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답안 #225475

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
225475 2020-04-20T15:35:47 Z Ruxandra985 Soccer (JOI17_soccer) C++14
100 / 100
 377 ms 26728 KB 
#include <bits/stdc++.h>
#define INF 2000000000000000000
using namespace std;
long long di[] = {0 , 0 , 0 , 1 , -1};
long long dj[] = {0 , 1 , -1 , 0 , 0};
priority_queue <pair <pair <long long,long long> , pair <long long,long long> > > h;
pair <long long,long long> v[100010];
deque <pair <long long,long long> > dq;
long long f[510][510];
long long dp[510][510][6];
int main()
{
    FILE *fin = stdin;
    FILE *fout = stdout;
    long long n , m , a , b , c , k , ic , jc , iv , jv , dirc , dirv , i , j , val , d;
    fscanf (fin,"%lld%lld%lld%lld%lld%lld",&n,&m,&a,&b,&c,&k);
    n++;
    m++;
    for (i = 1 ; i <= k ; i++){
        fscanf (fin,"%lld%lld",&v[i].first,&v[i].second);
        v[i].first++;
        v[i].second++;
        if (i != k){ /// modifica aici daca vrei sa se plimbe si k
            dq.push_back(v[i]);
            f[v[i].first][v[i].second] = 1;
        }
    }

    while (!dq.empty()){

        ic = dq.front().first;
        jc = dq.front().second;
        dq.pop_front();

        for (d = 1 ; d <= 4 ; d++){
            iv = ic + di[d];
            jv = jc + dj[d];

            if (iv > 0 && jv > 0 && iv <= n && jv <= m && !f[iv][jv]){
                f[iv][jv] = 1 + f[ic][jc];
                dq.push_back(make_pair(iv , jv));
            }

        }

    }

    /// f[i][j] - 1 = distanta minima de la orice jucator (in afr de k) la i j

    /// dp[i][j][dir] = cost minim sa ajungi in i j si directia sa fie dir
    /// dir = 0 => apartine unui jucator

    for (i = 1 ; i <= n ; i++){
        for (j = 1 ; j <= m ; j++){
            for (d = 0 ; d < 5 ; d++)
                dp[i][j][d] = INF;
        }
    }


    dp[v[1].first][v[1].second][0] = 0; /// stare initiala
    h.push(make_pair( make_pair(0 , 0) , v[1] ) );

    while (!h.empty()){

        val = -h.top().first.first;
        dirc = h.top().first.second;
        ic = h.top().second.first;
        jc = h.top().second.second;
        h.pop();

        //if (ic == 2 && jc == 5 && dirc == 1)
          //  printf ("a");

        if (dp[ic][jc][dirc] != val)
            continue;

        //printf ("%lld %lld %lld\n" , ic , jc , dirc);

        if (ic == v[k].first && jc == v[k].second){

            fprintf (fout,"%lld",val);
            return 0;

        }

        if (dirc != 0){ /// nu apartine niciunui jucator si e intr un sut

            /// cazul 1 : un jucator o sa vina sa o ia aici

            dirv = 0;
            iv = ic;
            jv = jc;
            if (dp[iv][jv][dirv] > dp[ic][jc][dirc] + c * ( f[iv][jv] - 1 ) ){
                dp[iv][jv][dirv] = dp[ic][jc][dirc] + c * ( f[iv][jv] - 1 );
                h.push(make_pair( make_pair(-dp[iv][jv][dirv] , dirv) , make_pair(iv , jv) ) );
            }

            /// cazul 2 : continua pe directia aia

            dirv = dirc;
            iv = ic + di[dirc];
            jv = jc + dj[dirc];
            if (iv > 0 && jv > 0 && iv <= n && jv <= m && dp[iv][jv][dirv] > dp[ic][jc][dirc] + a ){
                dp[iv][jv][dirv] = dp[ic][jc][dirc] + a;
                h.push(make_pair( make_pair(-dp[iv][jv][dirv] , dirv) , make_pair(iv , jv) ) );
            }


        }
        else {

            /// acum apartine unui jucator
            /// cazul 1 : jucatorul asta face un pas cu ea

            dirv = 0;

            for (d = 1 ; d < 5 ; d++){
                iv = ic + di[d];
                jv = jc + dj[d];

                if (iv > 0 && jv > 0 && iv <= n && jv <= m && dp[iv][jv][dirv] > dp[ic][jc][dirc] + c ){
                    dp[iv][jv][dirv] = dp[ic][jc][dirc] + c;
                    h.push(make_pair( make_pair(-dp[iv][jv][dirv] , dirv) , make_pair(iv , jv) ) );
                }

            }

            /// cazul 2 : jucatorul care o are acum ii da un sut intr o directie

            for (d = 1 ; d < 5 ; d++){
                iv = ic + di[d];
                jv = jc + dj[d];
                dirv = d;

                if (iv > 0 && jv > 0 && iv <= n && jv <= m && dp[iv][jv][dirv] > dp[ic][jc][dirc] + a + b ){
                    dp[iv][jv][dirv] = dp[ic][jc][dirc] + a + b;
                    h.push(make_pair( make_pair(-dp[iv][jv][dirv] , dirv) , make_pair(iv , jv) ) );
                }

            }


        }

    }


    return 0;
}

Compilation message

soccer.cpp: In function 'int main()':
soccer.cpp:16:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     fscanf (fin,"%lld%lld%lld%lld%lld%lld",&n,&m,&a,&b,&c,&k);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
soccer.cpp:20:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         fscanf (fin,"%lld%lld",&v[i].first,&v[i].second);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 7796 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 83 ms 22772 KB Output is correct
4 Correct 40 ms 18668 KB Output is correct
5 Correct 63 ms 7680 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 18664 KB Output is correct
2 Correct 28 ms 16500 KB Output is correct
3 Correct 112 ms 19932 KB Output is correct
4 Correct 271 ms 22732 KB Output is correct
5 Correct 149 ms 22112 KB Output is correct
6 Correct 173 ms 22748 KB Output is correct
7 Correct 107 ms 22876 KB Output is correct
8 Correct 97 ms 22752 KB Output is correct
9 Correct 26 ms 16740 KB Output is correct
10 Correct 23 ms 8564 KB Output is correct
11 Correct 182 ms 22884 KB Output is correct
12 Correct 194 ms 22752 KB Output is correct
13 Correct 119 ms 19936 KB Output is correct
14 Correct 79 ms 22884 KB Output is correct
15 Correct 20 ms 15228 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 7796 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 83 ms 22772 KB Output is correct
4 Correct 40 ms 18668 KB Output is correct
5 Correct 63 ms 7680 KB Output is correct
6 Correct 40 ms 18664 KB Output is correct
7 Correct 28 ms 16500 KB Output is correct
8 Correct 112 ms 19932 KB Output is correct
9 Correct 271 ms 22732 KB Output is correct
10 Correct 149 ms 22112 KB Output is correct
11 Correct 173 ms 22748 KB Output is correct
12 Correct 107 ms 22876 KB Output is correct
13 Correct 97 ms 22752 KB Output is correct
14 Correct 26 ms 16740 KB Output is correct
15 Correct 23 ms 8564 KB Output is correct
16 Correct 182 ms 22884 KB Output is correct
17 Correct 194 ms 22752 KB Output is correct
18 Correct 119 ms 19936 KB Output is correct
19 Correct 79 ms 22884 KB Output is correct
20 Correct 20 ms 15228 KB Output is correct
21 Correct 35 ms 8184 KB Output is correct
22 Correct 265 ms 22752 KB Output is correct
23 Correct 377 ms 17280 KB Output is correct
24 Correct 260 ms 18920 KB Output is correct
25 Correct 215 ms 22748 KB Output is correct
26 Correct 285 ms 23264 KB Output is correct
27 Correct 157 ms 17680 KB Output is correct
28 Correct 281 ms 18748 KB Output is correct
29 Correct 337 ms 22516 KB Output is correct
30 Correct 165 ms 18424 KB Output is correct
31 Correct 83 ms 18796 KB Output is correct
32 Correct 168 ms 26728 KB Output is correct
33 Correct 194 ms 22748 KB Output is correct
34 Correct 45 ms 16740 KB Output is correct
35 Correct 233 ms 17192 KB Output is correct