Submission #1248615


Source Code Expand

#define MYDEBUG
#include <iostream>
#include <vector>
#include <chrono>
#include <random>
#include <algorithm>
#include <queue>
#include <set>
#include <cstdio>
#include <unordered_map>

#ifdef MYDEBUG
#define debug(x) cout<<#x<<": "<<x<<endl
#else
#define debug(x)
#endif
#define ll long long
#define ull unsigned long long
#define eps 1e-14
#define all(x) x.begin(), x.end()
using namespace std;

template<typename T>
ostream& operator<<(ostream& out, const vector<T>& v) {
	out << "[";
	size_t last = v.size() - 1;
	for (size_t i = 0; i < v.size(); ++i) {
		out << v[i];
		if (i != last)
			out << ",";
	}
	out << "]";
	return out;
}

const int maxn = 100 + 1;
int a[maxn];
int l[maxn];
int r[maxn];
void solve() {
	int N;
	cin >> N;
	a[0] = l[0] = 0;
	for (int i = 1; i <= N; ++i) {
		cin >> a[i];
		l[i] = l[i - 1] + a[i];
	}
	if (l[N] % N != 0) {
		cout << -1 << endl;
		return;
	}
	int opt = l[N] / N;
	if (opt == 0) {
		cout << 0 << endl;
		return;
	}
	int cnt = 0;
	for (int i = 1; i < N; ++i) {
		int left = l[i];
		int right = l[N] - l[i];
		int lop = opt * i;
		int rop = l[N] - lop;
		if (!(left == lop && right == rop))
			cnt++;
	}
	cout << cnt << endl;
}

int main() {
	solve();
	return 0;
}

Submission Info

Submission Time
Task B - 島と橋
User LitMc
Language C++14 (GCC 5.4.1)
Score 100
Code Size 1280 Byte
Status AC
Exec Time 1 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 100 / 100
Status
AC × 4
AC × 38
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt
All sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_20.txt, subtask1_21.txt, subtask1_22.txt, subtask1_23.txt, subtask1_24.txt, subtask1_25.txt, subtask1_26.txt, subtask1_27.txt, subtask1_28.txt, subtask1_29.txt, subtask1_30.txt, subtask1_31.txt, subtask1_32.txt, subtask1_33.txt, subtask1_34.txt
Case Name Status Exec Time Memory
sample_01.txt AC 1 ms 256 KB
sample_02.txt AC 1 ms 256 KB
sample_03.txt AC 1 ms 256 KB
sample_04.txt AC 1 ms 256 KB
subtask1_01.txt AC 1 ms 256 KB
subtask1_02.txt AC 1 ms 256 KB
subtask1_03.txt AC 1 ms 256 KB
subtask1_04.txt AC 1 ms 256 KB
subtask1_05.txt AC 1 ms 256 KB
subtask1_06.txt AC 1 ms 256 KB
subtask1_07.txt AC 1 ms 256 KB
subtask1_08.txt AC 1 ms 256 KB
subtask1_09.txt AC 1 ms 256 KB
subtask1_10.txt AC 1 ms 256 KB
subtask1_11.txt AC 1 ms 256 KB
subtask1_12.txt AC 1 ms 256 KB
subtask1_13.txt AC 1 ms 256 KB
subtask1_14.txt AC 1 ms 256 KB
subtask1_15.txt AC 1 ms 256 KB
subtask1_16.txt AC 1 ms 256 KB
subtask1_17.txt AC 1 ms 256 KB
subtask1_18.txt AC 1 ms 256 KB
subtask1_19.txt AC 1 ms 256 KB
subtask1_20.txt AC 1 ms 256 KB
subtask1_21.txt AC 1 ms 256 KB
subtask1_22.txt AC 1 ms 256 KB
subtask1_23.txt AC 1 ms 256 KB
subtask1_24.txt AC 1 ms 256 KB
subtask1_25.txt AC 1 ms 256 KB
subtask1_26.txt AC 1 ms 256 KB
subtask1_27.txt AC 1 ms 256 KB
subtask1_28.txt AC 1 ms 256 KB
subtask1_29.txt AC 1 ms 256 KB
subtask1_30.txt AC 1 ms 256 KB
subtask1_31.txt AC 1 ms 256 KB
subtask1_32.txt AC 1 ms 256 KB
subtask1_33.txt AC 1 ms 256 KB
subtask1_34.txt AC 1 ms 256 KB