oj.uz

Submission #276552

# Submission time Handle Problem Language Result Execution time Memory
276552 2020-08-20T13:44:26 Z sjimed Circus (Balkan15_CIRCUS) C++14
49 / 100
 4000 ms 9832 KB 
#include "circus.h"
#include<bits/stdc++.h>
using namespace std;

#define fast ios::sync_with_stdio(false); cin.tie(0);
#define fi first
#define se second
#define em emplace
#define eb emplace_back
#define all(v) (v).begin(), (v).end()
#define mp make_pair

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<int,pii> piii;
const int inf = 1e9;
const ll INF = 1e18;

int n, m;
int dp[100010];
bool chk[100010];
set<int> s;
vector<int> p, v1, v2;
priority_queue<piii, vector<piii>, greater<piii>> pQ;
vector<int> ans;

void init(int N, int M, int P[]){
    n = N;
    m = M;

    for(int i=0; i<n; i++) p.eb(P[i]);

    p.eb(m);
    s.insert(m);
    
    sort(all(p));
    p.erase(unique(all(p)), p.end());

    for(int i=0; i<p.size(); i++) s.insert(i);

    pQ.em(0, mp(p.size()-1, p.size()-1));

    while(pQ.size()) {
        int cost = pQ.top().fi;
        int x = pQ.top().se.fi;
        int par = pQ.top().se.se;
        pQ.pop();

        if(x > par) {
            //auto it = s.upper_bound(x);
            //if(it != s.end()) pQ.em(p[*it] - p[par], mp(*it, par));
            if(x+1 < p.size()) pQ.em(p[x+1] - p[par], mp(x+1, par));
        } 
        else {
            //auto it = s.lower_bound(x);
            //if(it != s.begin()) pQ.em(p[par] - p[*prev(it)], mp(*prev(it) , par));
            if(x-1 >= 0) pQ.em(p[par] - p[x-1], mp(x-1, par));
        }

        if(chk[x]) continue;
        chk[x] = true;
        dp[x] = cost;
        //s.erase(x);

        int k = lower_bound(all(p), p[x] + cost) - p.begin();
        if(k < p.size()) pQ.em(p[k] - p[x], mp(k, x));

        k = upper_bound(all(p), p[x] - cost) - p.begin() - 1;
        if(k >= 0) pQ.em(p[x] - p[k], mp(k, x));
    }

    for(int i=0; i<p.size(); i++) {
        if(v1.empty() || v1.back() < p[i] - dp[i]) v1.eb(p[i] - dp[i]);
        else v1.eb(v1.back());
    }

    for(int i=p.size()-1; i>=0; i--) {
        if(v2.empty() || v2.back() > p[i] + dp[i]) v2.eb(p[i] + dp[i]);
        else v2.eb(v2.back());
    }

    reverse(all(v2));
}

int minLength(int D) {
    int ret = m - D;

    int k = lower_bound(all(v1), D) - v1.begin();
    ret = min(ret, p[k] - D);

    k = upper_bound(all(v2), D) - v2.begin() - 1;
    if(k >= 0) ret = min(ret, D - p[k]);

    return ret;
}

Compilation message

circus.cpp: In function 'void init(int, int, int*)':
circus.cpp:40:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |     for(int i=0; i<p.size(); i++) s.insert(i);
      |                  ~^~~~~~~~~
circus.cpp:53:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |             if(x+1 < p.size()) pQ.em(p[x+1] - p[par], mp(x+1, par));
      |                ~~~~^~~~~~~~~~
circus.cpp:67:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |         if(k < p.size()) pQ.em(p[k] - p[x], mp(k, x));
      |            ~~^~~~~~~~~~
circus.cpp:73:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(int i=0; i<p.size(); i++) {
      |                  ~^~~~~~~~~
grader.cpp: In function 'int main()':
grader.cpp:14:12: warning: unused variable 'max_code' [-Wunused-variable]
   14 |  long long max_code;
      |            ^~~~~~~~
grader.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 |  scanf("%d%d", &N, &M);
      |  ~~~~~^~~~~~~~~~~~~~~~
grader.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 |   scanf("%d", &P[i]);
      |   ~~~~~^~~~~~~~~~~~~
grader.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   21 |  scanf("%d", &Q);
      |  ~~~~~^~~~~~~~~~
grader.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |   scanf("%d", &d);
      |   ~~~~~^~~~~~~~~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4078 ms 9832 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 542 ms 512 KB Output is correct
6 Correct 530 ms 632 KB Output is correct
7 Correct 515 ms 632 KB Output is correct
8 Correct 523 ms 632 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 542 ms 512 KB Output is correct
6 Correct 530 ms 632 KB Output is correct
7 Correct 515 ms 632 KB Output is correct
8 Correct 523 ms 632 KB Output is correct
9 Correct 971 ms 9720 KB Output is correct
10 Correct 996 ms 5624 KB Output is correct
11 Correct 974 ms 5240 KB Output is correct
12 Correct 991 ms 9676 KB Output is correct

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4078 ms 9832 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4078 ms 9832 KB Time limit exceeded
2 Halted 0 ms 0 KB -