結果
| 問題 |
No.1649 Manhattan Square
|
| コンテスト | |
| ユーザー |
kwm_t
|
| 提出日時 | 2021-08-14 00:13:31 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 422 ms / 3,000 ms |
| コード長 | 2,501 bytes |
| コンパイル時間 | 4,474 ms |
| コンパイル使用メモリ | 247,936 KB |
| 実行使用メモリ | 27,972 KB |
| 最終ジャッジ日時 | 2024-10-04 01:04:35 |
| 合計ジャッジ時間 | 21,447 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 43 |
ソースコード
#include "bits/stdc++.h"
#include "atcoder/all"
using namespace std;
using namespace atcoder;
//using mint = modint1000000007;
//const int mod = 1000000007;
using mint = modint998244353;
//const int mod = 998244353;
//const int INF = 1e9;
//const long long LINF = 1e18;
//const bool debug = false;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n-1); i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r-1);i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define endl "\n"
#define P pair<long long,long long>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
struct ele {
mint c, x, y, xy;
ele(mint _c, mint _x, mint _y, mint _xy) :c(_c), x(_x), y(_y), xy(_xy) {}
};
ele op(ele a, ele b) {
ele c(a.c + b.c, a.x + b.x, a.y + b.y, a.xy + b.xy);
return c;
}
ele e() {
ele c(0, 0, 0, 0);
return c;
}
map<int, int> Compless(const vector<int> &v) {
vector<int>vv = v;
sort(all(vv));
vv.erase(unique(all(vv)), vv.end());
map<int, int>mp;
rep(i, vv.size()) { mp[vv[i]] = i; }
return mp;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n; cin >> n;
vector<P>xy(n);
rep(i, n)cin >> xy[i].first >> xy[i].second;
mint sumx = 0, sumy = 0;
rep(i, n) {
sumx += xy[i].first;
sumy += xy[i].second;
}
mint ans = 0;
rep(i, n) {
ans += xy[i].first * xy[i].first;
ans += xy[i].second * xy[i].second;
}
ans *= n;
ans -= sumx * sumx + sumy * sumy;
//kokokara
sort(all(xy));
vector<int>copyy(n);
rep(i, n)copyy[i] = xy[i].second;
auto mp = Compless(copyy);
int sz = mp.size();
segtree<ele, op, e>seg(sz);
mint anssub = 0;
rep(i, n) {
int idx = mp[xy[i].second];
{
//r
ele now = seg.prod(idx, sz);
anssub -= now.c*xy[i].first * xy[i].second;
anssub -= now.xy;
anssub += now.y * xy[i].first;
anssub += now.x * xy[i].second;
}
{
//l
ele now = seg.prod(0, idx);
anssub += now.c*xy[i].first * xy[i].second;
anssub += now.xy;
anssub -= now.y * xy[i].first;
anssub -= now.x * xy[i].second;
}
{
ele bef = seg.get(idx);
ele aft(bef.c + 1, bef.x + xy[i].first, bef.y + xy[i].second, bef.xy + xy[i].first * xy[i].second);
seg.set(idx, aft);
}
}
ans += anssub * 2;
cout << ans.val() << endl;
return 0;
}
kwm_t