oj.uz

Submission #62780

# Submission time Handle Problem Language Result Execution time Memory
62780 2018-07-30T03:46:24 Z jjwdi0 None (KOI18_matrix) C++11
29 / 100
 158 ms 3892 KB 
#include <bits/stdc++.h>
#define ROOT 4
using namespace std;
using pr = pair<int, int>;
using tr = pair<int, pr>;
using ll = long long;

int R, N, ans;
pr A[200005];
tr B[200005];
vector<int> v;
int comp[200005], comp_y[200005];
vector<int> comp2[ROOT];

struct seg_tree {
    int tree[ROOT*4], base;
    void init(int x) { for(base=1; base<x; base<<=1); for(int i=1; i<=base*2; i++) tree[i] = 0; }
    void update(int x, int y) {
        x += base - 1;
        tree[x] = y, x /= 2;
        while(x) tree[x] = max(tree[x*2], tree[x*2+1]), x /= 2;
    }
    int RMQ(int s, int e) {
        s += base - 1, e += base - 1;
        int res = 0;
        while(s < e) {
            if(s & 1) res = max(res, tree[s++]);
            if(!(e & 1)) res = max(res, tree[e--]);
            s >>= 1, e >>= 1;
        }
        if(s == e) res = max(res, tree[s]);
        return res;
    }
} S[ROOT];

vector<tr> bucket[ROOT];

int main() {
    scanf("%d %d", &R, &N);
    if(R == 2) {
        for(int i=1; i<=N; i++) scanf("%d", &A[i].first);
        for(int i=1; i<=N; i++) scanf("%d", &A[i].second);
        sort(A+1, A+N+1);
        for(int i=1; i<=N; i++) {
            auto it = lower_bound(v.begin(), v.end(), A[i].second);
            if(it == v.end()) v.push_back(A[i].second);
            else *it = A[i].second;
        }
        printf("%d\n", v.size());
    }
    else {
        for(int i=0; i<=N/ROOT; i++) S[i].init(ROOT + 1);
        for(int i=1; i<=N; i++) scanf("%d", &B[i].first);
        for(int i=1; i<=N; i++) scanf("%d", &B[i].second.first);
        for(int i=1; i<=N; i++) scanf("%d", &B[i].second.second);
        sort(B+1, B+N+1);
        for(int i=1; i<=N; i++) comp[i] = B[i].second.first;
        sort(comp+1, comp+N+1);
        for(int i=1; i<=N; i++) B[i].second.first = (int)( lower_bound(comp+1, comp+N+1, B[i].second.first) - comp );
        for(int i=1; i<=N; i++) comp[i] = B[i].second.second;
        sort(comp+1, comp+N+1);
        for(int i=1; i<=N; i++) B[i].second.second = (int)( lower_bound(comp+1, comp+N+1, B[i].second.second) - comp );

        int ans = 0;

        for(int i=1; i<=N; i++) comp2[B[i].second.first/ROOT].push_back(B[i].second.second);
        for(int i=0; i<=N/ROOT; i++) sort(comp2[i].begin(), comp2[i].end());
        for(int i=1; i<=N; i++) comp_y[i] = (int)(lower_bound(comp2[B[i].second.first/ROOT].begin(), comp2[B[i].second.first/ROOT].end(), B[i].second.second) - comp2[B[i].second.first/ROOT].begin()) + 1;

        for(int i=1; i<=N; i++) {
            int idx = B[i].second.first / ROOT;
            int mx = 1;
            for(int j=0; j<idx; j++) {
                mx = max(mx, S[j].RMQ(1, (int)(upper_bound(comp2[j].begin(), comp2[j].end(), B[i].second.second) - comp2[j].begin()) ) + 1);
            }
            for(auto it : bucket[idx]) {
                if(it.second.first < B[i].second.first && it.second.second < B[i].second.second) mx = max(mx, it.first + 1);
            }
            bucket[idx].push_back(tr(mx, B[i].second));
            S[idx].update(comp_y[i], mx);
            ans = max(ans, mx);
        }
        printf("%d\n", ans);
    }
}

Compilation message

matrix.cpp: In function 'int main()':
matrix.cpp:49:32: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
         printf("%d\n", v.size());
                        ~~~~~~~~^
matrix.cpp:39:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &R, &N);
     ~~~~~^~~~~~~~~~~~~~~~~
matrix.cpp:41:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         for(int i=1; i<=N; i++) scanf("%d", &A[i].first);
                                 ~~~~~^~~~~~~~~~~~~~~~~~~
matrix.cpp:42:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         for(int i=1; i<=N; i++) scanf("%d", &A[i].second);
                                 ~~~~~^~~~~~~~~~~~~~~~~~~~
matrix.cpp:53:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         for(int i=1; i<=N; i++) scanf("%d", &B[i].first);
                                 ~~~~~^~~~~~~~~~~~~~~~~~~
matrix.cpp:54:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         for(int i=1; i<=N; i++) scanf("%d", &B[i].second.first);
                                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
matrix.cpp:55:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         for(int i=1; i<=N; i++) scanf("%d", &B[i].second.second);
                                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 376 KB Output is correct
2 Correct 10 ms 496 KB Output is correct
3 Correct 8 ms 496 KB Output is correct
4 Correct 10 ms 564 KB Output is correct
5 Correct 8 ms 564 KB Output is correct
6 Correct 11 ms 672 KB Output is correct
7 Correct 8 ms 672 KB Output is correct

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 15 ms 1488 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 376 KB Output is correct
2 Correct 10 ms 496 KB Output is correct
3 Correct 8 ms 496 KB Output is correct
4 Correct 10 ms 564 KB Output is correct
5 Correct 8 ms 564 KB Output is correct
6 Correct 11 ms 672 KB Output is correct
7 Correct 8 ms 672 KB Output is correct
8 Correct 126 ms 2748 KB Output is correct
9 Correct 145 ms 2748 KB Output is correct
10 Correct 158 ms 3064 KB Output is correct
11 Correct 113 ms 3064 KB Output is correct
12 Correct 128 ms 3064 KB Output is correct
13 Correct 134 ms 3504 KB Output is correct
14 Correct 118 ms 3504 KB Output is correct
15 Correct 116 ms 3504 KB Output is correct
16 Correct 158 ms 3892 KB Output is correct
17 Correct 140 ms 3892 KB Output is correct
18 Correct 134 ms 3892 KB Output is correct
19 Correct 151 ms 3892 KB Output is correct
20 Correct 120 ms 3892 KB Output is correct

Subtask #4
0 / 62.0

# Verdict Execution time Memory Grader output
1 Runtime error 15 ms 1488 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -