oj.uz

Submission #62771

# Submission time Handle Problem Language Result Execution time Memory
62771 2018-07-30T03:17:57 Z jjwdi0 None (KOI18_matrix) C++11
29 / 100
 206 ms 54420 KB 
#include <bits/stdc++.h>
#define ROOT 450
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(N / 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[i/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[i/ROOT].begin(), comp2[i/ROOT].end(), B[i].second.second) - comp2[i/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 632 KB Output is correct
2 Correct 8 ms 936 KB Output is correct
3 Correct 9 ms 1208 KB Output is correct
4 Correct 11 ms 1344 KB Output is correct
5 Correct 8 ms 1556 KB Output is correct
6 Correct 8 ms 1880 KB Output is correct
7 Correct 8 ms 1948 KB Output is correct

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 2656 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 632 KB Output is correct
2 Correct 8 ms 936 KB Output is correct
3 Correct 9 ms 1208 KB Output is correct
4 Correct 11 ms 1344 KB Output is correct
5 Correct 8 ms 1556 KB Output is correct
6 Correct 8 ms 1880 KB Output is correct
7 Correct 8 ms 1948 KB Output is correct
8 Correct 116 ms 7744 KB Output is correct
9 Correct 173 ms 11632 KB Output is correct
10 Correct 176 ms 15916 KB Output is correct
11 Correct 153 ms 19356 KB Output is correct
12 Correct 121 ms 23392 KB Output is correct
13 Correct 206 ms 27816 KB Output is correct
14 Correct 119 ms 31184 KB Output is correct
15 Correct 109 ms 35100 KB Output is correct
16 Correct 117 ms 39984 KB Output is correct
17 Correct 131 ms 43464 KB Output is correct
18 Correct 119 ms 47184 KB Output is correct
19 Correct 117 ms 50684 KB Output is correct
20 Correct 134 ms 54420 KB Output is correct

Subtask #4
0 / 62.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 2656 KB Output isn't correct
2 Halted 0 ms 0 KB -