Submission #667162

#	Time	Username	Problem	Language	Result	Execution time	Memory
667162		PixelCat	Sails (IOI07_sails)	C++14	100 / 100	54 ms	6132 KiB

sails

/*     code by PixelCat     */
/*         meow owo         */

#include <bits/stdc++.h>
#define int LL  //__int128
#define double long double
using namespace std;
using LL = long long;
// using i128 = __int128_t;
using ull = unsigned long long;
using pii = pair<int, int>;

#define For(i, a, b) for (int i = a; i <= b; i++)
#define Fors(i, a, b, s) for (int i = a; i <= b; i += s)
#define Forr(i, a, b) for (int i = a; i >= b; i--)
#define F first
#define S second

#define eb emplace_back
#define all(x) x.begin(), x.end()
#define sz(x) ((int)x.size())
#define mkp make_pair

#define MOD (int)(998244353)
// #define MOD (int)((LL)1'000'000'007)
#define INF (int)(4e18)
#define EPS (1e-6)

#ifdef NYAOWO
#include "/home/pixelcat/yodayo/code/meow/library/debug.hpp"
inline void USACO(const string &s) {
    cerr << "USACO: " << s << "\n";
}

#else
#define debug(...)
inline void timer() {}
inline void USACO(const string &s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

#endif

inline void NYA() {
    ios::sync_with_stdio(false);
    cin.tie(0);
}
inline int gcd(int a, int b) {
    return __gcd(a, b);
}
inline int lcm(int a, int b) {
    return a / gcd(a, b) * b;
}
int fpow(int b, int p, const int &mod = MOD) {
    int ans = 1;
    for (; p; p >>= 1, b = b * b % mod)
        if (p & 1) ans = ans * b % mod;
    return ans;
}
template <typename T>
inline void chmin(T &_a, const T &_b) {
    if (_b < _a) _a = _b;
}
template <typename T>
inline void chmax(T &_a, const T &_b) {
    if (_b > _a) _a = _b;
}
// mt19937_64 rng(
//     chrono::steady_clock::now().time_since_epoch().count());

int32_t main() {
    NYA();
    // nyaacho >/////<
    // miku sama bless me >/////<
    int n; cin >> n;
    vector<pii> v(n);
    for(auto &i:v) cin >> i.F >> i.S;
    sort(all(v));
    multiset<int> st;
    st.insert(0);
    for(auto &i:v) {
        int &h = i.F;
        int &k = i.S;
        st.insert(h);
        auto it = prev(st.lower_bound(h - k + 1));
        int a = k - (h - (*next(it))) + (*it);
        st.erase(next(it));
        st.erase(it);
        st.insert(a);
        if(*st.begin()) st.insert(0);
        // cout << st << "\n";
    }
    int ans = 0;
    int now = 0, last = 0;
    for(auto it = st.rbegin(); it != st.rend(); it++) {
        ans += (now * (now - 1) / 2) * (last - (*it));
        now++; last = (*it);
    }
    cout << ans << "\n";
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10
• Subtask 11: 10 / 10