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思路跟你一样,对拍了一下发现query少了个spread !感谢啊分享In Reply To:AC code Posted by:caizixian at 2010-02-09 14:21:48 > Source Code > Problem: 3667 User: caizixian > Memory: 3296K Time: 594MS > Language: C++ Result: Accepted > > * Source Code > > #include <stdio.h> > > > > #define Max(a, b) ((a)>(b)?(a):(b)) > > > > const int N = 50010; > > > > struct ST {int i,j,m,l,r,c,lc,rc;} st[2*N]; //区????´å®½åº¦çš„2å€� > > int up, n; > > > > void bd(int d, int x, int y) { > > st[d].i = x, st[d].j = y, st[d].m = (x+y)/2; > > st[d].c = st[d].lc = st[d].rc = y-x; > > if(x < y-1) { > > st[d].l = ++up; bd(up, x, st[d].m); > > st[d].r = ++up; bd(up, st[d].m, y); > > } > > } > > > > void spread(int d) { > > if(st[d].c == st[d].j-st[d].i) { > > int& l = st[d].l, &r = st[d].r; > > st[l].c = st[l].lc = st[l].rc = st[l].j-st[l].i; > > st[r].c = st[r].lc = st[r].rc = st[r].j-st[r].i; > > } else if(st[d].c == 0) { > > int& l = st[d].l, &r = st[d].r; > > st[l].c = st[l].lc = st[l].rc = 0; > > st[r].c = st[r].lc = st[r].rc = 0; > > } > > } > > > > void update(int d) { > > st[d].c = Max(Max(st[st[d].l].c, st[st[d].r].c), st[st[d].l].rc + st[st[d].r].lc); > > if(st[st[d].l].c == st[st[d].l].j-st[st[d].l].i) { > > st[d].lc = st[st[d].l].c + st[st[d].r].lc; > > } else st[d].lc = st[st[d].l].lc; > > if(st[st[d].r].rc == st[st[d].r].j-st[st[d].r].i) { > > st[d].rc = st[st[d].r].rc + st[st[d].l].rc; > > } else st[d].rc = st[st[d].r].rc; > > } > > > > void Empty(int d, int x, int y) { > > if(x <= st[d].i && y >= st[d].j) { > > st[d].c = st[d].lc = st[d].rc = 0; > > return; > > } > > > > spread(d); > > > > if(x < st[d].m) Empty(st[d].l, x, y); > > if(y > st[d].m) Empty(st[d].r, x, y); > > > > update(d); > > } > > > > void Fill(int d, int x, int y) { > > if(x <= st[d].i && y >= st[d].j) { > > st[d].c = st[d].lc = st[d].rc = st[d].j-st[d].i; > > return; > > } > > > > spread(d); > > > > if(x < st[d].m) Fill(st[d].l, x, y); > > if(y > st[d].m) Fill(st[d].r, x, y); > > > > update(d); > > } > > > > int Get(int d, int l) { > > > > spread(d); > > > > if(st[d].c < l) return -1; > > if(st[st[d].l].c >= l) > > return Get(st[d].l, l); > > else if(st[st[d].l].rc + st[st[d].r].lc >= l) { > > return st[st[d].l].j-st[st[d].l].rc; > > } > > return Get(st[d].r, l); > > } > > > > int main() > > { > > int i, nq, cmd, x, l, y; > > up = 0; > > scanf("%d%d", &n, &nq); > > bd(0, 0, n); > > while(nq--) { > > scanf("%d", &cmd); > > if(cmd == 1) { > > scanf("%d", &l); > > x = Get(0, l); > > if(x != -1) > > Empty(0, x, x+l); > > printf("%d\n", x+1); > > } else { > > scanf("%d%d", &x, &l); > > Fill(0, x-1, x+l-1); > > } > > } > > return 0; > > } > Followed by: Post your reply here: |
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