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求大佬帮我看一下我的四叉线段树哪里写错了,样例都对,是WA#include <iostream> #include <cstdio> #include <cmath> #include <string> #include <cstring> #include <algorithm> #include <limits> #include <vector> #include <stack> #include <queue> #include <set> #include <map> #define lowbit(x) ( x&(-x) ) #define pi 3.141592653589793 #define e 2.718281828459045 using namespace std; typedef unsigned long long ull; typedef long long ll; const int maxN = 1024; int Mem, N, op; int tree[maxN*maxN<<2]; bool yezi[maxN*maxN<<2]; void buildTree(int rt, int xl, int yl, int xr, int yr) { if(xl == xr && yl == yr) { tree[rt] = Mem; return; } int mid_x = (xl + xr)>>1, mid_y = (yl + yr)>>1; buildTree((rt<<2)-2, xl, yl, mid_x, mid_y); if(yl != yr) buildTree((rt<<2)-1, xl, mid_y+1, mid_x, yr); else { tree[(rt<<2)-1]=0; yezi[(rt<<2)-1]=true; } if(xl != xr) buildTree((rt<<2), mid_x+1, yl, xr, mid_y); else { tree[(rt<<2)]=0; yezi[(rt<<2)]=true; } if(xl!=xr && yl!=yr) buildTree((rt<<2)+1, mid_x+1, mid_y+1, xr, yr); else { tree[(rt<<2)+1]=0; yezi[(rt<<2)+1]=true; } tree[rt] = tree[(rt<<2)-2] + tree[(rt<<2)-1] + tree[(rt<<2)] + tree[(rt<<2)+1]; } void update(int rt, int xl, int yl, int xr, int yr, int qx, int qy, int val) { if(yezi[rt]) return; if(xl == xr && yl == yr) { tree[rt]+=val; return; } int mid_x = (xl + xr)>>1, mid_y = (yl + yr)>>1; if(qx<=mid_x && qy<=mid_y) update((rt<<2)-2, xl, yl, mid_x, mid_y, qx, qy, val); else if(qx<=mid_x && qy>mid_y) update((rt<<2)-1, xl, mid_y+1, mid_x, yr, qx, qy, val); else if(qx>mid_x && qy<=mid_y) update((rt<<2), mid_x+1, yl, xr, mid_y, qx, qy, val); else if(qx>mid_x && qy>mid_y) update((rt<<2)+1, mid_x+1, mid_y+1, xr, yr, qx, qy, val); tree[rt] = tree[(rt<<2)-2] + tree[(rt<<2)-1] + tree[(rt<<2)] + tree[(rt<<2)+1]; } int query(int rt, int xl, int yl, int xr, int yr, int qlx, int qly, int qrx, int qry) { if(yezi[rt]) return 0; if(qlx<=xl && qly<=yl && qrx>=xr && qry>=yr) return tree[rt]; int mid_x = (xl + xr)>>1, mid_y = (yl + yr)>>1; int ans = 0; if(qlx<=mid_x && qly<=mid_y) ans+=query((rt<<2)-2, xl, yl, mid_x, mid_y, qlx, qly, qrx, qry); if(qlx<=mid_x && qry>mid_y) ans+=query((rt<<2)-1, xl, mid_y+1, mid_x, yr, qlx, qly, qrx, qry); if(qrx>mid_x && qly<=mid_y) ans+=query((rt<<2), mid_x+1, yl, xr, mid_y, qlx, qly, qrx, qry); if(qrx>mid_x && qly>mid_y) ans+=query((rt<<2)+1, mid_x+1, mid_y+1, xr, yr, qlx, qly, qrx, qry); return ans; } int main() { while(scanf("%d%d", &Mem, &N)!=EOF) { memset(yezi, false, sizeof(yezi)); buildTree(1, 0, 0, N-1, N-1); while(scanf("%d", &op) && op!=3) { if(op == 1) { int e1, e2, e3; scanf("%d%d%d", &e1, &e2, &e3); update(1, 0, 0, N-1, N-1, e1, e2, e3); } else { int e1, e2, e3, e4; scanf("%d%d%d%d", &e1, &e2, &e3, &e4); printf("%d\n", query(1, 0, 0, N-1, N-1, e1, e2, e3, e4)); } } } return 0; } Followed by: Post your reply here: |
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