Kindergarten

input/code.cpp: In function 'void solve()':
input/code.cpp:38:42: warning: iteration 16 invokes undefined behavior [-Waggressive-loop-optimizations]
   38 |   for (int i = 1; i <= 17; i++) check[i] = 0;
      |                                 ~~~~~~~~~^~~
input/code.cpp:38:21: note: within this loop
   38 |   for (int i = 1; i <= 17; i++) check[i] = 0;
      |                   ~~^~~~~
input/code.cpp:38:42: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset [136, 143] is out of the bounds [0, 136] of object 'check' with type 'long long int [17]' [-Warray-bounds]
   38 |   for (int i = 1; i <= 17; i++) check[i] = 0;
      |                                 ~~~~~~~~~^~~
input/code.cpp:8:11: note: 'check' declared here
    8 | long long check[MAXN];
      |           ^~~~~
input/code.cpp:38:42: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset [136, 143] is out of the bounds [0, 136] of object 'check' with type 'long long int [17]'...

#include <bits/stdc++.h>
using namespace std;

const int MAXN = 1e1 + 7;
long long result = 1e18;
long long n;
long long a[MAXN][MAXN];
long long check[MAXN];

void backtracking (long long a[MAXN][MAXN], long long check[MAXN], long long i, long long depth, long long ans, long long n) {
    if (depth == n) {
        //cout << ans << endl;
        if (ans < result) result = ans;
        return;
    } 
    
    for (int j = 1; j <= n; j++) {
        if(!check[j]) {
            //cout << i << ' ' << j << endl;
            check[j] = 1;
            backtracking(a, check, j, depth + 1, ans + a[i][j], n);
            check[j] = 0;
        }
    }
    
    // return (backtracking(ans + a[i], a, i + 1, n),
    // backtracking(ans - a[i], a, i + 1, n));

}

void solve() {
  cin >> n;
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= n; j++) {
        cin >> a[i][j];
    }
  }
  for (int i = 1; i <= 17; i++) check[i] = 0; 
  
  for(int i = 1; i <= n; i++) {
    check[i] = 1;
    backtracking(a, check, i, 1, a[i][i], n);
    check[i] = 0;
  }
  
  cout << result;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    solve();

    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: ACCEPTED

Test 24

Verdict: ACCEPTED

Test 25

Verdict: ACCEPTED

Test 26

Verdict: ACCEPTED

Test 27

Verdict: ACCEPTED

Test 28

Verdict: ACCEPTED

Test 29

Verdict: ACCEPTED

Test 30

Verdict: ACCEPTED

Test 31

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Test 32

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Test 90

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