Submission #879855

#	Time	Username	Problem	Language	Result	Execution time	Memory
879855		efedmrlr	Fire (JOI20_ho_t5)	C++17	0 / 100	650 ms	77776 KiB

ho_t5

#include <bits/stdc++.h>

using namespace std;

#define n_l '\n'
#define dbg(...) cout << "[" << #__VA_ARGS__ << "]: "; cout << to_string(__VA_ARGS__) << endl
template <typename T, size_t N> int SIZE(const T (&t)[N]){ return N; } template<typename T> int SIZE(const T &t){ return t.size(); } string to_string(const string s, int x1=0, int x2=1e9){ return '"' + ((x1 < s.size()) ? s.substr(x1, x2-x1+1) : "") + '"'; } string to_string(const char* s) { return to_string((string) s); } string to_string(const bool b) { return (b ? "true" : "false"); } string to_string(const char c){ return string({c}); } template<size_t N> string to_string(const bitset<N> &b, int x1=0, int x2=1e9){ string t = ""; for(int __iii__ = min(x1,SIZE(b)),  __jjj__ = min(x2, SIZE(b)-1); __iii__ <= __jjj__; ++__iii__){ t += b[__iii__] + '0'; } return '"' + t + '"'; } template <typename A, typename... C> string to_string(const A (&v), int x1=0, int x2=1e9, C... coords); int l_v_l_v_l = 0, t_a_b_s = 0; template <typename A, typename B> string to_string(const pair<A, B> &p) { l_v_l_v_l++; string res = "(" + to_string(p.first) + ", " + to_string(p.second) + ")"; l_v_l_v_l--; return res; } template <typename A, typename... C> string to_string(const A (&v), int x1, int x2, C... coords) { int rnk = rank<A>::value; string tab(t_a_b_s, ' '); string res = ""; bool first = true; if(l_v_l_v_l == 0) res += n_l; res += tab + "["; x1 = min(x1, SIZE(v)), x2 = min(x2, SIZE(v)); auto l = begin(v); advance(l, x1); auto r = l; advance(r, (x2-x1) + (x2 < SIZE(v))); for (auto e = l; e != r; e = next(e)) { if (!first) { res += ", "; } first = false; l_v_l_v_l++; if(e != l){ if(rnk > 1) { res += n_l; t_a_b_s = l_v_l_v_l; }; } else{ t_a_b_s = 0; } res += to_string(*e, coords...); l_v_l_v_l--; } res += "]"; if(l_v_l_v_l == 0) res += n_l; return res; } void dbgm(){;} template<typename Heads, typename... Tails> void dbgm(Heads H, Tails... T){ cout << to_string(H) << " | "; dbgm(T...); } 
#define dbgm(...) cout << "[" << #__VA_ARGS__ << "]: "; dbgm(__VA_ARGS__); cout << endl


#define int long long int
#define MP make_pair
#define pb push_back
#define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
}


const double EPS = 0.00001;
const int INF = 1e16;
const int N = 2e5+5;
const int ALPH = 26;
const int LGN = 20;
const int MOD = 1e9+7;
int n,m,q;

int lastBIT(int x) {
    return x & (-x);
}

struct BITree {
    vector<int> data;
    int sz;
    BITree(int sz) {
        data.assign(sz + 5, 0);
        this->sz = sz;
    }
    void update(int ind, int val) {
        ind++;
        while(ind <= sz) {
            data[ind] += val;
            ind = ind + lastBIT(ind);
        }
    }
    
    int query(int ind) {
        ind++;
        int ret = 0ll;
        while(ind > 0ll) {
            ret += data[ind];
            ind = ind - lastBIT(ind);
        }
        return ret;
    }
    int query(int l, int r) {
        return query(r) - query(l - 1ll);
    }
    void set_el(int ind, int val) {
        update(ind, val - query(ind, ind));
    } 
};
struct Event {
    int t, el, type;
    Event() {
        t = 0; el = 0; type = 0;
    }
    Event(int tm, int e, int ty) {
        t = tm;
        el = e;
        type = ty;
    }
    const bool operator<(const Event &oth) {
        return t < oth.t;
    }
    void print() {
        cout<<"time: "<<t<<" el:"<<el<<" type: "<<type;
        cout<<"\n";
    }
};
struct Query {
    int t, l,r, ind;
    Query() {
        t = 0; l = 0; r = 0; ind = 0;
    }
    Query(int tm, int lf, int rg, int id) {
        t = tm; l = lf; r = rg; ind = id;
    }
    const bool operator<(const Query &oth) {
        return t < oth.t;
    }
    void input(int id) {
        cin>>t>>l>>r;
        ind = id;
    }
    void print() {
        dbg(t); dbg(l); dbg(r); dbg(ind);
    }
};
vector<Event> evs;
/*
type 1 = expansion to stable
type 2 = stable to decay
type 3 = decay to death
times are the start time of coming phase
*/
vector<Query> que;
vector<int> s;
vector<int> lg, rg;
void getEvents() {
    evs.clear();
    for(int i = 1; i<=n; i++) {
        int ev1 = min(rg[i] - i, i - lg[i]), ev2 = max(rg[i] - i, i - lg[i]);
        int ev3 = rg[i] - lg[i];
        evs.pb(Event(ev1, i, 1));
        evs.pb(Event(ev2, i, 2));
        evs.pb(Event(ev3, i, 3));
    }
    sort(evs.rbegin(), evs.rend());
}
void find_greater() {
    set<int> st;
    vector<array<int,2> > sc(n);
    for(int i = 1; i<=n; i++) {
        sc[i - 1] = {s[i], i};
    }
    sort(sc.rbegin(), sc.rend());

    st.insert(0); st.insert(n + 1);
    for(auto c : sc) {
        rg[c[1]] = *st.upper_bound(c[1]);
        st.insert(c[1]); 
    }
    st.clear();
    st.insert(-INF); st.insert(n + 1);
    for(auto c : sc) {
        lg[c[1]] = *prev(st.upper_bound(c[1]));
        st.insert(c[1]); 
    }

}
vector<int> anc[LGN];
void calc_anc() {
    for(int i = 0; i<LGN; i++) {
        anc[i].assign(n+3, 0);
    }
    for(int i = 1; i<=n; i++) {
        if(lg[i] == -INF) anc[0][i] = 0ll;
        else anc[0][i] = lg[i];

    }
    for(int k = 1; k<LGN; k++) {
        for(int i = 1; i<=n; i++) {
            anc[k][i] = anc[k - 1][anc[k - 1][i]];
        }
    }
}
int find_anc(int node, int cap) {
    for(int i = LGN - 1; i>=0; i--) {
        if(anc[i][node] != 0 && anc[i][node] >= cap) {
            node = anc[i][node];
        }
    }
    return node;
}

int calcRBound(int tm, int r, BITree &expand, BITree &stable, BITree &decay, BITree &decay_t) {
    int edge = find_anc(r, r - tm);
    // dbg(tm); dbg(r);
    // dbg(edge);
    int ret = 0;
    if(edge > 1) {
        ret += expand.query(edge - 1ll) * (tm + 1ll);
        ret += stable.query(edge - 1ll);
        ret += decay.query(edge - 1ll);
        ret += decay_t.query(edge - 1ll) * tm; 
    }
    int edger = r;
    int edgel = edge;
    if(anc[0][edgel] != 0ll) {
        edgel = anc[0][edgel] + tm + 1ll;
    }
    // dbg(ret);
    ret += s[edge] * max(0ll, edger - edgel + 1ll);
    // dbg(s[edge] * max(0ll, edger - edgel + 1));
    
    return ret;
}

int calcQuery(Query cur, BITree &expand, BITree &stable, BITree &decay, BITree &decay_t) {
    return calcRBound(cur.t, cur.r, expand, stable, decay, decay_t) - 
        (cur.l < 2 ? 0ll : calcRBound(cur.t, cur.l - 1, expand, stable, decay, decay_t)); 
}

inline void solve() {
    cin>>n>>q;
    s.assign(n+3, 0);
    lg.assign(n+3, 0);
    rg.assign(n+3, 0);
    que.assign(q, Query());
    REP(i,n) cin>>s[i + 1];
    REP(i,q) que[i].input(i + 1);
    sort(que.begin(), que.end());
    find_greater();
    getEvents();
    calc_anc();
    // dbg(lg); dbg(rg);
    BITree expand(n + 3), stable(n + 3), decay(n + 3), decay_t(n + 3); 
    vector<int> res(q+3, 0);
    for(int i = 1; i<=n; i++) {
        expand.set_el(i, s[i]);
    }
    // for(int i = 0; i<evs.size(); i++) evs[i].print();
    for(auto cur : que) {

        //adjust Events
        // cur.print();
        while(evs.size() && cur.t >= evs.back().t) {
            auto ev = evs.back();
            evs.pop_back();
            if(ev.type == 1) {
                expand.set_el(ev.el, 0);
                stable.set_el(ev.el, ev.t * s[ev.el]);
            }   
            else if(ev.type == 2) {
                decay.set_el(ev.el, (ev.t - 1) * s[ev.el]) ;
                decay_t.set_el(ev.el, -1ll * s[ev.el]);
            }   
            else if(ev.type == 3) {
                stable.set_el(ev.el, 0);
                decay.set_el(ev.el, 0);
                decay_t.set_el(ev.el, 0);
            } 
            else {
                // ev.print();
                assert(0);
            }      
        }
        // cout<<"events done"<<endl;
        res[cur.ind] = calcQuery(cur, expand, stable, decay, decay_t);
    }
    for(int i = 1; i<=q; i++) {
        cout<<res[i]<<"\n";
    }
}
 
signed main() {
    //fastio();
    int test = 1;
    //cin>>test;
    while(test--) {
        solve();
    }
    
}

Compilation message (stderr)

ho_t5.cpp: In function 'std::string to_string(std::string, int, int)':
ho_t5.cpp:7:208: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | template <typename T, size_t N> int SIZE(const T (&t)[N]){ return N; } template<typename T> int SIZE(const T &t){ return t.size(); } string to_string(const string s, int x1=0, int x2=1e9){ return '"' + ((x1 < s.size()) ? s.substr(x1, x2-x1+1) : "") + '"'; } string to_string(const char* s) { return to_string((string) s); } string to_string(const bool b) { return (b ? "true" : "false"); } string to_string(const char c){ return string({c}); } template<size_t N> string to_string(const bitset<N> &b, int x1=0, int x2=1e9){ string t = ""; for(int __iii__ = min(x1,SIZE(b)),  __jjj__ = min(x2, SIZE(b)-1); __iii__ <= __jjj__; ++__iii__){ t += b[__iii__] + '0'; } return '"' + t + '"'; } template <typename A, typename... C> string to_string(const A (&v), int x1=0, int x2=1e9, C... coords); int l_v_l_v_l = 0, t_a_b_s = 0; template <typename A, typename B> string to_string(const pair<A, B> &p) { l_v_l_v_l++; string res = "(" + to_string(p.first) + ", " + to_string(p.second) + ")"; l_v_l_v_l--; return res; } template <typename A, typename... C> string to_string(const A (&v), int x1, int x2, C... coords) { int rnk = rank<A>::value; string tab(t_a_b_s, ' '); string res = ""; bool first = true; if(l_v_l_v_l == 0) res += n_l; res += tab + "["; x1 = min(x1, SIZE(v)), x2 = min(x2, SIZE(v)); auto l = begin(v); advance(l, x1); auto r = l; advance(r, (x2-x1) + (x2 < SIZE(v))); for (auto e = l; e != r; e = next(e)) { if (!first) { res += ", "; } first = false; l_v_l_v_l++; if(e != l){ if(rnk > 1) { res += n_l; t_a_b_s = l_v_l_v_l; }; } else{ t_a_b_s = 0; } res += to_string(*e, coords...); l_v_l_v_l--; } res += "]"; if(l_v_l_v_l == 0) res += n_l; return res; } void dbgm(){;} template<typename Heads, typename... Tails> void dbgm(Heads H, Tails... T){ cout << to_string(H) << " | "; dbgm(T...); }
      |                                                                                                                                                                                                             ~~~^~~~~~~~~~
ho_t5.cpp: In function 'void solve()':
ho_t5.cpp:14:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   14 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
ho_t5.cpp:203:5: note: in expansion of macro 'REP'
  203 |     REP(i,n) cin>>s[i + 1];
      |     ^~~
ho_t5.cpp:14:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   14 | #define REP(i,n) for(int (i) = 0; (i) < (n); (i)++)
      |                          ^
ho_t5.cpp:204:5: note: in expansion of macro 'REP'
  204 |     REP(i,q) que[i].input(i + 1);
      |     ^~~

• Subtask 1: 0 / 1
• Subtask 2: 0 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 6
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