Submission #1292955

#	Time	Username	Problem	Language	Result	Execution time	Memory
1292955		binminh01	Watermelon (INOI20_watermelon)	C++20	0 / 100	2093 ms	1608 KiB

Main

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int mn = 1e5 + 5;
ll n, a[mn], k, b[mn], s[mn];


void solve(){
    cin >> n >> k;
    for(int i = 1; i <= n; ++i) a[i] = i, cin >> s[i];
    do {
        for(int i = n; i >= 1; --i){
            b[i] = -1;
            ll pot = 1;
            for(int j = i + 1; j <= n; ++j){
                if(a[j] > a[i] && (b[j] == -1 || pot <= b[j])){
                    b[i] = pot;
                    break;
                }
                if(b[j] == -1) break;
                pot = max(pot, b[j] + 1);
            }
        }
        ll c = 1;
        for(int i = 1; i <= n; ++i){
            c &= (b[i] == s[i]);
        }
        k -= c;
//        for(int i = 1)
        if(k == 0){
            for(int i = 1; i <= n; ++i) cout << a[i] << " ";
            return; 
        }
    } while (next_permutation(a + 1, a + n + 1));
    cout << -1;
    return;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    if(fopen(".INP", "r")) {
        freopen(".INP", "r", stdin);
        freopen(".OUT", "w", stdout);
    }
    int testCase = 1;
    //cin >> testCase;
    while(testCase--) solve();
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:43:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |         freopen(".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~
Main.cpp:44:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |         freopen(".OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 25
• Subtask 3: 0 / 31
• Subtask 4: 0 / 18
• Subtask 5: 0 / 19