Submission #60832

#	Time	Username	Problem	Language	Result	Execution time	Memory
60832		duality	New Home (APIO18_new_home)	C++11	5 / 100	5106 ms	143864 KiB

new_home

#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 ----------

struct op { int time,t,x; };
bool comp(op a,op b) {
    if (a.time == b.time) return a.t < b.t;
    else return a.time < b.time;
}
vi sorted;
vector<op> oper;
multiset<int> stores[300000];
multimap<pii,int> M;
vpii tree[1 << 19];
int ans[300000];
int update(int s,int e,int as,int ae,int i,pii p) {
    if (as > ae) return 0;
    else if ((s > ae) || (e < as)) return 0;
    else if ((s >= as) && (e <= ae)) {
        tree[i].pb(p);
        return 0;
    }

    int mid = (s+e) / 2;
    update(s,mid,as,ae,2*i+1,p);
    update(mid+1,e,as,ae,2*i+2,p);
    return 0;
}
int query(int s,int e,int q,int i,pii p) {
    if ((s > q) || (e < q)) return 0;
    else if (s == e) {
        tree[i].pb(p);
        return 0;
    }

    int mid = (s+e) / 2;
    query(s,mid,q,2*i+1,p);
    query(mid+1,e,q,2*i+2,p);
    tree[i].pb(p);
    return 0;
}
int solve(int s,int e,int i) {
    int j,k;
    for (j = 0; j < tree[i].size(); j++) {
        if (tree[i][j].second < 0) {
            int p = -tree[i][j].second-1;
            for (k = 0; k < tree[i].size(); k++) {
                if (tree[i][k].second >= 0) ans[p] = max(ans[p],tree[i][k].second-abs(tree[i][j].first-tree[i][k].first));
            }
        }
    }
    if (s != e) {
        int mid = (s+e) / 2;
        solve(s,mid,2*i+1),solve(mid+1,e,2*i+2);
    }
    return 0;
}
/*map<int,int> M;
int query(int x) {
    auto it = M.lower_bound(x);
    int m = 0;
    if (it != M.end()) m = max(m,it->second-(it->first-x));
    if (it != M.begin()) it--,m = max(m,it->second-(x-it->first));
    return m;
}
int update(int x,int h) {
    //cout<<"UPDATE "<<x<<","<<h<<endl;
    if (query(x) >= h) return 0;
    //cout<<"XXX"<<endl;
    auto it = M.lower_bound(x);
    while (it != M.end()) {
        if (it->second > h-(it->first-x)) break;
        else it = M.erase(it);
    }
    M[x] = h;
    it = M.find(x);
    while (1) {
        if (it == M.begin()) break;
        it--;
        if (it->second > h-(x-it->first)) break;
        else it = M.erase(it);
    }
    return 0;
}
multiset<pii> M2;*/
int main() {
    int i;
    int n,k,q;
    int x,t,a,b,l,y;
    scanf("%d %d %d",&n,&k,&q);
    sorted.pb(0),sorted.pb(3e8);
    for (i = 0; i < n; i++) {
        scanf("%d %d %d %d",&x,&t,&a,&b);
        oper.pb((op){a,t,x});
        oper.pb((op){b+1,-t,x});
        sorted.pb(a),sorted.pb(b+1);
    }
    sort(oper.begin(),oper.end(),comp);
    sort(sorted.begin(),sorted.end());
    sorted.resize(unique(sorted.begin(),sorted.end())-sorted.begin());
    for (i = 0; i < k; i++) {
        stores[i].insert(-3e8),stores[i].insert(3e8);
        M.insert(mp(mp(0,6e8),0));
    }
    for (i = 0; i < oper.size(); i++) {
        oper[i].time = lower_bound(sorted.begin(),sorted.end(),oper[i].time)-sorted.begin();
        if (oper[i].t > 0) {
            auto it = stores[oper[i].t-1].lower_bound(oper[i].x);
            auto it2 = it;
            it2--;
            auto it3 = M.find(mp(*it+*it2,*it-*it2));
            update(0,sorted.size()-2,it3->second,oper[i].time-1,0,mp(*it+*it2,*it-*it2));
            M.erase(it3);
            M.insert(mp(mp(*it+oper[i].x,*it-oper[i].x),oper[i].time));
            M.insert(mp(mp(oper[i].x+*it2,oper[i].x-*it2),oper[i].time));
            stores[oper[i].t-1].insert(oper[i].x);
        }
        else {
            auto it = stores[-oper[i].t-1].lower_bound(oper[i].x);
            auto it2 = it;
            it2--;
            auto it3 = M.find(mp(*it+*it2,*it-*it2));
            update(0,sorted.size()-2,it3->second,oper[i].time-1,0,mp(*it+*it2,*it-*it2));
            M.erase(it3);
            it++,it2++;
            it3 = M.find(mp(*it+*it2,*it-*it2));
            update(0,sorted.size()-2,it3->second,oper[i].time-1,0,mp(*it+*it2,*it-*it2));
            M.erase(it3);
            it2--;
            M.insert(mp(mp(*it+*it2,*it-*it2),oper[i].time));
            stores[-oper[i].t-1].erase(--it);
        }
    }
    while (!M.empty()) {
        update(0,sorted.size()-2,M.begin()->second,sorted.size()-2,0,M.begin()->first);
        M.erase(M.begin());
    }
    for (i = 0; i < q; i++) {
        scanf("%d %d",&l,&y);
        int p = upper_bound(sorted.begin(),sorted.end(),y)-sorted.begin()-1;
        query(0,sorted.size()-2,p,0,mp(2*l,-(i+1)));
    }
    solve(0,sorted.size()-2,0);
    for (i = 0; i < q; i++) printf("%d\n",(ans[i] > 3e8) ? -1:ans[i]/2);

    return 0;
}

Compilation message (stderr)

new_home.cpp: In function 'int solve(int, int, int)':
new_home.cpp:97:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (j = 0; j < tree[i].size(); j++) {
                 ~~^~~~~~~~~~~~~~~~
new_home.cpp:100:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (k = 0; k < tree[i].size(); k++) {
                         ~~^~~~~~~~~~~~~~~~
new_home.cpp: In function 'int main()':
new_home.cpp:158:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < oper.size(); i++) {
                 ~~^~~~~~~~~~~~~
new_home.cpp:143:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d",&n,&k,&q);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~
new_home.cpp:146:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d",&x,&t,&a,&b);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:192:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&l,&y);
         ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 23
• Subtask 5: 0 / 35
• Subtask 6: 0 / 20