Submission #86660

#	Time	Username	Problem	Language	Result	Execution time	Memory
86660		Azamat_Murat	Calvinball championship (CEOI15_teams)	C++14	10 / 100	4 ms	716 KiB

teams

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define all(x) x.begin(), x.end()
#define ll long long
//#define int long long
using namespace std;
void boost()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
}
void free()
{
	freopen("A.in", "r", stdin);
	freopen("A.out", "w", stdout);
}
int a[10001];
main()
{
	//free();
	boost();
	int n;
	cin >> n;
	ll sum = 0, cnt = 0;
	for(int i = 1; i <= n; i++)
		cnt += (i);
	for(int i = n; i >= 1; i--) cin >> a[i], sum += (i * a[i]);
	//cout << sum << " " << cnt, exit(0);
	cout << sum - cnt + 1, exit(0);
}

Compilation message (stderr)

teams.cpp:21:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
teams.cpp: In function 'void free()':
teams.cpp:17:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("A.in", "r", stdin);
  ~~~~~~~^~~~~~~~~~~~~~~~~~~~
teams.cpp:18:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  freopen("A.out", "w", stdout);
  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10