oj.uz

Submission #127420

# Submission time Handle Problem Language Result Execution time Memory
127420 2019-07-09T11:05:14 Z choikiwon Sushi (JOI16_sushi) C++17
5 / 100
 283 ms 1920 KB 
#include<bits/stdc++.h>
using namespace std;

const int MN = 100010;
const int SQ = 500;
const int BS = (MN + SQ - 1) / SQ;

int N, Q;
int A[MN];
priority_queue<int> V[BS], X[BS];

void prop(int bid) {
    int l = bid * SQ;
    int r = min(N - 1, l + SQ - 1);

    for(int i = l; i <= r; i++) {
        if(V[bid].empty() || -V[bid].top() >= A[i]) continue;
        V[bid].push(-A[i]);
        A[i] = -V[bid].top(); V[bid].pop();
    }

    while(!V[bid].empty()) V[bid].pop();
    while(!X[bid].empty()) X[bid].pop();
}

int go1(int s, int e, int p) {
    int bid = s / SQ;
    int l = bid * SQ;
    int r = min(N - 1, l + SQ - 1);
    prop(bid);

    for(int i = s; i <= e; i++) if(A[i] > p) swap(A[i], p);
    for(int i = l; i <= r; i++) X[bid].push(A[i]);
    return p;
}
int go2(int bid, int p) {
    V[bid].push(-p);
    X[bid].push(p);
    int mx = X[bid].top(); X[bid].pop();
    return mx;
}

int solve(int s, int e, int p) {
    if(s / SQ == e / SQ) {
        return go1(s, e, p);
    }
    else {
        p = go1(s, (s / SQ + 1) * SQ - 1, p);
        for(int i = s / SQ + 1; i < e / SQ; i++) p = go2(i, p);
        p = go1(e / SQ * SQ, e, p);
        return p;
    }
}

int main() {
    scanf("%d %d", &N, &Q);

    for(int i = 0; i < N; i++) {
        scanf("%d", &A[i]);
    }

    for(int i = 0; i < N; i++) {
        X[i / SQ].push(A[i]);
    }
    for(int i = 0; i < Q; i++) {
        int s, e, p; scanf("%d %d %d", &s, &e, &p);
        s--; e--;

        if(s <= e) {
            printf("%d\n", solve(s, e, p));
        }
        else {
            p = solve(s, N - 1, p);
            printf("%d\n", solve(0, e, p));
        }
    }
}

Compilation message

sushi.cpp: In function 'int main()':
sushi.cpp:56:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &N, &Q);
     ~~~~~^~~~~~~~~~~~~~~~~
sushi.cpp:59:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &A[i]);
         ~~~~~^~~~~~~~~~~~~
sushi.cpp:66:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int s, e, p; scanf("%d %d %d", &s, &e, &p);
                      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 204 ms 712 KB Output is correct
2 Correct 204 ms 504 KB Output is correct
3 Correct 200 ms 512 KB Output is correct
4 Correct 201 ms 376 KB Output is correct
5 Correct 202 ms 504 KB Output is correct
6 Correct 206 ms 376 KB Output is correct
7 Correct 83 ms 432 KB Output is correct
8 Correct 84 ms 376 KB Output is correct
9 Correct 207 ms 604 KB Output is correct
10 Correct 201 ms 480 KB Output is correct
11 Correct 208 ms 376 KB Output is correct
12 Correct 209 ms 748 KB Output is correct
13 Correct 218 ms 376 KB Output is correct
14 Correct 283 ms 376 KB Output is correct
15 Correct 279 ms 504 KB Output is correct
16 Correct 85 ms 504 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 22 ms 1920 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 204 ms 712 KB Output is correct
2 Correct 204 ms 504 KB Output is correct
3 Correct 200 ms 512 KB Output is correct
4 Correct 201 ms 376 KB Output is correct
5 Correct 202 ms 504 KB Output is correct
6 Correct 206 ms 376 KB Output is correct
7 Correct 83 ms 432 KB Output is correct
8 Correct 84 ms 376 KB Output is correct
9 Correct 207 ms 604 KB Output is correct
10 Correct 201 ms 480 KB Output is correct
11 Correct 208 ms 376 KB Output is correct
12 Correct 209 ms 748 KB Output is correct
13 Correct 218 ms 376 KB Output is correct
14 Correct 283 ms 376 KB Output is correct
15 Correct 279 ms 504 KB Output is correct
16 Correct 85 ms 504 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Execution timed out 22 ms 1920 KB Time limit exceeded (wall clock)
24 Halted 0 ms 0 KB -