Submission #398197

#	Time	Username	Problem	Language	Result	Execution time	Memory
398197		duality	Fire (JOI20_ho_t5)	C++11	100 / 100	863 ms	66028 KiB

ho_t5

#define DEBUG 0

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

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------
#pragma GCC optimize("Ofast")

int S[200000],l[200000],r[200000];
LLI ans[200000];
struct event { int y,l,r,t,i; };
bool comp(event a,event b) {
    if (a.y == b.y) return abs(a.t) > abs(b.t);
    else return a.y < b.y;
}
vector<event> v1,v2;
vi s;
LLI bit1[400001],bit2[400001];
int update(int s,int e,int num,int N) {
    int i;
    for (i = s+1; i <= N; i += i & (-i)) bit1[i] += num,bit2[i] -= (LLI) (s-1)*num;
    for (i = e+1; i <= N; i += i & (-i)) bit1[i] -= num,bit2[i] += (LLI) e*num;
    return 0;
}
LLI query(int s,int e) {
    int i;
    LLI ans = 0;
    for (i = e+1; i > 0; i -= i & (-i)) ans += bit1[i]*e+bit2[i];
    for (i = s; i > 0; i -= i & (-i)) ans -= bit1[i]*(s-1)+bit2[i];
    return ans;
}
int main() {
    int i;
    int N,Q,T,L,R;
    scanf("%d %d",&N,&Q);
    for (i = 0; i < N; i++) scanf("%d",&S[i]);
    for (i = 0; i < Q; i++) {
        scanf("%d %d %d",&T,&L,&R);
        L--,R--;
        v1.pb((event){T,L,R,0,i});
        v2.pb((event){T,L-T,R-T,0,i});
    }

    for (i = 0; i < N; i++) {
        while (!s.empty() && (S[s.back()] < S[i])) s.pop_back();
        if (s.empty()) l[i] = -1;
        else l[i] = s.back();
        s.pb(i);
    }
    s.clear();
    for (i = N-1; i >= 0; i--) {
        while (!s.empty() && (S[s.back()] <= S[i])) s.pop_back();
        if (s.empty()) r[i] = N;
        else r[i] = s.back();
        s.pb(i);
    }
    for (i = 0; i < N; i++) {
        v1.pb((event){r[i]-i,i,r[i]-1,S[i],0});
        v1.pb((event){0,i,N-1,S[i],0});
        v1.pb((event){r[i]-i,i,N-1,-S[i],0});
        v2.pb((event){0,i+1,N-1,-S[i],0});
        v2.pb((event){r[i]-i,i+1,N-1,S[i],0});
        if (l[i] != -1) {
            v1.pb((event){r[i]-l[i]-1,i,r[i]-1,-S[i],0});
            v1.pb((event){i-l[i],i,N-1,-S[i],0});
            v1.pb((event){r[i]-l[i]-1,i,N-1,S[i],0});
            v2.pb((event){i-l[i],l[i]+1,N-1,S[i],0});
            v2.pb((event){r[i]-l[i]-1,l[i]+1,N-1,-S[i],0});
        }
    }
    sort(v1.begin(),v1.end(),comp);
    sort(v2.begin(),v2.end(),comp);
    for (i = 0; i < v1.size(); i++) {
        if (v1[i].t != 0) update(v1[i].l+N,v1[i].r+N,v1[i].t,2*N);
        else ans[v1[i].i] += query(v1[i].l+N,v1[i].r+N);
    }
    for (i = 0; i <= 2*N; i++) bit1[i] = bit2[i] = 0;
    for (i = 0; i < v2.size(); i++) {
        if (v2[i].t != 0) update(v2[i].l+N,v2[i].r+N,v2[i].t,2*N);
        else ans[v2[i].i] += query(v2[i].l+N,v2[i].r+N);
    }
    for (i = 0; i < Q; i++) printf("%lld\n",ans[i]);

    return 0;
}

Compilation message (stderr)

ho_t5.cpp: In function 'int main()':
ho_t5.cpp:123:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  123 |     for (i = 0; i < v1.size(); i++) {
      |                 ~~^~~~~~~~~~~
ho_t5.cpp:128:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  128 |     for (i = 0; i < v2.size(); i++) {
      |                 ~~^~~~~~~~~~~
ho_t5.cpp:85:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   85 |     scanf("%d %d",&N,&Q);
      |     ~~~~~^~~~~~~~~~~~~~~
ho_t5.cpp:86:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   86 |     for (i = 0; i < N; i++) scanf("%d",&S[i]);
      |                             ~~~~~^~~~~~~~~~~~
ho_t5.cpp:88:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   88 |         scanf("%d %d %d",&T,&L,&R);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 1 / 1
• Subtask 2: 6 / 6
• Subtask 3: 7 / 7
• Subtask 4: 6 / 6
• Subtask 5: 80 / 80