Submission #1066478

#TimeUsernameProblemLanguageResultExecution timeMemory
1066478aaaaaarrozSoccer Stadium (IOI23_soccer)C++17
0 / 100
4600 ms32692 KiB
#include <bits/stdc++.h> using namespace std; int biggest_stadium(int N, vector<vector<int>> F){ map<tuple<int,int,int>,bool>libre; for(int fila=0;fila<N;fila++){ for(int i=0;i<N;i++){ for(int j=i;j<N;j++){ if(i==j){ libre[{fila,i,j}]=!F[fila][j]; } else{ libre[{fila,i,j}]=(!F[fila][j])&&libre[{fila,i,j-1}]; } } } } int best=0; for(int fila=0;fila<N;fila++){ for(int columna=0;columna<N;columna++){ for(int i=0;i<=columna;i++){ for(int j=columna;j<N;j++){ if(libre[{fila,i,j}]){ vector<pair<int,int>>almacen; almacen.push_back({i,j}); int suma=0; int fil=fila-1; while(fil>=0&&F[fil][columna]!=1){ int l=columna,r=columna; while(l>=almacen.back().first&&r<=almacen.back().second){ if(libre[{fil,l-1,r}]&&(l-1)>=almacen.back().first){ l--; } else if(libre[{fil,l,r+1}]&&(r+1)<=almacen.back().second){ r++; } else{ break; } } almacen.push_back({l,r}); fil--; } almacen.push_back({i,j}); fil=fila+1; int fila_extra=1; int alm_ant=almacen.size(); while(fil<N&&F[fil][columna]!=1){ if(fila_extra<alm_ant){ int l1=columna,r1=columna; l1=almacen[alm_ant].first; r1=almacen[alm_ant].second; while(l1>=almacen.back().first&&r1<=almacen.back().second){ if(libre[{fil,l1-1,r1}]&&(l1-1)>=almacen.back().first){ l1--; } else if(libre[{fil,l1,r1+1}]&&(r1+1)<=almacen.back().second){ r1++; } else{ break; } } int l=columna,r=columna; while(l>=almacen[fila_extra].first&&r<=almacen[fila_extra].second){ if(libre[{fil,l-1,r}]&&(l-1)>=almacen[fila_extra].first){ l--; } else if(libre[{fil,l,r+1}]&&(r+1)<=almacen[fila_extra].second){ r++; } else{ break; } } if(libre[{fil,l1,r1}]&&l1>=almacen.back().first&&r1<=almacen.back().second){ almacen.push_back({l1,r1}); } else{ almacen.push_back({l,r}); } fil++; fila_extra++; } else{ int l=columna,r=columna; while(l>=almacen.back().first&&r<=almacen.back().second){ if(libre[{fil,l-1,r}]&&(l-1)>=almacen.back().first){ l--; } else if(libre[{fil,l,r+1}]&&(r+1)<=almacen.back().second){ r++; } else{ break; } } almacen.push_back({l,r}); fil++; } } for(auto[x,y]:almacen){ suma+=(y-x+1); } suma-=(j-i+1); best=max(suma,best); } else{ continue; } } } } } return best; }
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