oj.uz

Submission #200203

# Submission time Handle Problem Language Result Execution time Memory
200203 2020-02-05T16:51:24 Z wilwxk Safety (NOI18_safety) C++14
5 / 100
 63 ms 6008 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int MAXN = 2e5+5;
int v[MAXN];
ll pre[MAXN], pos[MAXN];
int n, x;

int main() {
	scanf("%d %d", &n, &x);
	for(int i = 1; i <= n; i++) scanf("%d", &v[i]);
	sort(v+1, v+1+n);

	for(int i = 1; i <= n; i++) pre[i] = pre[i-1]+v[i];
	for(int i = n; i >= 1; i--) pos[i] = pos[i+1]+v[i];

	ll ans = 1e18;
	for(int i = 1; i <= n; i++) {
		ll val = v[i]*ll(i-1);
		val -= pre[i-1];
		val += pos[i+1];
		val -= v[i]*ll(n-i);
		ans = min(ans, val);
	}

	printf("%lld\n", ans);
}

Compilation message

safety.cpp: In function 'int main()':
safety.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &x);
  ~~~~~^~~~~~~~~~~~~~~~~
safety.cpp:12:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 1; i <= n; i++) scanf("%d", &v[i]);
                              ~~~~~^~~~~~~~~~~~~

Subtask #1
0 / 3.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Incorrect 5 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 3960 KB Output is correct
2 Correct 60 ms 5752 KB Output is correct
3 Correct 63 ms 6008 KB Output is correct

Subtask #5
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -