oj.uz

Submission #232078

# Submission time Handle Problem Language Result Execution time Memory
232078 2020-05-16T01:23:15 Z duality Sweeping (JOI20_sweeping) C++11
100 / 100
 12627 ms 249792 KB 
#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 ----------

int X[1500000],Y[1500000],A[1500000];
vpii updates,queries;
pii ans[1500000];
class comp1 {
    public:
        bool operator()(int a,int b) {
            if (ans[a].first == ans[b].first) return a < b;
            else return ans[a].first < ans[b].first;
        }
};
class comp2 {
    public:
        bool operator()(int a,int b) {
            if (ans[a].second == ans[b].second) return a < b;
            else return ans[a].second < ans[b].second;
        }
};
set<int,comp1> S1[1500000];
set<int,comp2> S2[1500000];
map<int,int> MM;
int findAns(int l,int r,vi q,int N) {
    if (q.empty()) return 0;
    int i;
    vi c;
    for (i = 0; i < q.size(); i++) {
        int s = A[queries[q[i]].first],e = queries[q[i]].second;
        if ((e < l) || (s > r)) continue;
        if ((l >= s) && (r <= e)) S1[0].insert(q[i]),S2[0].insert(q[i]);
        else c.pb(q[i]);
    }
    if (!S1[0].empty()) {
        MM[0] = 0,MM[N] = -1;
        int x = 1;
        for (i = l; i <= r; i++) {
            if (MM.count(updates[i].second)) continue;
            int u = (--MM.lower_bound(updates[i].second))->second;
            MM[updates[i].second] = x++;
            if (updates[i].first == 1) {
                auto it = S2[u].begin(),it2 = S2[u].end();
                int f = -1;
                while (1) {
                    if ((it != S2[u].end()) && (ans[*it].second < N-updates[i].second)) it++;
                    else {
                        f = 0;
                        break;
                    }
                    if ((it2 == S2[u].begin()) || (ans[*(--it2)].second < N-updates[i].second)) {
                        f = 1;
                        break;
                    }
                }
                if (f) {
                    swap(S1[u],S1[x-1]),swap(S2[u],S2[x-1]);
                    it2 = S2[x-1].end();
                    while ((it2 != S2[x-1].begin()) && (ans[*(--it2)].second >= N-updates[i].second)) {
                        S1[u].insert(*it2),S2[u].insert(*it2);
                        S1[x-1].erase(*it2),it2 = S2[x-1].erase(it2);
                    }
                }
                else {
                    it = S2[u].begin();
                    while ((it != S2[u].end()) && (ans[*it].second < N-updates[i].second)) {
                        S1[x-1].insert(*it),S2[x-1].insert(*it);
                        S1[u].erase(*it),it = S2[u].erase(it);
                    }
                }
            }
            else {
                auto it = S1[u].begin(),it2 = S1[u].end();
                int f = -1;
                while (1) {
                    if ((it != S1[u].end()) && (ans[*it].first < updates[i].second)) it++;
                    else {
                        f = 0;
                        break;
                    }
                    if ((it2 == S1[u].begin()) || (ans[*(--it2)].first < updates[i].second)) {
                        f = 1;
                        break;
                    }
                }
                if (f) {
                    it2 = S1[u].end();
                    while ((it2 != S1[u].begin()) && (ans[*(--it2)].first >= updates[i].second)) {
                        S1[x-1].insert(*it2),S2[x-1].insert(*it2);
                        S2[u].erase(*it2),it2 = S1[u].erase(it2);
                    }
                }
                else {
                    swap(S1[u],S1[x-1]),swap(S2[u],S2[x-1]);
                    it = S1[x-1].begin();
                    while ((it != S1[x-1].end()) && (ans[*it].first < updates[i].second)) {
                        S1[u].insert(*it),S2[u].insert(*it);
                        S2[x-1].erase(*it),it = S1[x-1].erase(it);
                    }
                }
            }
        }
        for (auto it = MM.begin(); it->second != -1; it++) {
            auto it2 = it;
            it2++;
            int x1 = it->first,x2 = it2->first;
            for (auto it3 = S1[it->second].begin(); it3 != S1[it->second].end(); it3++) {
                ans[*it3].first = max(ans[*it3].first,x1);
                ans[*it3].second = max(ans[*it3].second,N-x2);
            }
            S1[it->second].clear(),S2[it->second].clear();
        }
        MM.clear();
    }
    if (l != r) {
        int m = (l+r) / 2;
        findAns(l,m,c,N),findAns(m+1,r,c,N);
    }
    return 0;
}
int main() {
    int i;
    int N,M,Q;
    int T,P,L;
    scanf("%d %d %d",&N,&M,&Q);
    for (i = 0; i < M; i++) scanf("%d %d",&X[i],&Y[i]),A[i] = 0;
    for (i = 0; i < Q; i++) {
        scanf("%d",&T);
        if (T == 1) {
            scanf("%d",&P),P--;
            queries.pb(mp(P,(int) updates.size()-1));
        }
        else if (T == 2) {
            scanf("%d",&L);
            updates.pb(mp(1,N-L));
        }
        else if (T == 3) {
            scanf("%d",&L);
            updates.pb(mp(2,L+1));
        }
        else {
            scanf("%d %d",&X[M],&Y[M]);
            A[M++] = updates.size();
        }
    }
    vi q;
    for (i = 0; i < queries.size(); i++) ans[i] = mp(X[queries[i].first],Y[queries[i].first]),q.pb(i);
    findAns(0,(int) updates.size()-1,q,N+1);
    for (i = 0; i < queries.size(); i++) printf("%d %d\n",ans[i].first,ans[i].second);

    return 0;
}

Compilation message

sweeping.cpp: In function 'int findAns(int, int, vi, int)':
sweeping.cpp:82:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < q.size(); i++) {
                 ~~^~~~~~~~~~
sweeping.cpp: In function 'int main()':
sweeping.cpp:200:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < queries.size(); i++) ans[i] = mp(X[queries[i].first],Y[queries[i].first]),q.pb(i);
                 ~~^~~~~~~~~~~~~~~~
sweeping.cpp:202:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < queries.size(); i++) printf("%d %d\n",ans[i].first,ans[i].second);
                 ~~^~~~~~~~~~~~~~~~
sweeping.cpp:178:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d",&N,&M,&Q);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~
sweeping.cpp:179:55: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (i = 0; i < M; i++) scanf("%d %d",&X[i],&Y[i]),A[i] = 0;
                             ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
sweeping.cpp:181:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&T);
         ~~~~~^~~~~~~~~
sweeping.cpp:183:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&P),P--;
             ~~~~~~~~~~~~~~^~~~
sweeping.cpp:187:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&L);
             ~~~~~^~~~~~~~~
sweeping.cpp:191:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&L);
             ~~~~~^~~~~~~~~
sweeping.cpp:195:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d %d",&X[M],&Y[M]);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 141676 KB Output is correct
2 Correct 100 ms 141560 KB Output is correct
3 Correct 83 ms 141432 KB Output is correct
4 Correct 97 ms 141688 KB Output is correct
5 Correct 82 ms 141436 KB Output is correct
6 Correct 87 ms 141592 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12627 ms 215644 KB Output is correct
2 Correct 12160 ms 215628 KB Output is correct
3 Correct 12186 ms 215720 KB Output is correct
4 Correct 5432 ms 214988 KB Output is correct
5 Correct 5632 ms 215372 KB Output is correct
6 Correct 7096 ms 249792 KB Output is correct
7 Correct 11294 ms 215880 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 10135 ms 206196 KB Output is correct
2 Correct 8779 ms 223072 KB Output is correct
3 Correct 5639 ms 222064 KB Output is correct
4 Correct 5007 ms 222552 KB Output is correct
5 Correct 9196 ms 222600 KB Output is correct
6 Correct 9227 ms 222760 KB Output is correct

Subtask #4
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 10135 ms 206196 KB Output is correct
2 Correct 8779 ms 223072 KB Output is correct
3 Correct 5639 ms 222064 KB Output is correct
4 Correct 5007 ms 222552 KB Output is correct
5 Correct 9196 ms 222600 KB Output is correct
6 Correct 9227 ms 222760 KB Output is correct
7 Correct 11910 ms 222860 KB Output is correct
8 Correct 12031 ms 223068 KB Output is correct
9 Correct 11635 ms 222776 KB Output is correct
10 Correct 6044 ms 222276 KB Output is correct
11 Correct 5332 ms 204872 KB Output is correct
12 Correct 9564 ms 204840 KB Output is correct
13 Correct 8423 ms 204684 KB Output is correct
14 Correct 285 ms 153196 KB Output is correct
15 Correct 690 ms 196560 KB Output is correct
16 Correct 11396 ms 204868 KB Output is correct
17 Correct 5421 ms 234960 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 141676 KB Output is correct
2 Correct 100 ms 141560 KB Output is correct
3 Correct 83 ms 141432 KB Output is correct
4 Correct 97 ms 141688 KB Output is correct
5 Correct 82 ms 141436 KB Output is correct
6 Correct 87 ms 141592 KB Output is correct
7 Correct 12627 ms 215644 KB Output is correct
8 Correct 12160 ms 215628 KB Output is correct
9 Correct 12186 ms 215720 KB Output is correct
10 Correct 5432 ms 214988 KB Output is correct
11 Correct 5632 ms 215372 KB Output is correct
12 Correct 7096 ms 249792 KB Output is correct
13 Correct 11294 ms 215880 KB Output is correct
14 Correct 10135 ms 206196 KB Output is correct
15 Correct 8779 ms 223072 KB Output is correct
16 Correct 5639 ms 222064 KB Output is correct
17 Correct 5007 ms 222552 KB Output is correct
18 Correct 9196 ms 222600 KB Output is correct
19 Correct 9227 ms 222760 KB Output is correct
20 Correct 11910 ms 222860 KB Output is correct
21 Correct 12031 ms 223068 KB Output is correct
22 Correct 11635 ms 222776 KB Output is correct
23 Correct 6044 ms 222276 KB Output is correct
24 Correct 5332 ms 204872 KB Output is correct
25 Correct 9564 ms 204840 KB Output is correct
26 Correct 8423 ms 204684 KB Output is correct
27 Correct 285 ms 153196 KB Output is correct
28 Correct 690 ms 196560 KB Output is correct
29 Correct 11396 ms 204868 KB Output is correct
30 Correct 5421 ms 234960 KB Output is correct
31 Correct 8430 ms 194324 KB Output is correct
32 Correct 11788 ms 215724 KB Output is correct
33 Correct 11360 ms 215864 KB Output is correct
34 Correct 8768 ms 204136 KB Output is correct
35 Correct 8167 ms 202820 KB Output is correct
36 Correct 6607 ms 214940 KB Output is correct
37 Correct 5274 ms 207800 KB Output is correct
38 Correct 9508 ms 218692 KB Output is correct
39 Correct 10061 ms 215496 KB Output is correct
40 Correct 11519 ms 215688 KB Output is correct