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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#641469 | #5069. Vacation | Rikku_eq | WA | 2ms | 10132kb | C++14 | 8.5kb | 2024-10-14 20:39:27 | 2024-10-14 20:39:28 |
Judging History
answer
#include <bits/stdc++.h>
#define N 200005
#define INF 1000000000000000000
#define ls(u) tr[u].ls
#define rs(u) tr[u].rs
using namespace std;
typedef long long ll;
int n, m, C, rec[N*2];
int bid[N], st[N];
ll _f[N*2], _g[N*2];
struct SegT1
{
struct Seg { int ls, rs; ll f, g, sum, tgf, tgg; ll seq, lseq, rseq, aseq; } tr[N*2];
int rt, tot;
struct RET { ll f, g, sum; };
struct RET2 { ll seq, lseq, rseq, aseq; };
void pushdown (int u)
{
ll valf=tr[u].tgf, valg=tr[u].tgg;
tr[ls(u)].f+=valf; tr[ls(u)].tgf+=valf; tr[ls(u)].sum+=valf;
tr[rs(u)].f+=valf; tr[rs(u)].tgf+=valf; tr[rs(u)].sum+=valf;
tr[ls(u)].g+=valg; tr[ls(u)].tgg+=valg; tr[ls(u)].sum+=valg;
tr[rs(u)].g+=valg; tr[rs(u)].tgg+=valg; tr[rs(u)].sum+=valg;
tr[u].tgf=0; tr[u].tgg=0;
}
void merge (int u)
{
tr[u].f=max(tr[ls(u)].f, tr[rs(u)].f);
tr[u].g=max(tr[ls(u)].g, tr[rs(u)].g);
tr[u].sum=max(tr[ls(u)].f+tr[rs(u)].g, max(tr[ls(u)].sum, tr[rs(u)].sum));
}
void build (int &u, int l, int r)
{
tr[u]=(Seg){ ls(u), rs(u), -INF, -INF, -INF, 0, 0, -INF, -INF, -INF, 0 };
if (!u) { u=++tot; }
if (l==r) {
tr[u].f=_f[l+C]; tr[u].g=_g[l]; tr[u].sum=-INF;
tr[u].seq=rec[l];
tr[u].lseq=rec[l];
tr[u].rseq=rec[l];
tr[u].aseq=rec[l];
return;
}
int md=(l+r)>>1;
build(ls(u), l, md);
build(rs(u), md+1, r);
merge(u);
tr[u].seq=max(tr[ls(u)].rseq+tr[rs(u)].lseq, max(tr[ls(u)].seq, tr[rs(u)].seq));
tr[u].lseq=max(tr[ls(u)].lseq, tr[ls(u)].aseq+tr[rs(u)].lseq);
tr[u].rseq=max(tr[rs(u)].rseq, tr[rs(u)].aseq+tr[ls(u)].rseq);
tr[u].aseq=tr[ls(u)].aseq+tr[rs(u)].aseq;
}
void add_g (int u, int l, int r, int ql, int qr, ll num)
{
if (ql>r || qr<l) { return; }
if (ql<=l && r<=qr) { tr[u].g+=num; tr[u].tgg+=num; tr[u].sum+=num; return; }
pushdown(u);
int md=(l+r)>>1;
add_g(ls(u), l, md, ql, qr, num);
add_g(rs(u), md+1, r, ql, qr, num);
merge(u);
}
void add_f (int u, int l, int r, int ql, int qr, ll num)
{
if (ql>r || qr<l) { return; }
if (ql<=l && r<=qr) { tr[u].f+=num; tr[u].tgf+=num; tr[u].sum+=num; return; }
pushdown(u);
int md=(l+r)>>1;
add_f(ls(u), l, md, ql, qr, num);
add_f(rs(u), md+1, r, ql, qr, num);
merge(u);
}
RET qry (int u, int l, int r, int ql, int qr)
{
if (ql>r || qr<l) { return (RET){ -INF, -INF, -INF }; }
if (ql<=l && r<=qr) { return (RET){ tr[u].f, tr[u].g, tr[u].sum }; }
pushdown(u);
int md=(l+r)>>1;
RET resl=qry(ls(u), l, md, ql, qr);
RET resr=qry(rs(u), md+1, r, ql, qr);
return (RET){ max(resl.f, resr.f), max(resl.g, resr.g), max(resl.f+resr.g, max(resl.sum, resr.sum)) };
}
void upd_seq (int u, int l, int r, int id, ll num)
{
if (l==r) { tr[u].seq=tr[u].lseq=tr[u].rseq=tr[u].aseq=num; return; }
int md=(l+r)>>1;
if (id<=md) { upd_seq(ls(u), l, md, id, num); }
else { upd_seq(rs(u), md+1, r, id, num); }
tr[u].seq=max(tr[ls(u)].rseq+tr[rs(u)].lseq, max(tr[ls(u)].seq, tr[rs(u)].seq));
tr[u].lseq=max(tr[ls(u)].lseq, tr[ls(u)].aseq+tr[rs(u)].lseq);
tr[u].rseq=max(tr[rs(u)].rseq, tr[rs(u)].aseq+tr[ls(u)].rseq);
tr[u].aseq=tr[ls(u)].aseq+tr[rs(u)].aseq;
}
RET2 qry_seq (int u, int l, int r, int ql, int qr)
{
if (ql>r || qr<l) { return (RET2){ -INF, -INF, -INF, 0 }; }
if (ql<=l && r<=qr) { return (RET2){ tr[u].seq, tr[u].lseq, tr[u].rseq, tr[u].aseq }; }
int md=(l+r)>>1;
RET2 resl=qry_seq(ls(u), l, md, ql, qr);
RET2 resr=qry_seq(rs(u), md+1, r, ql, qr);
RET2 res;
res.seq=max(resl.rseq+resr.lseq, max(resl.seq, resr.seq));
res.lseq=max(resl.lseq, resl.aseq+resr.lseq);
res.rseq=max(resr.rseq, resr.aseq+resl.rseq);
res.aseq=resl.aseq+resr.aseq;
return res;
}
} ST1;
struct SegT2
{
struct Seg { int ls, rs; ll seq, sum; } tr[N*2];
int rt, tot;
void build (int &u, int l, int r)
{
if (!u) { u=++tot; }
if (l==r) {
tr[u].seq=ST1.qry_seq(ST1.rt, 1, n, st[bid[l]], st[bid[l]+1]-1).seq;
tr[u].sum=ST1.qry(ST1.rt, 1, n, st[bid[l]], st[bid[l]+1]-1).sum;
return;
}
int md=(l+r)>>1;
build(ls(u), l, md); build(rs(u), md+1, r);
tr[u].seq=max(tr[ls(u)].seq, tr[rs(u)].seq);
tr[u].sum=max(tr[ls(u)].sum, tr[rs(u)].sum);
}
void upd (int u, int l, int r, int id, ll sum, ll seq)
{
if (l==r) { tr[u].sum=sum; tr[u].seq=seq; return; }
int md=(l+r)>>1;
if (id<=md) { upd(ls(u), l, md, id, sum, seq); }
else { upd(rs(u), md+1, r, id, sum, seq); }
tr[u].seq=max(tr[ls(u)].seq, tr[rs(u)].seq);
tr[u].sum=max(tr[ls(u)].sum, tr[rs(u)].sum);
}
ll qry_seq (int u, int l, int r, int ql, int qr)
{
if (ql>r || qr<l) { return -INF; }
if (ql<=l && r<=qr) { return tr[u].seq; }
int md=(l+r)>>1;
return max(qry_seq(ls(u), l, md, ql, qr), qry_seq(rs(u), md+1, r, ql, qr));
}
ll qry_sum (int u, int l, int r, int ql, int qr)
{
if (ql>r || qr<l) { return -INF; }
if (ql<=l && r<=qr) { return tr[u].sum; }
int md=(l+r)>>1;
return max(qry_sum(ls(u), l, md, ql, qr), qry_sum(rs(u), md+1, r, ql, qr));
}
void uupd (int pos, ll sum, ll seq)
{
upd(rt, 1, bid[n], pos, sum, seq);
}
} ST2;
void uupd (int pos, int num)
{
ll ad=num-rec[pos];
ST1.add_g(ST1.rt, 1, n, st[bid[pos]], pos, ad);
if (bid[pos]>1) { ST1.add_f(ST1.rt, 1, n, pos-C, st[bid[pos]]-1, ad); }
ST1.upd_seq(ST1.rt, 1, n, pos, num);
rec[pos]=num;
int x=bid[pos];
ST2.uupd(x, ST1.qry(ST1.rt, 1, n, st[x], st[x+1]-1).sum, ST1.qry_seq(ST1.rt, 1, n, st[x], st[x+1]-1).seq);
x=bid[pos]-1;
if (x>=1) { ST2.uupd(x, ST1.qry(ST1.rt, 1, n, st[x], st[x+1]-1).sum, ST1.qry_seq(ST1.rt, 1, n, st[x], st[x+1]-1).seq); }
}
int main ()
{
// freopen("0test.in", "r", stdin);
// freopen("0test.out", "w", stdout);
scanf("%d %d %d", &n, &m, &C);
for (int i=1; i<=n; i++) { scanf("%d", &rec[i]); }
for (int i=1; i<=n; i++) {
bid[i]=((i-1)/C)+1;
if (!st[bid[i]]) { st[bid[i]]=i; }
} st[bid[n]+1]=n+1;
for (int i=1; i<=n; i++) {
_f[i]=(i!=st[bid[i]])*_f[i-1]+rec[i];
}
for (int i=n; i>=1; i--) {
_g[i]=(i!=st[bid[i]+1]-1)*_g[i+1]+rec[i];
}
ST1.build(ST1.rt, 1, n);
ST2.build(ST2.rt, 1, bid[n]);
// for (int i=1; i<=n; i++) {
// cout<<ST1.qry(ST1.rt, 1, n, i, i).sum<<" ";
// }
// cout<<endl;
// for (int i=1; i<=bid[n]; i++) {
// // cout<<ST1.qry(ST1.rt, 1, n, st[i], st[i+1]-1).sum<<" ";
// // cout<<ST1.qry_seq(ST1.rt, 1, n, st[i], st[i+1]-1).seq<<endl;
// cout<<ST2.qry_seq(ST2.rt, 1, n, i, i)<<" ";
// }
// cout<<endl;
for (int t=1; t<=m; t++) {
int op; scanf("%d", &op);
if (op==1) {
int x, y; scanf("%d %d", &x, &y); uupd(x, y);
cout<<"?\n";
}
else {
int l, r; scanf("%d %d", &l, &r);
ll ans=0;
if (r-l+1<=C) {
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, l, r).seq);
}
else if (bid[l]==bid[r]-1) {
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, l, l+C-1).seq);
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, r-C+1, r).seq);
ans=max(ans, ST1.qry(ST1.rt, 1, n, l, r-C).sum);
}
else {
ans=max(ans, ST2.qry_seq(ST2.rt, 1, bid[n], bid[l]+1, bid[r]-1));
if (bid[l]+1<=bid[r]-1) {
ans=max(ans, ST2.qry_sum(ST2.rt, 1, bid[n], bid[l]+1, bid[r]-2));
}
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, l, l+C-1).seq);
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, r-C+1, r).seq);
ans=max(ans, ST1.qry(ST1.rt, 1, n, st[bid[r]-1], r-C).sum);
ans=max(ans, ST1.qry(ST1.rt, 1, n, l, st[bid[l]+1]-1).sum);
}
printf("%lld\n", ans);
}
}
return 0;
}
詳細信息
Test #1:
score: 0
Wrong Answer
time: 2ms
memory: 10132kb
input:
5 6 3 0 -5 -3 8 -3 2 3 5 1 2 5 2 1 5 1 4 -3 2 3 5 2 1 5
output:
8 ? 10 ? 0 5
result:
wrong output format Expected integer, but "?" found