QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#621888#7992. 【模板】线段树liuyz11WA 2474ms51076kbC++202.9kb2024-10-08 18:00:152024-10-08 18:00:16

Judging History

你现在查看的是最新测评结果

  • [2024-10-08 18:00:16]
  • 评测
  • 测评结果:WA
  • 用时:2474ms
  • 内存:51076kb
  • [2024-10-08 18:00:15]
  • 提交

answer

#include <bits/stdc++.h>
#define rep(x, l, r) for(int x = l; x <= r; x++)
#define repd(x, r, l) for(int x = r; x >= l; x--)
#define clr(x, y) memset(x, y, sizeof(x))
#define ls(x) (x << 1)
#define rs(x) (x << 1 | 1)
using namespace std;
typedef long long ll;
typedef unsigned int ui;
const int INF = 0x3f3f3f3f;
const int mod = 1 << 20;

const int MAXN = 2e5 + 5;

struct node{
    int flag;
    ui f[20];
}tree[MAXN * 4], z;
ui pw[25], C[25][25];
int a[MAXN], tag[MAXN * 4];

node merge(node a, node b){
    if(a.flag == -1) return b;
    if(b.flag == -1) return a;
    node res;
    rep(i, 0, 19){
        res.f[i] = 0;
        rep(j, 0, i) res.f[i] += a.f[j] * b.f[i - j];
    }
    return res;
}

void add(int p, int pl, int pr, ui x){
    pw[0] = 1;
    rep(i, 1, 19) pw[i] = pw[i - 1] * x;
    repd(i, 19, 1){
        rep(j, 0, i - 1){
            // if(pr - pl + 1 < i) continue;
            tree[p].f[i] += tree[p].f[j] * C[pr - pl + 1 - j][i - j] * pw[i - j];
        }
    }
}

void pushup(int p){
    tree[p] = merge(tree[ls(p)], tree[rs(p)]);
}

void pushdown(int p, int pl, int pr){
    if(!tag[p]) return;
    int mid = (pl + pr) >> 1;
    add(ls(p), pl, mid, tag[p]);
    add(rs(p), mid + 1, pr, tag[p]);
    tag[ls(p)] += tag[p];
    tag[rs(p)] += tag[p];
    tag[p] = 0;
}

void build(int p, int pl, int pr){
    if(pl == pr){
        tree[p].f[0] = 1;
        tree[p].f[1] = a[pl] - 1;
        return;
    }
    int mid = (pl + pr) >> 1;
    build(ls(p), pl, mid);
    build(rs(p), mid + 1, pr);
    pushup(p);
}

void update(int p, int pl, int pr, int l, int r, ui x){
    if(pl > r || pr < l) return;
    if(pl >= l && pr <= r){
        add(p, pl, pr, x);
        tag[p] += x;
        return;
    }
    pushdown(p, pl, pr);
    int mid = (pl + pr) >> 1;
    update(ls(p), pl, mid, l, r, x);
    update(rs(p), mid + 1, pr, l, r, x);
    pushup(p);
}

node query(int p, int pl, int pr, int l, int r){
    if(pl > r || pr < l) return z;
    if(pl >= l && pr <= r) return tree[p];
    pushdown(p, pl, pr);
    int mid = (pl + pr) >> 1;
    return merge(query(ls(p), pl, mid, l, r), query(rs(p), mid + 1, pr, l, r));
}

int main(){
    z.flag = -1;
    int n, q;
    scanf("%d%d", &n, &q);
    rep(i, 1, 20){
        C[i][0] = C[i][i] = 1;
        rep(j, 1, i - 1) C[i][j] = C[i - 1][j - 1] + C[i - 1][j];
    }
    rep(i, 1, n) scanf("%d", &a[i]);
    build(1, 1, n);
    while(q--){
        int opt, l, r, x;
        scanf("%d%d%d", &opt, &l, &r);
        if(opt == 1){
            scanf("%d", &x);
            update(1, 1, n, l, r, x);
        }
        else{
            node res = query(1, 1, n, l, r);
            ui ans = 0;
            // rep(i, 0, 5) printf("%d  ", res.f[i]);
            // puts("");
            rep(i, 0, 19) ans += res.f[i];
            printf("%d\n", ans % mod);
        }
    }
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 5896kb

input:

10 10
969575 741825 24903 1047319 450475 256145 1045323 479255 810659 768323
1 5 6 3034
2 1 10
2 1 9
2 1 4
1 3 6 126904
2 5 5
2 9 9
1 7 7 853094
1 4 9 1025178
2 5 8

output:

1045541
1012343
558151
580413
810659
527353

result:

ok 6 lines

Test #2:

score: -100
Wrong Answer
time: 2474ms
memory: 51076kb

input:

200000 200000
496015 180543 330721 874799 740427 144379 598057 795949 323465 87657 683935 748203 748665 288301 846003 33033 746029 132621 876629 361899 701297 373189 256151 723161 377571 54947 91151 855991 433965 73347 155081 314317 790527 705555 1035217 298963 604641 203865 230029 802437 720769 843...

output:

746709
374347
936993
848159
163157
1036097
489785
825837
964243
44899
531251
1009113
1044363
411507
227139
197093
871455
880925
300813
175305
455827
291089
79815
1017259
116967
197
867207
541243
643281
793259
340127
308335
208595
579069
611487
246411
434083
601261
1028155
588787
980757
461327
241377...

result:

wrong answer 2nd lines differ - expected: '564663', found: '374347'