Submission #868172

#	Time	Username	Problem	Language	Result	Execution time	Memory
868172		nnhzzz	Soccer (JOI17_soccer)	C++14	100 / 100	409 ms	35396 KiB

soccer

// cre: Nguyen Ngoc Hung - Train VOI 2024 :>

#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <unordered_set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <cstring>
#include <unordered_map>
#include <cmath>
#include <array>
#include <cassert>
#include <random>

using namespace std;

#define        __nnhzzz__  signed main()
#define          BIT(i,j)  ((i>>j)&1LL)
#define           MASK(i)  (1LL<<i)
#define            ALL(x)  (x).begin(),(x).end()
#define             SZ(x)  (int)(x).size()
#define                fi  first
#define                se  second
#define                ll  long long
#define                vi  vector<int>
#define               vvi  vector<vi>
#define              vvvi  vector<vvi>
#define               pii  pair<int,int>
#define              vpii  vector<pii>
#define REPDIS(i,be,en,j)  for(int i = (be); i<=(en); i+=j)
#define     REPD(i,be,en)  for(int i = (be); i>=(en); i--)
#define      REP(i,be,en)  for(int i = (be); i<=(en); i++)
#define               int  ll
#define                MP  make_pair

//------------------------------------------------------------------------------------------------//
int readInt(){
    char c;
    do{ c = getchar(); }while(c!='-' && !isdigit(c));
    bool neg = (c=='-');
    int res = neg?0:c-'0';
    while(isdigit(c=getchar())) res = (res<<3)+(res<<1)+(c-'0');
    return neg?-res:res;
}
//------------------------------------------------------------------------------------------------//
const int inf = 1e18,LOG = 20,MAXN = 5e2+7,N = 1e5+3;
const int MOD = 1e9+7,MOD1 = 1e9+207,MOD2 = 1e9+407,MOD3 = 998244353;
const int dx[] = {0,0,-1,1},dy[] = {-1,1,0,0};
//------------------------------------------------------------------------------------------------//
template<typename T1, typename T2> bool mini(T1 &a, T2 b){if(a>b){a=b;return true;}return false;}
template<typename T1, typename T2> bool maxi(T1 &a, T2 b){if(a<b){a=b;return true;}return false;}
template<typename T> T gcd(T a, T b) { while(b) { a %= b; swap(a,b); } return a; }
template<typename T> T lcm(T a, T b) { return a/gcd(a,b)*b; }
//------------------------------------------------------------------------------------------------//

/*
----------------------------------------------------------------
    END OF TEMPLATE
----------------------------------------------------------------
    Nguyen Ngoc Hung - nnhzzz
    Training for VOI24 gold medal
----------------------------------------------------------------
*/

struct Node{
    int w,x,y,t;
    Node(int _w, int _x, int _y, int _t):w(_w),x(_x),y(_y),t(_t){}
    bool operator < (const Node &other) const {
        return w>other.w;
    }
};

// int dis[MAXN][MAXN],dp[MAXN][MAXN][6];
pii st,en;
int n,m,A,B,C;

bool ok(int x, int y){
    return (x>=0 && y>=0 && x<=n && y<=m);
}

void solve(){
    n = readInt(); m = readInt();
    A = readInt(); B = readInt(); C = readInt();
    int tmp = readInt();
    // memset(dis,0x3f,sizeof dis); memset(dp,0x3f,sizeof dp);
    vvvi dp(n+3,vvi(m+3,vi(6,inf))); vvi dis(n+3,vi(m+3,inf));
    priority_queue<Node> heap; queue<pii> q;
    REP(i,1,tmp){
        int x = readInt(),y = readInt();
        dis[x][y] = 0; q.emplace(x,y);
        if(i==1) st = MP(x,y);
        if(i==tmp) en = MP(x,y);
    }
    while(SZ(q)!=0){
        auto [x,y] = q.front(); q.pop();
        REP(i,0,3){
            int nx = x+dx[i],ny = y+dy[i];
            if(ok(nx,ny)==false) continue;
            if(mini(dis[nx][ny],dis[x][y]+1)){
                q.emplace(nx,ny);
            }
        }
    }
    heap.push(Node(0,st.fi,st.se,4));
    dp[st.fi][st.se][4] = 0; // i,j,4 - den o i,j dang du bong
    while(SZ(heap)!=0){
        Node node = heap.top(); heap.pop();
        int w1 = node.w,x = node.x,y = node.y,t = node.t;
        if(dp[x][y][t]!=w1) continue;
        if(t==4){
            REP(i,0,3){
                int nx = x+dx[i],ny = y+dy[i];
                if(ok(nx,ny)==true && mini(dp[nx][ny][4],dp[x][y][4]+C)) heap.push(Node(dp[nx][ny][4],nx,ny,4));
                if(mini(dp[x][y][i],dp[x][y][4]+B)) heap.push(Node(dp[x][y][i],x,y,i));
            }
        }else{
            int nx = x+dx[t],ny = y+dy[t];
            if(ok(nx,ny)==true && mini(dp[nx][ny][t],dp[x][y][t]+A)) heap.push(Node(dp[nx][ny][t],nx,ny,t));
            if(mini(dp[x][y][4],dp[x][y][t]+dis[x][y]*C)) heap.push(Node(dp[x][y][4],x,y,4));
        }
    }
    cout << dp[en.fi][en.se][4];
}

__nnhzzz__{
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    #define name "test"
    if(fopen(name".inp","r")){
        freopen(name".inp","r",stdin);
        freopen(name".out","w",stdout);
    }
    #define name1 "nnhzzz"
    if(fopen(name1".inp","r")){
        freopen(name1".inp","r",stdin);
        freopen(name1".out","w",stdout);
    }

    int test = 1;

    while(test--){
      solve();
    }
    cerr << "\nTime elapsed: " << 1000*clock()/CLOCKS_PER_SEC << "ms\n";
    return 0;
}

Compilation message (stderr)

soccer.cpp: In function 'void solve()':
soccer.cpp:123:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  123 |         auto [x,y] = q.front(); q.pop();
      |              ^
soccer.cpp: In function 'int main()':
soccer.cpp:158:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  158 |         freopen(name".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
soccer.cpp:159:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  159 |         freopen(name".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
soccer.cpp:163:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  163 |         freopen(name1".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
soccer.cpp:164:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  164 |         freopen(name1".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 30 / 30
• Subtask 3: 65 / 65