Submission #533509

#	Time	Username	Problem	Language	Result	Execution time	Memory
533509		Slavita	Autobus (COCI22_autobus)	C++14	70 / 70	175 ms	13992 KiB

Main

#include <bits/stdc++.h>
#pragma optimize("O3")
#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define ve vector<int>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define pi pair<int,int>
#define all(v) v.begin(),v.end()
#define si(v) (int)v.size()
#define en '\n'
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define ordered_muiltiset tree<int, null_type,less_equal<>, rb_tree_tag,tree_order_statistics_node_update>
//#define int long long
using namespace std;
//using namespace __gnu_pbds;
typedef long long ll;
typedef unsigned long long ull;

const int N = 1e2 + 228;
const int big = 1e9 + 228;
const ll llbig = 1e18 + 228;
//ordered_set os; // os.order_of_key(4), (*os.find_by_order(5))
ll n, m, ans, k, q, dp[N][N][N], mem[N][N];

void upd(ll &a, ll b){
    if (b < a) a = b;
}

//#undef int
int main(){
    //#define int long long
    iostream::sync_with_stdio(false); cin.tie(0); ios_base::sync_with_stdio(false); cout.tie(0);
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    cin >> n >> m;
    for (int i = 1; i <= m; i++){
        ll a, b, t;
        cin >> a >> b >> t;
        if (mem[a][b] == 0) mem[a][b] = t;
        else mem[a][b] = min(mem[a][b], t);
    }
    cin >> k >> q;
    k = min(k, n);

    for (int start = 1; start <= n; start++){
        for (int i = 1; i <= n; i++)
            for (int j = 0; j <= n; j++) dp[start][i][j] = llbig;
        dp[start][start][0] = 0;

        for (int kol = 0; kol < k; kol++){
            for (int v = 1; v <= n; v++){
                if (dp[start][v][kol] == llbig) continue;
                for (int u = 1; u <= n; u++){
                    ll c = mem[v][u];
                    if (u == v) continue;
                    if (!c) continue;
                    upd(dp[start][u][kol + 1], dp[start][v][kol] + c);
                }
            }
        }
    }


    while(q--){
        ll start, finish;
        cin >> start >> finish;

        ll mn = llbig;
        for (int kol = 0; kol <= k; kol++){
            mn = min(mn, dp[start][finish][kol]);
        }

        if (mn == llbig) cout << -1 << en;
        else cout << mn << en;
    }
    return 0;
}

Compilation message (stderr)

Main.cpp:2: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    2 | #pragma optimize("O3")
      |

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 25 / 25
• Subtask 4: 15 / 15