oj.uz

Submission #938670

# Submission time Handle Problem Language Result Execution time Memory
938670 2024-03-05T12:08:56 Z Zero_OP Crocodile's Underground City (IOI11_crocodile) C++14
100 / 100
 357 ms 49176 KB 
#include<bits/stdc++.h>

using namespace std;
using int64 = int64_t;

#define     REP(i, n) for(int i = 0, _n = n; i < _n; ++i)
#define    REPD(i, n) for(int i = n - 1; i >= 0; --i)
#define  FOR(i, l, r) for(int i = l, _r = r; i <= _r; ++i)
#define FORD(i, r, l) for(int i = r, _l = l; i >= _l; --i)
#define          left __left
#define         right __right
#define          prev __prev
#define          next __next
#define           div __div
#define            pb push_back
#define            pf push_front
#define         sz(v) (int)v.size()
#define      range(v) begin(v), end(v)
#define    compact(v) v.erase(unique(range(v)), end(v))
#define      debug(v) "[" #v " = " << (v) << "]"

template<typename T>
    bool minimize(T& a, const T& b){
        if(a > b){
            a = b;
            return true;
        }
        return false;
    }

template<typename T>
    bool maximize(T& a, const T& b){
        if(a < b){
            a = b;
            return true;
        }
        return false;
    }

template<int dimension, class T>
struct vec : public vector<vec<dimension - 1, T>> {
    static_assert(dimension > 0, "Dimension must be positive !\n");
    template<typename... Args>
    vec(int n = 0, Args... args) : vector<vec<dimension - 1, T>>(n, vec<dimension - 1, T>(args...)) {}
};

template<class T>
struct vec<1, T> : public vector<T> {
    vec(int n = 0, T val = T()) : vector<T>(n, val) {}
};

int travel_plan(int n, int m, int R[][2], int L[], int k, int P[]){
    vector<vector<pair<int, int>>> adj(n);
    REP(i, m){
        int u = R[i][0], v = R[i][1], w = L[i];
        adj[u].pb(make_pair(v, w));
        adj[v].pb(make_pair(u, w));
    }

    priority_queue<pair<int64, int>, vector<pair<int64, int>>, greater<pair<int64, int>>> pq;
    vector<int64> best(n, LLONG_MAX), second_best(n, LLONG_MAX);

    REP(i, k){
        best[P[i]] = 0;
        second_best[P[i]] = 0;
        pq.push({0, P[i]});
    }

    vector<bool> mark(n);
    while(!pq.empty()){
        int64 cost;
        int u;
        tie(cost, u) = pq.top(); pq.pop();

        if(mark[u]) continue;
        mark[u] = true;

        for(auto [v, w] : adj[u]){
            if(second_best[u] + w < second_best[v]){
                second_best[v] = second_best[u] + w;
                if(best[v] > second_best[v]) swap(best[v], second_best[v]);
                if(second_best[v] != LLONG_MAX) pq.push(make_pair(second_best[v], v));
            }
        }
    }

    return (int)second_best[0];
}

//#define Zero_OP //turn off when submitting
#ifdef Zero_OP

void init(void);
void process(void);

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

    #define task "antuvu"
    if(fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }

    int T = 1; //cin >> T;
    while(T--) {
        init();
        process();
    }

    return 0;
}

void init(){

}

void process(){
    int R[4][2]; R[0][0] = 0; R[0][1] = 1; R[1][0] = 0; R[1][1] = 2; R[2][0] = 3; R[2][1] = 2; R[3][0] = 2; R[3][1] = 4;
    int L[4]; L[0] = 2; L[1] = 3; L[2] = 1; L[3] = 4;
    int P[3]; P[0] = 1; P[1] = 3; P[2] = 4;
    cout << travel_plan(5, 4, R, L, 3, P);
}

#endif

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:78:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   78 |         for(auto [v, w] : adj[u]){
      |                  ^

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4696 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 3 ms 4700 KB Output is correct
13 Correct 3 ms 4700 KB Output is correct
14 Correct 1 ms 4548 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 2 ms 4696 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 3 ms 4700 KB Output is correct
13 Correct 3 ms 4700 KB Output is correct
14 Correct 1 ms 4548 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 279 ms 41768 KB Output is correct
17 Correct 55 ms 13136 KB Output is correct
18 Correct 67 ms 14376 KB Output is correct
19 Correct 357 ms 49176 KB Output is correct
20 Correct 192 ms 34992 KB Output is correct
21 Correct 25 ms 8024 KB Output is correct
22 Correct 216 ms 32252 KB Output is correct