oj.uz

Submission #275875

# Submission time Handle Problem Language Result Execution time Memory
275875 2020-08-20T08:10:27 Z 임성재(#5103) Circus (Balkan15_CIRCUS) C++17
28 / 100
 332 ms 6532 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;
priority_queue<piii, vector<piii>, greater<piii>> pQ;

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(0);
    p.eb(m);
    sort(all(p));
    p.erase(unique(all(p)), p.end());

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

    pQ.em(0, mp(m, m));

    while(pQ.size()) {
        auto x = pQ.top();
        pQ.pop();

        x.se.fi = lower_bound(all(p), x.se.fi) - p.begin();
        x.se.se = lower_bound(all(p), x.se.se) - p.begin();

        if(chk[x.se.fi]) continue;
        chk[x.se.fi] = true;
        dp[x.se.fi] = x.fi;
        s.erase(p[x.se.fi]);

        int i = x.se.fi;
        int c1 = -1, c2 = -1;

        if(s.lower_bound(p[i] + dp[i]) != s.end()) c2 = *s.lower_bound(p[i] + dp[i]);
        if(s.upper_bound(p[i] - dp[i]) != s.begin()) c1 = *prev(s.upper_bound(p[i] - dp[i]));

        if(c1 != -1) pQ.em(p[i] - c1, mp(c1, p[i]));
        if(c2 != -1) pQ.em(c2 - p[i], mp(c2, p[i]));

        i = x.se.se;
        c1 = -1, c2 = -1;

        if(s.lower_bound(p[i] + dp[i]) != s.end()) c2 = *s.lower_bound(p[i] + dp[i]);
        if(s.upper_bound(p[i] - dp[i]) != s.begin()) c1 = *prev(s.upper_bound(p[i] - dp[i]));

        if(c1 != -1) pQ.em(p[i] - c1, mp(c1, p[i]));
        if(c2 != -1) pQ.em(c2 - p[i], mp(c2, p[i]));
    }
}

int minLength(int D) {
    int ret = m - D;
    for(int i=0; i<p.size(); i++) {
        if(abs(p[i] - D) < dp[i]) continue;
        ret = min(ret, abs(p[i] - D));
    }

    return ret;
}

Compilation message

circus.cpp: In function 'void init(int, int, int*)':
circus.cpp:38:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |     for(int i=0; i<p.size(); i++) s.insert(p[i]);
      |                  ~^~~~~~~~~
circus.cpp: In function 'int minLength(int)':
circus.cpp:76:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |     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
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 314 ms 6532 KB Output is correct
2 Correct 320 ms 6256 KB Output is correct
3 Correct 310 ms 6256 KB Output is correct
4 Correct 332 ms 6256 KB Output is correct

Subtask #2
17.0 / 17.0

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

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Incorrect 7 ms 512 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Incorrect 7 ms 512 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #5
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 314 ms 6532 KB Output is correct
2 Correct 320 ms 6256 KB Output is correct
3 Correct 310 ms 6256 KB Output is correct
4 Correct 332 ms 6256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Incorrect 7 ms 512 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 314 ms 6532 KB Output is correct
2 Correct 320 ms 6256 KB Output is correct
3 Correct 310 ms 6256 KB Output is correct
4 Correct 332 ms 6256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Incorrect 7 ms 512 KB Output isn't correct
10 Halted 0 ms 0 KB -