oj.uz

답안 #340937

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
340937 2020-12-28T14:21:10 Z couplefire Soccer (JOI17_soccer) C++17
100 / 100
 984 ms 187236 KB 
#include<bits/stdc++.h>
#define LL long long
using namespace std;
LL A,B,C;
int Head[8000005],Cnt,N,M,D[505][505],Mantot,Arrive[505][505];
struct Point{int Xh,Yh;}P[8000005];
struct Edge{int Next,To; LL W;}E[8000005];
void Add_Edge(int X1,int Y1,LL Z1){E[++Cnt].Next=Head[X1],E[Cnt].To=Y1,E[Cnt].W=Z1,Head[X1]=Cnt;}
int Change(int X0,int Y0,int K0){return K0*(N+1)*(M+1)+X0*(M+1)+Y0;}
const int Go[4][2]={{1,0},{-1,0},{0,1},{0,-1}};
void BFS(){
   queue<pair<int,int> >Que;
   memset(D,0x3f,sizeof(D));
   for(int I=1;I<=Mantot;I++) Que.push(make_pair(P[I].Xh,P[I].Yh)),D[P[I].Xh][P[I].Yh]=0;
   while(!Que.empty()){
   	pair<int,int> Par=Que.front(); Que.pop();
   	Arrive[Par.first][Par.second]=0;
   	for(int I=0;I<4;I++){
   		int Nx=Par.first+Go[I][0],Ny=Par.second+Go[I][1];
   		if(Nx>N||Nx<0||Ny>M||Ny<0) continue;
   		if(D[Nx][Ny]>D[Par.first][Par.second]+1){
   			D[Nx][Ny]=D[Par.first][Par.second]+1;
   			if(!Arrive[Nx][Ny]) Que.push(make_pair(Nx,Ny)),Arrive[Nx][Ny]=1;
   		}
   	}
   }
}
struct Node{
   int Id;
   LL Dis;
   bool operator < (const Node& B)const{
   	return Dis>B.Dis;
   }
};
int Vis[8000005];
LL Best[8000005];
void Dijkstra(){
   priority_queue<Node>Q;
   memset(Best,0x3f,sizeof(Best));
   memset(Vis,0,sizeof(Vis));
   Q.push((Node){Change(P[1].Xh,P[1].Yh,4),0}),Best[Change(P[1].Xh,P[1].Yh,4)]=0;
   while(!Q.empty()){
   	Node Tp=Q.top(); Q.pop();
   	if(Vis[Tp.Id]) continue;
   	Vis[Tp.Id]=1;
   	for(int I=Head[Tp.Id];I;I=E[I].Next){
   		int Y=E[I].To;
   		if(Best[Y]<=Best[Tp.Id]+E[I].W) continue;
   		Best[Y]=Best[Tp.Id]+E[I].W,Q.push((Node){Y,Best[Y]});
   	} 
   }
}
signed main(){
   scanf("%d%d%lld%lld%lld%d",&N,&M,&A,&B,&C,&Mantot);
   for(int I=1;I<=Mantot;I++) scanf("%d%d",&P[I].Xh,&P[I].Yh);
   BFS();
   for(int I=0;I<=N;I++)
   	for(int J=0;J<=M;J++)
   		for(int U=0;U<4;U++){
   			Add_Edge(Change(I,J,U),Change(I,J,4),0LL);
   			Add_Edge(Change(I,J,4),Change(I,J,5),1LL*C*D[I][J]);
   			Add_Edge(Change(I,J,5),Change(I,J,U),1LL*B);
   			int Nx=I+Go[U][0],Ny=J+Go[U][1];
   			if(Nx<0||Ny<0||Nx>N||Ny>M) continue;
   			Add_Edge(Change(I,J,U),Change(Nx,Ny,U),1LL*A);
   			Add_Edge(Change(I,J,5),Change(Nx,Ny,5),1LL*C);
   		}
   Dijkstra();
   LL Ans=0x3f3f3f3f3f3f3f3f;
   for(int I=0;I<6;I++) Ans=min(Ans,Best[Change(P[Mantot].Xh,P[Mantot].Yh,I)]);
   printf("%lld",Ans);
   return 0;
}

Compilation message

soccer.cpp: In function 'int main()':
soccer.cpp:54:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   54 |    scanf("%d%d%lld%lld%lld%d",&N,&M,&A,&B,&C,&Mantot);
      |    ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
soccer.cpp:55:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   55 |    for(int I=1;I<=Mantot;I++) scanf("%d%d",&P[I].Xh,&P[I].Yh);
      |                               ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 171 ms 117348 KB Output is correct
2 Correct 52 ms 95340 KB Output is correct
3 Correct 675 ms 184924 KB Output is correct
4 Correct 710 ms 184924 KB Output is correct
5 Correct 148 ms 126956 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 814 ms 185084 KB Output is correct
2 Correct 820 ms 184924 KB Output is correct
3 Correct 557 ms 167900 KB Output is correct
4 Correct 557 ms 185088 KB Output is correct
5 Correct 578 ms 168156 KB Output is correct
6 Correct 574 ms 185052 KB Output is correct
7 Correct 785 ms 185120 KB Output is correct
8 Correct 686 ms 185052 KB Output is correct
9 Correct 771 ms 185120 KB Output is correct
10 Correct 150 ms 111076 KB Output is correct
11 Correct 782 ms 185136 KB Output is correct
12 Correct 787 ms 185084 KB Output is correct
13 Correct 427 ms 168028 KB Output is correct
14 Correct 772 ms 185120 KB Output is correct
15 Correct 623 ms 168156 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 171 ms 117348 KB Output is correct
2 Correct 52 ms 95340 KB Output is correct
3 Correct 675 ms 184924 KB Output is correct
4 Correct 710 ms 184924 KB Output is correct
5 Correct 148 ms 126956 KB Output is correct
6 Correct 814 ms 185084 KB Output is correct
7 Correct 820 ms 184924 KB Output is correct
8 Correct 557 ms 167900 KB Output is correct
9 Correct 557 ms 185088 KB Output is correct
10 Correct 578 ms 168156 KB Output is correct
11 Correct 574 ms 185052 KB Output is correct
12 Correct 785 ms 185120 KB Output is correct
13 Correct 686 ms 185052 KB Output is correct
14 Correct 771 ms 185120 KB Output is correct
15 Correct 150 ms 111076 KB Output is correct
16 Correct 782 ms 185136 KB Output is correct
17 Correct 787 ms 185084 KB Output is correct
18 Correct 427 ms 168028 KB Output is correct
19 Correct 772 ms 185120 KB Output is correct
20 Correct 623 ms 168156 KB Output is correct
21 Correct 170 ms 126700 KB Output is correct
22 Correct 925 ms 184968 KB Output is correct
23 Correct 887 ms 174432 KB Output is correct
24 Correct 949 ms 183188 KB Output is correct
25 Correct 750 ms 184960 KB Output is correct
26 Correct 815 ms 185180 KB Output is correct
27 Correct 441 ms 182708 KB Output is correct
28 Correct 447 ms 183392 KB Output is correct
29 Correct 712 ms 184988 KB Output is correct
30 Correct 405 ms 182872 KB Output is correct
31 Correct 814 ms 185052 KB Output is correct
32 Correct 984 ms 187236 KB Output is correct
33 Correct 656 ms 185024 KB Output is correct
34 Correct 968 ms 185248 KB Output is correct
35 Correct 426 ms 183276 KB Output is correct