, n) {
if (y0[i] == 0) ok = true;
}
if (ok) {
ll res = 0;
rep(i, n) {
res += y0[i] * b[i] * b[i] - 2 * y1[i] * b[i] + y2[i];
}
cout << res << endl;
return;
}
// x : 1
auto okQ = [&](ll x) {
// B B+1 (2B+1) y0 - 2 y1
// B
// (2B+1) y0 - 2 y1 <= x
// (2B+1) y0 <= x + 2 y1
// 2 y0 B <= x + 2 y1 - y0
// B <= (x + 2 y1 - y0) / (2 y0)
ll nbsum = 0;
rep(i, n) {
ll b_max = floor_div(x + 2 * y1[i] - y0[i], 2 * y0[i]) + 1;
chmax(b_max, b[i]);
nbsum += b_max;
if (nbsum >= k) return true;
}
return false;
};
auto x = meguru_search((ll)1e18, -1LL, okQ);
dump("x:", x);
ll res = 0; ll nbsum = 0;
rep(i, n) {
ll b_max = floor_div(x + 2 * y1[i] - y0[i], 2 * y0[i]) + 1;
chmax(b_max, b[i]);
res += y0[i] * b_max * b_max - 2 * y1[i] * b_max + y2[i];
nbsum += b_max;
}
dump(res, nbsum);
res -= abs(nbsum - k) * x;
cout << res << endl;
}
else {
dump("b_sum >= k");
// x : 1
auto okQ = [&](ll x) {
// B B-1 (-2B+1) y0 + 2 y1
// B
// (-2B+1) y0 + 2 y1 <= x
// -2 y0 B <= x - 2 y1 - y0
// B >= (-x + 2 y1 + y0) / (2 y0)
ll nbsum = 0;
rep(i, n) {
ll b_min = 0;
if (y0[i] != 0) {
b_min = ceil_div(-x + 2 * y1[i] + y0[i], 2 * y0[i]) - 1;
chmax(b_min, 0LL);
chmin(b_min, b[i]);
}
dump("i:", i, "b_min:", b_min);
nbsum += b_min;
}
return nbsum <= k;
};
auto x = meguru_search((ll)1e18, -1LL, okQ);
dump("x:", x);
ll res = 0; ll nbsum = 0;
rep(i, n) {
ll b_min = 0;
if (y0[i] != 0) {
b_min = ceil_div(-x + 2 * y1[i] + y0[i], 2 * y0[i]) - 1;
chmax(b_min, 0LL);
chmin(b_min, b[i]);
}
dump("i:", i, "b_min:", b_min);
res += y0[i] * b_min * b_min - 2 * y1[i] * b_min + y2[i];
nbsum += b_min;
}
dump("res:", res, "nbsum:", nbsum);
res -= abs(k - nbsum) * x;
cout << res << endl;
}
}
int main() {
// input_from_file("input.txt");
// output_to_file("output.txt");
int t = 1;
cin >> t; //
while (t--) {
dump("------------------------------");
Main();
}
}
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