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Submission #162548

# Submission time Handle Problem Language Result Execution time Memory
162548 2019-11-08T18:39:44 Z MohamedAhmed04 Shortcut (IOI16_shortcut) C++14
0 / 100
 2 ms 376 KB 
#include <bits/stdc++.h>
#include "shortcut.h"
//#include "grader.cpp"

using namespace std ;

long long find_shortcut(int n, vector<int> dist, std::vector<int>s, int c)
{
	long long pref[n+1] , suff[n+1] , distance[n+1] , Max[n+1] , farp[n+1] , fars[n+1] ;
	pref[1] = s[0] * 1ll;
	farp[1] = s[0] * 1ll ;
	distance[1] = 0ll ;
	for(int i = 2 ; i <= n ; ++i)
	{
		farp[i] = pref[i-1] + dist[i-2]*1ll + s[i-1] ;
		pref[i] = max(pref[i-1]+dist[i-2]*1ll , s[i-1]*1ll) ;
		distance[i] = distance[i-1] + dist[i-2] * 1ll ; 
	}
	suff[n] = s[n-1] * 1ll;
	fars[n] = s[n-1] * 1ll ;
	for(int i = n-1 ; i >= 1 ; --i)
	{
		fars[i] = suff[i+1]+dist[i-1]*1ll+s[i-1]*1ll ;
		suff[i] = max(suff[i+1]+dist[i-1]*1ll , s[i-1]*1ll) ;
	}
	long long ans = 1e18 , now = 0 , val;
	for(int i = 1 ; i <= n ; ++i)
		now = max(now , max(farp[i] , fars[i])) ;
	ans = min(ans , now) ;
	for(int i = 1 ; i <= n ; ++i)
	{
		Max[i] = 0ll ;
		for(int j = i+1 ; j <= n ; ++j)
		{
			val = c * 1ll ;
			//if(distance[j]-distance[i] < val)
			//	continue ;
			now = max(pref[i] , s[i-1] * 1ll) + max(suff[j] , s[j-1] * 1ll) + val ;
			for(int k = 1 ; k <= i ; ++k)
				now = max(now , farp[k]) ;
			for(int k = j ; k <= n ; ++k)
				now = max(now , fars[k]) ;
			for(int k = i+1 ; k < j ; ++k)
			{
				now = max(now , min(farp[k] , pref[i] + val + dist[j] - dist[k] + s[k-1] * 1ll)) ;
				//now = max(now , min(farp[k] , s[k-1] + distance[j] - distance[k] + val + max(pref[i] , s[i-1] * 1ll))) ;
				now = max(now , min(fars[k] , suff[j] + val + distance[k] - distance[i] + s[k-1] * 1ll)) ;
				//now = max(now , min(fars[k] , s[k-1] + distance[k] - distance[i] + val + max(suff[i] , s[i-1] * 1ll))) ;
				for(int x = i+1 ; x < k ; ++x)
				{
					long long a = s[x-1] + distance[k] - distance[x] + s[k-1] ;
					long long b = s[x-1] + distance[x] - distance[i] + val + distance[j] - distance[k] + s[k-1] ;
					now = max(now , max(a , b)) ;
				}
			}
			//if(j == i+1)
			//	Max[j] = s[j-1] ;
			//else
			//	Max[j] = max(Max[j-1] + dist[j-2] * 1ll , s[j-1] * 1ll) ;
			ans = min(ans , now) ;
		}
	}
    return ans ;
}

Compilation message

shortcut.cpp: In function 'long long int find_shortcut(int, std::vector<int>, std::vector<int>, int)':
shortcut.cpp:9:52: warning: variable 'Max' set but not used [-Wunused-but-set-variable]
  long long pref[n+1] , suff[n+1] , distance[n+1] , Max[n+1] , farp[n+1] , fars[n+1] ;
                                                    ^~~

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB n = 4, 80 is a correct answer
2 Correct 2 ms 256 KB n = 9, 110 is a correct answer
3 Correct 2 ms 376 KB n = 4, 21 is a correct answer
4 Correct 2 ms 256 KB n = 3, 4 is a correct answer
5 Correct 2 ms 376 KB n = 2, 62 is a correct answer
6 Correct 2 ms 376 KB n = 2, 3 is a correct answer
7 Correct 2 ms 256 KB n = 3, 29 is a correct answer
8 Correct 2 ms 376 KB n = 2, 3 is a correct answer
9 Correct 2 ms 376 KB n = 2, 3 is a correct answer
10 Correct 2 ms 256 KB n = 2, 2000000001 is a correct answer
11 Correct 2 ms 376 KB n = 2, 3000000000 is a correct answer
12 Correct 2 ms 376 KB n = 3, 3000000000 is a correct answer
13 Correct 2 ms 256 KB n = 3, 3000000000 is a correct answer
14 Correct 2 ms 256 KB n = 4, 3000000001 is a correct answer
15 Correct 2 ms 256 KB n = 4, 4000000000 is a correct answer
16 Incorrect 2 ms 376 KB n = 5, incorrect answer: jury 4000000000 vs contestant 4000000001
17 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB n = 4, 80 is a correct answer
2 Correct 2 ms 256 KB n = 9, 110 is a correct answer
3 Correct 2 ms 376 KB n = 4, 21 is a correct answer
4 Correct 2 ms 256 KB n = 3, 4 is a correct answer
5 Correct 2 ms 376 KB n = 2, 62 is a correct answer
6 Correct 2 ms 376 KB n = 2, 3 is a correct answer
7 Correct 2 ms 256 KB n = 3, 29 is a correct answer
8 Correct 2 ms 376 KB n = 2, 3 is a correct answer
9 Correct 2 ms 376 KB n = 2, 3 is a correct answer
10 Correct 2 ms 256 KB n = 2, 2000000001 is a correct answer
11 Correct 2 ms 376 KB n = 2, 3000000000 is a correct answer
12 Correct 2 ms 376 KB n = 3, 3000000000 is a correct answer
13 Correct 2 ms 256 KB n = 3, 3000000000 is a correct answer
14 Correct 2 ms 256 KB n = 4, 3000000001 is a correct answer
15 Correct 2 ms 256 KB n = 4, 4000000000 is a correct answer
16 Incorrect 2 ms 376 KB n = 5, incorrect answer: jury 4000000000 vs contestant 4000000001
17 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB n = 4, 80 is a correct answer
2 Correct 2 ms 256 KB n = 9, 110 is a correct answer
3 Correct 2 ms 376 KB n = 4, 21 is a correct answer
4 Correct 2 ms 256 KB n = 3, 4 is a correct answer
5 Correct 2 ms 376 KB n = 2, 62 is a correct answer
6 Correct 2 ms 376 KB n = 2, 3 is a correct answer
7 Correct 2 ms 256 KB n = 3, 29 is a correct answer
8 Correct 2 ms 376 KB n = 2, 3 is a correct answer
9 Correct 2 ms 376 KB n = 2, 3 is a correct answer
10 Correct 2 ms 256 KB n = 2, 2000000001 is a correct answer
11 Correct 2 ms 376 KB n = 2, 3000000000 is a correct answer
12 Correct 2 ms 376 KB n = 3, 3000000000 is a correct answer
13 Correct 2 ms 256 KB n = 3, 3000000000 is a correct answer
14 Correct 2 ms 256 KB n = 4, 3000000001 is a correct answer
15 Correct 2 ms 256 KB n = 4, 4000000000 is a correct answer
16 Incorrect 2 ms 376 KB n = 5, incorrect answer: jury 4000000000 vs contestant 4000000001
17 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB n = 4, 80 is a correct answer
2 Correct 2 ms 256 KB n = 9, 110 is a correct answer
3 Correct 2 ms 376 KB n = 4, 21 is a correct answer
4 Correct 2 ms 256 KB n = 3, 4 is a correct answer
5 Correct 2 ms 376 KB n = 2, 62 is a correct answer
6 Correct 2 ms 376 KB n = 2, 3 is a correct answer
7 Correct 2 ms 256 KB n = 3, 29 is a correct answer
8 Correct 2 ms 376 KB n = 2, 3 is a correct answer
9 Correct 2 ms 376 KB n = 2, 3 is a correct answer
10 Correct 2 ms 256 KB n = 2, 2000000001 is a correct answer
11 Correct 2 ms 376 KB n = 2, 3000000000 is a correct answer
12 Correct 2 ms 376 KB n = 3, 3000000000 is a correct answer
13 Correct 2 ms 256 KB n = 3, 3000000000 is a correct answer
14 Correct 2 ms 256 KB n = 4, 3000000001 is a correct answer
15 Correct 2 ms 256 KB n = 4, 4000000000 is a correct answer
16 Incorrect 2 ms 376 KB n = 5, incorrect answer: jury 4000000000 vs contestant 4000000001
17 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB n = 4, 80 is a correct answer
2 Correct 2 ms 256 KB n = 9, 110 is a correct answer
3 Correct 2 ms 376 KB n = 4, 21 is a correct answer
4 Correct 2 ms 256 KB n = 3, 4 is a correct answer
5 Correct 2 ms 376 KB n = 2, 62 is a correct answer
6 Correct 2 ms 376 KB n = 2, 3 is a correct answer
7 Correct 2 ms 256 KB n = 3, 29 is a correct answer
8 Correct 2 ms 376 KB n = 2, 3 is a correct answer
9 Correct 2 ms 376 KB n = 2, 3 is a correct answer
10 Correct 2 ms 256 KB n = 2, 2000000001 is a correct answer
11 Correct 2 ms 376 KB n = 2, 3000000000 is a correct answer
12 Correct 2 ms 376 KB n = 3, 3000000000 is a correct answer
13 Correct 2 ms 256 KB n = 3, 3000000000 is a correct answer
14 Correct 2 ms 256 KB n = 4, 3000000001 is a correct answer
15 Correct 2 ms 256 KB n = 4, 4000000000 is a correct answer
16 Incorrect 2 ms 376 KB n = 5, incorrect answer: jury 4000000000 vs contestant 4000000001
17 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB n = 4, 80 is a correct answer
2 Correct 2 ms 256 KB n = 9, 110 is a correct answer
3 Correct 2 ms 376 KB n = 4, 21 is a correct answer
4 Correct 2 ms 256 KB n = 3, 4 is a correct answer
5 Correct 2 ms 376 KB n = 2, 62 is a correct answer
6 Correct 2 ms 376 KB n = 2, 3 is a correct answer
7 Correct 2 ms 256 KB n = 3, 29 is a correct answer
8 Correct 2 ms 376 KB n = 2, 3 is a correct answer
9 Correct 2 ms 376 KB n = 2, 3 is a correct answer
10 Correct 2 ms 256 KB n = 2, 2000000001 is a correct answer
11 Correct 2 ms 376 KB n = 2, 3000000000 is a correct answer
12 Correct 2 ms 376 KB n = 3, 3000000000 is a correct answer
13 Correct 2 ms 256 KB n = 3, 3000000000 is a correct answer
14 Correct 2 ms 256 KB n = 4, 3000000001 is a correct answer
15 Correct 2 ms 256 KB n = 4, 4000000000 is a correct answer
16 Incorrect 2 ms 376 KB n = 5, incorrect answer: jury 4000000000 vs contestant 4000000001
17 Halted 0 ms 0 KB -

Subtask #7
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB n = 4, 80 is a correct answer
2 Correct 2 ms 256 KB n = 9, 110 is a correct answer
3 Correct 2 ms 376 KB n = 4, 21 is a correct answer
4 Correct 2 ms 256 KB n = 3, 4 is a correct answer
5 Correct 2 ms 376 KB n = 2, 62 is a correct answer
6 Correct 2 ms 376 KB n = 2, 3 is a correct answer
7 Correct 2 ms 256 KB n = 3, 29 is a correct answer
8 Correct 2 ms 376 KB n = 2, 3 is a correct answer
9 Correct 2 ms 376 KB n = 2, 3 is a correct answer
10 Correct 2 ms 256 KB n = 2, 2000000001 is a correct answer
11 Correct 2 ms 376 KB n = 2, 3000000000 is a correct answer
12 Correct 2 ms 376 KB n = 3, 3000000000 is a correct answer
13 Correct 2 ms 256 KB n = 3, 3000000000 is a correct answer
14 Correct 2 ms 256 KB n = 4, 3000000001 is a correct answer
15 Correct 2 ms 256 KB n = 4, 4000000000 is a correct answer
16 Incorrect 2 ms 376 KB n = 5, incorrect answer: jury 4000000000 vs contestant 4000000001
17 Halted 0 ms 0 KB -

Subtask #8
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB n = 4, 80 is a correct answer
2 Correct 2 ms 256 KB n = 9, 110 is a correct answer
3 Correct 2 ms 376 KB n = 4, 21 is a correct answer
4 Correct 2 ms 256 KB n = 3, 4 is a correct answer
5 Correct 2 ms 376 KB n = 2, 62 is a correct answer
6 Correct 2 ms 376 KB n = 2, 3 is a correct answer
7 Correct 2 ms 256 KB n = 3, 29 is a correct answer
8 Correct 2 ms 376 KB n = 2, 3 is a correct answer
9 Correct 2 ms 376 KB n = 2, 3 is a correct answer
10 Correct 2 ms 256 KB n = 2, 2000000001 is a correct answer
11 Correct 2 ms 376 KB n = 2, 3000000000 is a correct answer
12 Correct 2 ms 376 KB n = 3, 3000000000 is a correct answer
13 Correct 2 ms 256 KB n = 3, 3000000000 is a correct answer
14 Correct 2 ms 256 KB n = 4, 3000000001 is a correct answer
15 Correct 2 ms 256 KB n = 4, 4000000000 is a correct answer
16 Incorrect 2 ms 376 KB n = 5, incorrect answer: jury 4000000000 vs contestant 4000000001
17 Halted 0 ms 0 KB -