結果

問題 No.3761 Moonlit Battle
コンテスト
ユーザー shinchan
提出日時 2026-10-09 23:55:36
言語 C++23
(gcc 15.3.0 + boost 1.92.0 + ACL)
コンパイル:
g++-15 -O2 -lm -std=c++23 -Wuninitialized -DONLINE_JUDGE -o a.out _filename_
実行:
./a.out
結果
WA  
実行時間 -
コード長 6,381 bytes
記録
記録タグの例:
初AC ショートコード 純ショートコード 純主流ショートコード 最速実行時間
コンパイル時間 2,344 ms
コンパイル使用メモリ 360,500 KB
実行使用メモリ 43,020 KB
最終ジャッジ日時 2026-10-09 23:55:49
合計ジャッジ時間 10,770 ms
ジャッジサーバーID
（参考情報） 		judge3_0 / judge1_0
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 * 3
other AC * 44 WA * 2 TLE * 1
権限があれば一括ダウンロードができます

ソースコード

diff #
raw source code 

#include <bits/stdc++.h>
using namespace std;

#define all(v) (v).begin(),(v).end()
#define pb emplace_back
#define rep(i, n) for(int i=0;i<(n);i++)
#define foa(e, v) for(auto& e : v)
#define dout(a) cout<<fixed<<setprecision(10)<<a<<'\n';
#define Cout(a) cout<<a<<'\n';

using ll = long long;
using ld = long double;
using Int = __int128;
template <class T> using pqr = priority_queue<T, vector<T>, greater<T>>;

template <typename T1, typename T2> inline bool chmax(T1 &a, T2 b) {
    bool compare = a < b;
    if(compare) a = b;
    return compare;
}
template <typename T1, typename T2> inline bool chmin(T1 &a, T2 b) {
    bool compare = a > b;
    if(compare) a = b;
    return compare;
}
template <typename T> inline T back(std::set<T> &s) {
    return *s.rbegin();
}
template <typename T> inline T back(std::multiset<T> &s) {
    return *s.rbegin();
}
template <typename T> inline T pop_back(std::set<T> &s) {
    auto it = prev(s.end());
    T val = *it;
    s.erase(it); 
    return val;
}
template <typename T> inline T pop_back(std::multiset<T> &s) {
    auto it = prev(s.end());
    T val = *it;
    s.erase(it); 
    return val;
}

const int dy[8] = {-1, 0, 0, 1, 1, -1, 1, -1};
const int dx[8] = {0, -1, 1, 0, -1, -1, 1, 1};

const ll MOD7 = 1000000007, MOD998 = 998244353, INF = (3LL << 59);
const int inf = 1 << 30;
const char br = '\n';

ll calc1(vector<ll> a, vector<ll> b, ll d) {
    ll n = a.size();
    ll ans = 0;
    rep(i, n) {
        ans += (a[i] - 1) / d * b[i];
        a[i] -= ((a[i] - 1) / d) * d;
    }
    vector<int> ord(n, 0);
    iota(all(ord), 0);
    sort(all(ord), [&](int i, int j) {
        return a[i] < a[j];
    });
    ll sum = ans;
    // cout << sum << " " << a[ord.back()] << endl;
    ans = a[ord.back()] + sum;
    for(int i = n - 1; i >= 0; i --) {
        sum += b[i];
        chmin(ans, sum + (i == 0 ? 0LL : a[i - 1]));
    }
    return ans;
}

void solve() {
    ll n, d; cin >> n >> d;
    map<ll, ll> mp;
    ll ans = 0;
    rep(i, n) {
        ll a, b; cin >> a >> b;
        mp[b] += a;
        chmax(ans, b);
    }
    vector<ll> a, b;
    for(auto [x, y] : mp) {
        a.pb(x);
        b.pb(y);
    }
    chmin(ans, calc1(a, b, d));
    
    {
        ll sum = 0;
        ll base = -1;
        n = a.size();
        for(int i = n - 1; i >= 0; i --) {
            sum += b[i];
            if(sum >= d) {
                base = a[i];
                break;
            }
        }
        priority_queue<pair<ll, ll>> pq;
        rep(i, n) pq.push({a[i], b[i]});

        sum = 0;
        while(1) {
            auto [x, y] = pq.top();
            pq.pop();
            // cout << x << " " << y << " " << base << " " << sum << endl;
            if(x <= 0) {
                chmin(ans, sum);
                break;
            }
            chmin(ans, x + sum);
            if(x > base + d * 20) {
                ll num = max(1LL, (x - (base + d * 20)) / d);
                sum += num * y;
                x -= num * d;
                pq.push({x, y});
            } else if(x < base - d * 20) break;
            else {
                sum += y;
                x -= d;
                pq.push({x, y});
            }
        }
    }

    {
        ll sum = 0;
        ll base = -1;
        n = a.size();
        for(int i = n - 1; i >= 0; i --) {
            sum += b[i];
            if(sum >= d + 1) {
                base = a[i];
                break;
            }
        }
        priority_queue<pair<ll, ll>> pq;
        rep(i, n) pq.push({a[i], b[i]});

        sum = 0;
        while(1) {
            auto [x, y] = pq.top();
            pq.pop();
            // cout << x << " " << y << " " << base << " " << sum << endl;
            if(x <= 0) {
                chmin(ans, sum);
                break;
            }
            chmin(ans, x + sum);
            if(x > base + d * 20) {
                ll num = max(1LL, (x - (base + d * 20)) / d);
                sum += num * y;
                x -= num * d;
                pq.push({x, y});
            } else if(x < base - d * 20) break;
            else {
                sum += y;
                x -= d;
                pq.push({x, y});
            }
        }
    }
     {
        ll sum = 0;
        ll base = -1;
        n = a.size();
        for(int i = n - 1; i >= 0; i --) {
            sum += b[i];
            if(sum >= d - 1) {
                base = a[i];
                break;
            }
        }
        priority_queue<pair<ll, ll>> pq;
        rep(i, n) pq.push({a[i], b[i]});

        sum = 0;
        while(1) {
            auto [x, y] = pq.top();
            pq.pop();
            // cout << x << " " << y << " " << base << " " << sum << endl;
            if(x <= 0) {
                chmin(ans, sum);
                break;
            }
            chmin(ans, x + sum);
            if(x > base + d * 20) {
                ll num = max(1LL, (x - (base + d * 20)) / d);
                sum += num * y;
                x -= num * d;
                pq.push({x, y});
            } else if(x < base - d * 20) break;
            else {
                sum += y;
                x -= d;
                pq.push({x, y});
            }
        }
    }
      {
        ll sum = 0;
        ll base = -1;
        n = a.size();
        for(int i = n - 1; i >= 0; i --) {
            sum += b[i];
            if(sum >= d) {
                break;
            }
            base = a[i];
        }
        priority_queue<pair<ll, ll>> pq;
        rep(i, n) pq.push({a[i], b[i]});

        sum = 0;
        while(1) {
            auto [x, y] = pq.top();
            pq.pop();
            // cout << x << " " << y << " " << base << " " << sum << endl;
            if(x <= 0) {
                chmin(ans, sum);
                break;
            }
            chmin(ans, x + sum);
            if(x > base + d * 20) {
                ll num = max(1LL, (x - (base + d * 20)) / d);
                sum += num * y;
                x -= num * d;
                pq.push({x, y});
            } else if(x < base - d * 20) break;
            else {
                sum += y;
                x -= d;
                pq.push({x, y});
            }
        }
    }
    cout << ans << endl;
    
    
}

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int testcase = 1; 
    // cin >> testcase;
    while(testcase --) solve();

    return 0;
}
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