제출 #354292

#제출 시각아이디문제언어결과실행 시간메모리
354292denkendoemeer로봇 (APIO13_robots)C++14
100 / 100
1012 ms156564 KiB
#include<bits/stdc++.h> using namespace std; int dx[]={-1,0,1,0},dy[]={0,1,0,-1},dp[50][505][505],cost[10][10],n,m; const int inf=1e9; vector<array<int,2>>b[2250005]; array<int,2>nex[505][505][5],cost2[50]; string s[505]; array<int,2>dfs(int x,int y,int dir) { if (nex[x][y][dir][0]==-1){ nex[x][y][dir][0]=-2; int auxi=dir; if (s[x][y]=='C') auxi=(dir+1)%4; if (s[x][y]=='A') auxi=(dir+3)%4; int x2,y2; x2=x+dx[auxi]; y2=y+dy[auxi]; if (x2<0 || x2>=n || y2<0 || y2>=m || s[x2][y2]=='x') nex[x][y][dir]=(array<int,2>){x,y}; else nex[x][y][dir]=dfs(x2,y2,auxi); } return nex[x][y][dir]; } void path(int aux[505][505],int x,int y,int dir) { if (dir<2250000 && aux[x][y]>dir){ aux[x][y]=dir; b[dir].push_back((array<int,2>){x,y}); } } void bfs(int aux[505][505]) { int i,dir; for(i=0;i<2250000;i++) for(auto it:b[i]){ for(dir=0;dir<4;dir++){ array<int,2>auxi=nex[it[0]][it[1]][dir]; path(aux,auxi[0],auxi[1],i+1); } b[i].clear(); } } int main() { //freopen(".in","r",stdin); //freopen(".out","w",stdout); int cnt,i,j,dir,k; scanf("%d%d%d\n",&cnt,&m,&n); for(i=0;i<n;i++) cin>>s[i]; memset(nex,-1,sizeof(nex)); for(i=0;i<n;i++) for(j=0;j<m;j++) for(dir=0;dir<4;dir++) dfs(i,j,dir); memset(dp,0x3f,sizeof(dp)); int ind=0,i2,j2; for(i=0;i<cnt;i++) for(j=i;j>=0;j--){ cost[j][i]=ind; cost2[ind]=(array<int,2>){j,i}; if (j<i){ for(i2=0;i2<n;i2++) for(j2=0;j2<m;j2++) for(k=j;k<i;k++) path(dp[ind],i2,j2,dp[cost[j][k]][i2][j2]+dp[cost[k+1][i]][i2][j2]); } else{ for(i2=0;i2<n;i2++) for(j2=0;j2<m;j2++) if (s[i2][j2]-48==j+1) path(dp[ind],i2,j2,0); } bfs(dp[ind]); ind++; } int ans=inf; for(i=0;i<n;i++) for(j=0;j<m;j++) ans=min(ans,dp[cost[0][cnt-1]][i][j]); if (ans==inf) printf("-1\n"); else printf("%d\n",ans); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

robots.cpp: In function 'int main()':
robots.cpp:51:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   51 |     scanf("%d%d%d\n",&cnt,&m,&n);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...