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Submission #288760

# Submission time Handle Problem Language Result Execution time Memory
288760 2020-09-01T21:08:21 Z peti1234 Ancient Books (IOI17_books) C++17
0 / 100
 1 ms 384 KB 
#include <bits/stdc++.h>

using namespace std;
const int c=100002;
bool v[c];
long long sum;
vector<pair<int, int> > sz;
int n, t[c], mini, maxi;
void dfs(int a) {
    v[a]=true;
    mini=min(mini, a), maxi=max(maxi, a);
    if (!v[t[a]]) dfs(t[a]);
}
long long minimum_walk(vector<int> p, int s) {
    n=p.size();
    for (int i=0; i<n; i++) t[i]=p[i], sum+=(abs(p[i]-i));
    for (int i=0; i<n; i++) if (!v[i] && t[i]!=i) mini=n, maxi=0, dfs(i), sz.push_back({mini, maxi});
    maxi=0;
    for (int i=1; i<sz.size(); i++) {
        maxi=max(maxi, sz[i-1].second);
        sum+=2*max(0, sz[i].first-maxi);
    }
    return sum;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:19:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     for (int i=1; i<sz.size(); i++) {
      |                   ~^~~~~~~~~~

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB 3rd lines differ - on the 1st token, expected: '6', found: '4'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB 3rd lines differ - on the 1st token, expected: '6', found: '4'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB 3rd lines differ - on the 1st token, expected: '6', found: '4'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB 3rd lines differ - on the 1st token, expected: '6', found: '4'
2 Halted 0 ms 0 KB -