結果
問題 | No.776 A Simple RMQ Problem |
ユーザー |
|
提出日時 | 2019-01-24 22:02:15 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 491 ms / 3,000 ms |
コード長 | 5,056 bytes |
コンパイル時間 | 2,005 ms |
コンパイル使用メモリ | 183,780 KB |
実行使用メモリ | 17,668 KB |
最終ジャッジ日時 | 2024-09-16 04:44:07 |
合計ジャッジ時間 | 11,545 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 26 |
ソースコード
#define _USE_MATH_DEFINES#include "bits/stdc++.h"using namespace std;#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))#define rep(i,j) FOR(i,0,j)#define each(x,y) for(auto &(x):(y))#define mp make_pair#define MT make_tuple#define all(x) (x).begin(),(x).end()#define debug(x) cout<<#x<<": "<<(x)<<endl#define smax(x,y) (x)=max((x),(y))#define smin(x,y) (x)=min((x),(y))#define MEM(x,y) memset((x),(y),sizeof (x))#define sz(x) (int)(x).size()#define RT returnusing ll = long long;using pii = pair<int, int>;using vi = vector<int>;using vll = vector<ll>;template<class P, class Q>struct LazySegTree {int dataSize;vector<P> value;vector<Q> lazy;function<P(P, P)> f;function<P(P, Q)> g;function<Q(Q, Q)> h;LazySegTree(vector<P> dat,function<P(P, P)> f_, function<P(P, Q)> g_, function<Q(Q, Q)> h_){f = f_;g = g_;h = h_;dataSize = 1;int n = (int)dat.size();while (dataSize < n)dataSize *= 2;int treeSize = 2 * dataSize;value = vector<P>(treeSize, P());lazy = vector<Q>(treeSize, Q());for (int i = 0; i < n; ++i) {value[dataSize + i] = dat[i];}for (int i = dataSize - 1; i >= 0; --i) {value[i] = f(value[i * 2], value[i * 2 + 1]);}}void propagate(int index, int curL, int curR) {if (lazy[index] != Q()) {int left = index * 2, right = index * 2 + 1;value[index] = g(value[index], lazy[index]);if (curR - curL > 1) {lazy[left] = h(lazy[left], lazy[index]);lazy[right] = h(lazy[right], lazy[index]);}lazy[index] = Q();}}void update(int index, int curL, int curR, int givenL, int givenR, Q x) {propagate(index, curL, curR);if (curR <= givenL || givenR <= curL)return;if (givenL <= curL && curR <= givenR) {lazy[index] = h(lazy[index], x);propagate(index, curL, curR);} else {int mid = (curL + curR) / 2;update(index * 2, curL, mid, givenL, givenR, x);update(index * 2 + 1, mid, curR, givenL, givenR, x);value[index] = f(value[index * 2], value[index * 2 + 1]);}}void update(int l, int r, Q x) {update(1, 0, dataSize, l, r, x);}P query(int l, int r) {return query(1, 0, dataSize, l, r);}P query(int index, int curL, int curR, int givenL, int givenR) {if (curR <= givenL || givenR <= curL)return P();propagate(index, curL, curR);if (givenL <= curL && curR <= givenR) {return value[index];} else {int mid = (curL + curR) / 2;P resL = query(index * 2, curL, mid, givenL, givenR);P resR = query(index * 2 + 1, mid, curR, givenL, givenR);return f(resL, resR);}}};struct P {ll mi, ma, mm;P() {mi = LLONG_MAX / 3;ma = LLONG_MIN / 3;mm = LLONG_MIN / 3;}P(ll a, ll b, ll c):mi(a),ma(b),mm(c){}};P f(P l, P r) {return P(min(l.mi, r.mi), max(l.ma, r.ma), max(r.ma - l.mi, max(l.mm, r.mm)));}P g(P p, ll q) {p.mi += q;p.ma += q;return p;}void solve() {int N, Q;cin >> N >> Q;vll a(N), sm(N + 1);rep(i, N) {cin >> a[i];sm[i + 1] = sm[i] + a[i];}vector<P> ps(N + 1);rep(i, N + 1)ps[i] = P(sm[i], sm[i], LLONG_MIN/3);LazySegTree<P, ll> lst(ps, f, g, plus<ll>());rep(hoge, Q) {string s;cin >> s;if (s == "max") {int L1, L2, R1, R2;cin >> L1 >> L2 >> R1 >> R2;ll ans = LLONG_MIN;if (L2 <= R1) {ans = lst.query(R1, R2 + 1).ma - lst.query(L1 - 1, L2).mi;} else if (L1 <= R1 && R2 <= L2) {smax(ans, lst.query(R1, R2 + 1).ma - lst.query(L1 - 1, R1).mi);smax(ans, lst.query(R1 - 1, R2 + 1).mm);} else if (R1 <= L1 && L2 <= R2) {smax(ans, lst.query(L2, R2 + 1).ma - lst.query(L1 - 1, L2).mi);smax(ans, lst.query(L1 - 1, L2 + 1).mm);} else if (R1 <= L1) {ans = lst.query(L1 - 1, R2 + 1).mm;}else {if (L2 <= R2) {smax(ans, lst.query(L2, R2 + 1).ma - lst.query(L1 - 1, L2).mi);}if (L1 <= R1) {smax(ans, lst.query(R1, R2 + 1).ma - lst.query(L1 - 1, R1).mi);}smax(ans, lst.query(R1 - 1, L2 + 1).mm);}cout << ans << endl;} else {int i, x;cin >> i >> x;ll d = x - a[i - 1];lst.update(i, N + 1, d);a[i - 1] = x;}}}int main() {ios::sync_with_stdio(false);cin.tie(0);cout << fixed << setprecision(15);solve();return 0;}