oj.uz

답안 #282038

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
282038 2020-08-23T20:46:49 Z mat_v 악어의 지하 도시 (IOI11_crocodile) C++14
89 / 100
 632 ms 105832 KB 
#include "crocodile.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>

#define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
#define fb(i,a,b) for(int (i) = (a); (i) >= (b); --(i))
#define mod 998244353
#define xx first
#define yy second
#define all(a) (a).begin(), (a).end()
#define pb push_back
#define ll long long
#define pii pair<int,ll>


using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>,rb_tree_tag, tree_order_statistics_node_update> ordered_set;/// find_by_order(x)(x+1th) , order_of_key() (strictly less)
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());









int n,m;

vector<pii> graf[1000005];
pii dist[1000005];

priority_queue<pii> pq;

void djikstra(){
    while(!pq.empty()){
        pii sta = pq.top();
        ll duz = -sta.xx;
        int koji = sta.yy;
        if(duz != dist[koji].yy){
            pq.pop();
            continue;
        }
        //cout << koji << " " << duz << "\n";
        //cout << dist[koji].xx << " " << dist[koji].yy << "\n";
        pq.pop();
        for(auto c:graf[koji]){
            ll tmpduz = duz + c.yy;
            pii tr = dist[c.xx];
            pii novi = tr;
            if(tmpduz < novi.xx)novi = {tmpduz, novi.xx};
            else if(tmpduz < novi.yy)novi = {novi.xx, tmpduz};
            if(novi.yy < tr.yy){
                dist[c.xx] = novi;
                pq.push({-novi.yy, c.xx});
            }
            dist[c.xx] = novi;
        }
    }
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
    n = N; m = M;
    ff(j,0,m - 1){
        int a = R[j][0];
        int b = R[j][1];
        a++; b++;
        ll c = L[j];
        graf[a].pb({b,c});
        graf[b].pb({a,c});
    }
    ll maks = 1e7;
    maks *= maks;
    ff(i,1,n)dist[i] = {maks, maks};
    ff(i,0,K - 1){
        int x = P[i];
        x++;
        pq.push({0,x});
        dist[x] = {0,0};
    }

    djikstra();

    return dist[1].yy;
}

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:7:27: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
    7 | #define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
      |                           ^
crocodile.cpp:68:5: note: in expansion of macro 'ff'
   68 |     ff(j,0,m - 1){
      |     ^~
crocodile.cpp:7:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    7 | #define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
      |                           ^
crocodile.cpp:78:5: note: in expansion of macro 'ff'
   78 |     ff(i,1,n)dist[i] = {maks, maks};
      |     ^~
crocodile.cpp:7:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    7 | #define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
      |                           ^
crocodile.cpp:79:5: note: in expansion of macro 'ff'
   79 |     ff(i,0,K - 1){
      |     ^~

Subtask #1
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23808 KB Output is correct
2 Correct 15 ms 23840 KB Output is correct
3 Correct 15 ms 23808 KB Output is correct
4 Correct 16 ms 23936 KB Output is correct
5 Correct 16 ms 23936 KB Output is correct
6 Correct 15 ms 23936 KB Output is correct
7 Correct 17 ms 23968 KB Output is correct
8 Correct 16 ms 23936 KB Output is correct

Subtask #2
43.0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23808 KB Output is correct
2 Correct 15 ms 23840 KB Output is correct
3 Correct 15 ms 23808 KB Output is correct
4 Correct 16 ms 23936 KB Output is correct
5 Correct 16 ms 23936 KB Output is correct
6 Correct 15 ms 23936 KB Output is correct
7 Correct 17 ms 23968 KB Output is correct
8 Correct 16 ms 23936 KB Output is correct
9 Correct 17 ms 24192 KB Output is correct
10 Correct 16 ms 23808 KB Output is correct
11 Correct 16 ms 24064 KB Output is correct
12 Correct 19 ms 24576 KB Output is correct
13 Correct 18 ms 24576 KB Output is correct
14 Correct 15 ms 23936 KB Output is correct
15 Correct 16 ms 24064 KB Output is correct

Subtask #3
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23808 KB Output is correct
2 Correct 15 ms 23840 KB Output is correct
3 Correct 15 ms 23808 KB Output is correct
4 Correct 16 ms 23936 KB Output is correct
5 Correct 16 ms 23936 KB Output is correct
6 Correct 15 ms 23936 KB Output is correct
7 Correct 17 ms 23968 KB Output is correct
8 Correct 16 ms 23936 KB Output is correct
9 Correct 17 ms 24192 KB Output is correct
10 Correct 16 ms 23808 KB Output is correct
11 Correct 16 ms 24064 KB Output is correct
12 Correct 19 ms 24576 KB Output is correct
13 Correct 18 ms 24576 KB Output is correct
14 Correct 15 ms 23936 KB Output is correct
15 Correct 16 ms 24064 KB Output is correct
16 Correct 632 ms 105832 KB Output is correct
17 Incorrect 131 ms 41068 KB Output isn't correct
18 Halted 0 ms 0 KB -