Submission #1100804

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1100804	2024-10-14 18:30:43	Kirill22	DEL13 (info1cup18_del13)	C++17	0 / 100	8 ms	2436 KiB

del13

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#include "bits/stdc++.h"
using namespace std;
//#include "debug.h"
void solve() {
    int n, m;
    cin >> n >> m;
    if (!m || (n - m) % 2) {
        cout << -1 << '\n';
        return;
    }
    vector<int> a(n), ord;
    for (int i = 0; i < m; i++) {
        int x;
        cin >> x;
        x--;
        ord.push_back(x);
        a[x] = 1;
    }
    std::sort(ord.begin(), ord.end());
    ord.push_back(n);
    vector<map<int, int>> dp(m + 1);
    if (ord[0] % 2 == 1) {
        dp[0][1] = -1;
    } else if (!ord[0]) {
        dp[0][0] = -1;
    } else {
        dp[0][2] = -1;
 
 
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