Submission #805326

#TimeUsernameProblemLanguageResultExecution timeMemory
805326AntekbWombats (IOI13_wombats)C++17
37 / 100
3568 ms16468 KiB
#include "wombats.h" #include<bits/stdc++.h> using namespace std; const int RMAX=5000, CMAX=200, BLOMAX=50; int H[RMAX][CMAX], V[RMAX][CMAX], R, C, K=100, blo; int dist[2*BLOMAX][CMAX][CMAX], pocz[BLOMAX], kon[BLOMAX], pos[BLOMAX*2]; int escape(int V1, int V2) { int ans=dist[1][V1][V2]; int sum=0; for(int i=V2+1; i<C; i++){ sum+=H[R-1][i-1]; ans=min(ans, dist[1][V1][i]+sum); } sum=0; for(int i=V2-1; i>=0; i--){ sum+=H[R-1][i]; ans=min(ans, dist[1][V1][i]+sum); } //cerr<<ans<<"\n"; return ans; } void update(int num){ int tab[C][C]; for(int i=0; i<C; i++){ for(int j=0; j<C; j++){ tab[i][j]=(1e9)*(i!=j); } } for(int r=pocz[num]; r<=kon[num]; r++){ for(int i=0; i<C; i++){ for(int j=1; j<C; j++){ tab[i][j]=min(tab[i][j], tab[i][j-1]+H[r][j-1]); } for(int j=C-2; j>=0; j--){ tab[i][j]=min(tab[i][j+1]+H[r][j], tab[i][j]); } for(int j=0; j<C; j++){ tab[i][j]+=V[r][j]; } } } //cerr<<"\n"; //cerr<<num<<"\n"; for(int i=0; i<C; i++){ for(int j=0; j<C; j++){ //cerr<<tab[i][j]<<" \n"[j==C-1]; dist[blo+num][i][j]=tab[i][j]; } } //cerr<<"\n"; } void lacz(int v){ int l=v+v, r=v+v+1; if(pos[l]>pos[r])swap(l, r); if(r>=blo*2){ assert(false); for(int i=0; i<C; i++){ for(int j=0; j<C; j++){ dist[v][i][j]=dist[l][i][j]; } } } else{ for(int i=0; i<C; i++){ for(int j=0; j<C; j++){ dist[v][i][j]=1e9; for(int k=0; k<C; k++){ dist[v][i][j]=min(dist[v][i][j], dist[l][i][k]+dist[r][k][j]); } } } } /*cerr<<"\n"; cerr<<v<<"a\n"; cerr<<l<<" "<<r<<"\n"; for(int i=0; i<C; i++){ for(int j=0; j<C; j++){ cerr<<dist[v][i][j]<<" \n"[j==C-1]; } } cerr<<"\n";*/ } void init(int _R, int _C, int _H[5000][200], int _V[5000][200]) { R=_R; C=_C; for(int i=0; i<R; i++){ for(int j=0; j<C; j++){ H[i][j]=_H[i][j]; V[i][j]=_V[i][j]; } } for(int i=0; i*K<R-1; i++){ blo++; } for(int i=0; i*K<R-1; i++){ pocz[i]=i*K; kon[i]=min((i+1)*K-1, R-2); update(i); pos[i+blo]=i; } for(int i=blo-1; i>0; i--){ pos[i]=min(pos[i+i], pos[i+i+1]); lacz(i); } /*for(int i=0; i<C; i++){ for(int j=0; j<C; j++){ cerr<<i<<" "<<j<<" "<<escape(i, j)<<"\n"; } }*/ } void changeH(int P, int Q, int W) { H[P][Q]=W; if(P!=R-1){ update(P/K); int v=P/K+blo; v/=2; while(v){ lacz(v); v/=2; } } /*for(int i=0; i<C; i++){ for(int j=0; j<C; j++){ cerr<<i<<" "<<j<<" "<<escape(i, j)<<"\n"; } }*/ } void changeV(int P, int Q, int W) { V[P][Q]=W; update(P/K); int v=P/K+blo; v/=2; while(v){ lacz(v); v/=2; } /*for(int i=0; i<C; i++){ for(int j=0; j<C; j++){ cerr<<i<<" "<<j<<" "<<escape(i, j)<<"\n"; } }*/ }

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~
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