제출 #54803

#제출 시각아이디문제언어결과실행 시간메모리
54803top34051무지개나라 (APIO17_rainbow)C++17
0 / 100
3 ms668 KiB
//Subtask 2 #include "rainbow.h" #include<bits/stdc++.h> using namespace std; #define pii pair<int,int> #define X first #define Y second const int maxn = 2e5 + 5; int n,m,k; int a[3][maxn]; map<int,pii> itv[5]; void init(int R, int C, int sr, int sc, int M, char *S) { n = R; m = C; k = M; int x = sr, y = sc; a[x][y] = 1; for(int i=0;i<k;i++) { if(S[i]=='N') x--; if(S[i]=='E') y++; if(S[i]=='W') y--; if(S[i]=='S') x++; a[x][y] = 1; } int sz; sz = 0; for(int y=1;y<=m;y++) { if(!a[1][y]) continue; int pos = y; while(y+1<=m && a[1][y+1]) y++; // printf("1 [%d, %d]\n",pos,y); itv[1][y] = {pos,++sz}; } itv[1][m+1] = {m+1, ++sz}; sz = 0; for(int y=1;y<=m;y++) { if(!a[2][y]) continue; int pos = y; while(y+1<=m && a[2][y+1]) y++; // printf("2 [%d, %d]\n",pos,y); itv[2][y] = {pos,++sz}; } itv[2][m+1] = {m+1,++sz}; sz = 0; for(int y=1;y<=m;y++) { if(!a[1][y] && !a[2][y]) continue; int pos = y; while(y+1<=m && ((a[1][y]&&a[1][y+1]) || (a[2][y]&&a[2][y+1]))) y++; // printf("3 [%d, %d]\n",pos,y); itv[3][y] = {pos,++sz}; } itv[3][m+1] = {m+1,++sz}; } int colour(int ar, int ac, int br, int bc) { int t; if(ar==1 && br==1) t = 1; else if(ar==2 && br==2) t = 2; else t = 3; auto it1 = itv[t].lower_bound(ac); auto it2 = itv[t].lower_bound(bc); if(it2->Y.X > bc) it2--; return it2->Y.Y - it1->Y.Y + 1; }
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