Submission #7268331


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#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef pair<ll,ll> P;
 
long long int INF = 3e18;
double Pi = 3.1415926535897932384626;
 
//vector<ll> G[550010];
//vector<P> tree[500010];
priority_queue <ll> pql;
priority_queue <P> pqp;
//big priority queue
priority_queue <ll,vector<ll>,greater<ll> > pqls;
priority_queue <P,vector<P>,greater<P> > pqps;
//small priority queue
//top pop
 
int dx[8]={1,0,-1,0,1,1,-1,-1};
int dy[8]={0,1,0,-1,1,-1,-1,1};
char dir[] = "DRUL";
//ll bit[500005];
//↓,→,↑,←
 
 
#define p(x) cout<<x<<"\n";
#define el cout<<endl;
#define pe(x) cout<<(x)<<" ";
#define ps(x) cout<<fixed<<setprecision(25)<<x<<endl;
#define pu(x) cout<<(x);
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define CLEAR(a) a = decltype(a)(); 
 
 
ll mod = 1000000007;
/*
2000000011 is prime
2000000033 is prime
*/

ll rui(ll number1,ll number2){
 
    if(number2 == 0){
        return 1;
    }else{
        ll number3 = rui(number1,number2 / 2);
        number3 *= number3;
        number3 %= mod;
        if(number2%2==1){
            number3 *= number1;
            number3 %= mod;
        }
        return number3;
    }
}
ll gcd(ll number1,ll number2){
 
    if(number1 > number2){
        swap(number1,number2);
    }
    if(number1 == 0 || number1 == number2){
        return number2;
    }else{
        return gcd(number2 % number1,number1);
    }
}
void YES(bool condition){
 
    if(condition){
        p("YES");
    }else{
        p("NO");
    }
    return;
}
void Yes(bool condition){
 
    if(condition){
        p("Yes");
    }else{
        p("No");
    }
    return;
}

/*
ll fact[800005],rfact[800005];

void c3_init(){
    fact[0] = rfact[0] = 1;
    for(ll i=1; i<=800000; i++){
        fact[i] = (fact[i-1]*i) % mod;
    }
    rfact[800000] = rui(fact[800000],mod - 2);
    for(ll i=800000; i>=1; i--){
       rfact[i-1] = rfact[i] * i;
       rfact[i-1] %= mod;
    }
    return;}
ll c3(ll n,ll r){
    return (((fact[n] * rfact[r]) % mod) * rfact[n-r]) % mod;}
*/
 
ll n,m,num,sum,a,b,c,d,e,g,h,w,i,j,q,r,l;
ll k,ans;
ll x[500005],y[500005],z[500005];
char s[50],t[50];
ll table[5000][5000];
ll played[1005];
bool today[1005];

int main(){
    cin >> n;
    for(i=0;i<n;i++){
        for(j=0;j<n-1;j++){
            cin >> table[i][j];
        }
    }
    for(int day=0;day<=n*n;day++){
        for(i=0;i<n;i++){
            today[i] = false;
        }
        int endcount = 0;
        bool update = false;
        for(i=0;i<n;i++){
            if(today[i])continue;
            if(played[i] == n - 1)continue;
            ll op = table[i][played[i]] - 1;
            if(table[op][played[op]] == i+1 && !today[op]){
                //pe(i);p(op);
                played[i]++;
                played[op]++;
                update = true;
                today[i] = true;
                today[op] = true;
            }
        }
        for(i=0;i<n;i++){
            if(played[i] == n - 1){
                endcount++;
            }
        }
        if(endcount == n){
            p(day + 1);
            return 0;
        }
        if(!update){
            p(-1);
            return 0;
        }

    }
    return 0;
}




Submission Info

Submission Time
Task E - League
User enjapma
Language C++14 (GCC 5.4.1)
Score 500
Code Size 3368 Byte
Status AC
Exec Time 1797 ms
Memory 39808 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 3
AC × 23
Set Name Test Cases
Sample a01, a02, a03
All a01, a02, a03, b04, b05, b06, b07, b08, b09, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20, b21, b22, b23
Case Name Status Exec Time Memory
a01 AC 1 ms 256 KB
a02 AC 1 ms 256 KB
a03 AC 1 ms 256 KB
b04 AC 1 ms 256 KB
b05 AC 1 ms 256 KB
b06 AC 1 ms 256 KB
b07 AC 1 ms 256 KB
b08 AC 1797 ms 39808 KB
b09 AC 212 ms 39808 KB
b10 AC 220 ms 39808 KB
b11 AC 220 ms 39808 KB
b12 AC 66 ms 21120 KB
b13 AC 57 ms 19072 KB
b14 AC 28 ms 12928 KB
b15 AC 22 ms 10880 KB
b16 AC 14 ms 8704 KB
b17 AC 10 ms 6656 KB
b18 AC 48 ms 17024 KB
b19 AC 39 ms 14976 KB
b20 AC 14 ms 8704 KB
b21 AC 11 ms 6656 KB
b22 AC 5 ms 4608 KB
b23 AC 3 ms 2560 KB