oj.uz

Submission #289076

# Submission time Handle Problem Language Result Execution time Memory
289076 2020-09-02T10:25:36 Z JoMee Ancient Books (IOI17_books) C++17
0 / 100
 1 ms 360 KB 
#include "books.h"
#include <bits/stdc++.h>
using namespace std;

#define rep(i,a,n) for(int i = a; i<n; i++)
#define per(i,a,n) for(int i = n-1; i>=a; i--)

long long minimum_walk(vector<int> p, int s) {
	vector<long long> sm(p.size(),0);
	rep(i,0,p.size()){
		if(i < p[i])sm[i]++,sm[p[i]]--;
	}
	rep(i,1,sm.size())sm[i] += sm[i-1];

	int rm = -1;
	per(i,0,p.size()){
		if(sm[i] != 0){
			rm = i;
			break;
		}
	}
	int lm = -1;

	rep(i,0,p.size()){
		if(sm[i] != 0){
			lm = i;
			break;
		}
	}
	rm = max(rm,s);
	lm = min(s,lm);
	if(rm == -1)return 0;
	long long res = 0;
	rep(i,0,rm){
		if(sm[i] != 0)res+=2*(sm[i]-1);
	}
	res += 2*(rm-lm+1);
	return res;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:5:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(i,a,n) for(int i = a; i<n; i++)
......
   10 |  rep(i,0,p.size()){
      |      ~~~~~~~~~~~~                   
books.cpp:10:2: note: in expansion of macro 'rep'
   10 |  rep(i,0,p.size()){
      |  ^~~
books.cpp:5:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(i,a,n) for(int i = a; i<n; i++)
......
   13 |  rep(i,1,sm.size())sm[i] += sm[i-1];
      |      ~~~~~~~~~~~~~                  
books.cpp:13:2: note: in expansion of macro 'rep'
   13 |  rep(i,1,sm.size())sm[i] += sm[i-1];
      |  ^~~
books.cpp:5:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(i,a,n) for(int i = a; i<n; i++)
......
   24 |  rep(i,0,p.size()){
      |      ~~~~~~~~~~~~                   
books.cpp:24:2: note: in expansion of macro 'rep'
   24 |  rep(i,0,p.size()){
      |  ^~~

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 360 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Incorrect 1 ms 256 KB 3rd lines differ - on the 1st token, expected: '0', found: '4'
10 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 360 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Incorrect 1 ms 256 KB 3rd lines differ - on the 1st token, expected: '0', found: '4'
10 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 360 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Incorrect 1 ms 256 KB 3rd lines differ - on the 1st token, expected: '0', found: '4'
10 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 256 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 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 360 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 360 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Incorrect 1 ms 256 KB 3rd lines differ - on the 1st token, expected: '0', found: '4'
10 Halted 0 ms 0 KB -