QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#270282 | #6836. A Plus B Problem | 1722087564 | WA | 245ms | 3852kb | C++20 | 5.8kb | 2023-11-30 18:01:38 | 2023-11-30 18:01:39 |
Judging History
answer
#include <bits/stdc++.h>
using i64 = long long;
struct Tag {
int val = -1;
void apply(Tag v) {
val = v.val;
}
};
struct Info {
int len = 1, pre = 0;
Info(int x = 0) {
pre = x;
}
friend Info operator+ (const Info &lhs, const Info &rhs) {
Info res;
res.len = lhs.len + rhs.len;
res.pre = lhs.pre;
if (lhs.pre == lhs.len) {
res.pre += rhs.pre;
}
return res;
}
void apply(Tag v) {
if (v.val == 0) {
pre = 0;
}
if (v.val == 1) {
pre = len;
}
}
};
struct SegTr {
int n;
std::vector<Tag> tag;
std::vector<Info> info;
SegTr(int n) {
this->n = n;
tag.resize(n * 4);
info.resize(n * 4);
}
void pushup(int p) {
info[p] = info[p * 2] + info[p * 2 + 1];;
}
void pushdown(int p) {
if (tag[p].val != -1) {
info[p * 2].apply(tag[p]);
info[p * 2 + 1].apply(tag[p]);
tag[p * 2].apply(tag[p]);
tag[p * 2 + 1].apply(tag[p]);
tag[p].val = -1;
}
}
void build(int p, int l, int r, std::vector<int> &a) {
if (l == r) {
info[p] = Info(a[l]);
return;
}
int m = (l + r) / 2;
build(p * 2, l, m, a);
build(p * 2 + 1, m + 1, r, a);
pushup(p);
};
Info rangeQuery(int p, int l, int r, int x, int y) {
if (l >= x && r <= y) {
return info[p];
}
pushdown(p);
int m = (l + r) / 2;
if (y <= m) {
return rangeQuery(p * 2, l, m, x, y);
}
if (x > m) {
return rangeQuery(p * 2 + 1, m + 1, r, x, y);
}
return rangeQuery(p * 2, l, m, x, y) + rangeQuery(p * 2 + 1, m + 1, r, x, y);
}
void rangeModify(int p, int l, int r, int x, int y, Tag v) {
if (l >= x && r <= y) {
info[p].apply(v);
tag[p].apply(v);
return;
}
int m = (l + r) / 2;
pushdown(p);
if (x <= m) {
rangeModify(p * 2, l, m, x, y, v);
}
if (y > m) {
rangeModify(p * 2 + 1, m + 1, r, x, y, v);
}
pushup(p);
};
};
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int n, q;
std::string a[2];
std::cin >> n >> q >> a[0] >> a[1];
std::reverse(a[0].begin(), a[0].end());
std::reverse(a[1].begin(), a[1].end());
a[0] = ' ' + a[0];
a[1] = ' ' + a[1];
std::vector<int> ans(n + 1);
std::vector<int> is0(n + 1), is9(n + 1);
for (int i = 1, flg = 0; i <= n; i++) {
int c1 = a[0][i] - '0';
int c2 = a[1][i] - '0';
int now = c1 + c2 + flg;
if (now >= 10) {
now -= 10;
flg = 1;
} else {
flg = 0;
}
ans[i] = now;
if (ans[i] == 0) {
is0[i] = 1;
}
if (ans[i] == 9) {
is9[i] = 1;
}
}
SegTr sgt0(n + 1), sgt9(n + 1);
sgt0.build(1, 1, n, is0);
sgt9.build(1, 1, n, is9);
auto check = [&](int i) {
assert(ans[i] >= 0 && ans[i] < 10);
};
auto get = [&](int i) -> int {
if ((sgt0.rangeQuery(1, 1, n, i, i).pre) == 1) {
ans[i] = 0;
}
if ((sgt9.rangeQuery(1, 1, n, i, i).pre) == 1) {
ans[i] = 9;
}
return ans[i];
};
while (q--) {
int r, c, d;
std::cin >> r >> c >> d;
// r = 1;
// c = std::rand() % n + 1;
// d = std::rand() % 10;
c = n - c + 1;
r -= 1;
int now = get(c);
int inc = d - (a[r][c] - '0');
if (inc == 0) {
std::cout << now << " " << 0 << "\n";
continue;
}
int ans2 = 2;
a[r][c] = '0' + d;
if (now + inc >= 10 && c < n) {
auto res = sgt9.rangeQuery(1, 1, n, c + 1, n);
int len = res.pre;
ans2 += len;
if (len > 0) {
sgt9.rangeModify(1, 1, n, c + 1, c + len, {0});
sgt0.rangeModify(1, 1, n, c + 1, c + len, {1});
}
if (c + len + 1 <= n) {
ans[c + len + 1] = get(c + len + 1) + 1;
if (ans[c + len + 1] == 9) {
sgt9.rangeModify(1, 1, n, c + len + 1, c + len + 1, {1});
}
check(c + len + 1);
ans2 += 1;
}
} else if (now + inc < 0 && c < n) {
auto res = sgt0.rangeQuery(1, 1, n, c + 1, n);
int len = res.pre;
ans2 += len;
if (len > 0) {
sgt9.rangeModify(1, 1, n, c + 1, c + len, {1});
sgt0.rangeModify(1, 1, n, c + 1, c + len, {0});
}
if (c + len + 1 <= n) {
ans[c + len + 1] = get(c + len + 1) - 1;
if (ans[c + len + 1] == 0) {
sgt0.rangeModify(1, 1, n, c + len + 1, c + len + 1, {1});
}
// check(c + len + 1);
ans2 += 1;
}
}
ans[c] = ((now + inc) % 10 + 10) % 10;
// check(c);
if (ans[c] == 0) {
sgt0.rangeModify(1, 1, n, c, c, {1});
}
if (ans[c] != 0) {
sgt0.rangeModify(1, 1, n, c, c, {0});
}
if (ans[c] == 9) {
sgt9.rangeModify(1, 1, n, c, c, {1});
}
if (ans[c] != 9) {
sgt9.rangeModify(1, 1, n, c, c, {0});
}
std::cout << ans[c] << " " << ans2 << "\n";
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3852kb
input:
5 5 01234 56789 2 1 0 2 2 1 2 3 2 2 4 3 2 5 4
output:
0 2 3 2 5 3 7 3 8 3
result:
ok 5 lines
Test #2:
score: 0
Accepted
time: 0ms
memory: 3688kb
input:
1 1 1 1 1 1 9
output:
0 2
result:
ok single line: '0 2'
Test #3:
score: -100
Wrong Answer
time: 245ms
memory: 3660kb
input:
10 1000000 6869373857 3130626142 1 9 2 1 10 0 2 7 6 1 1 0 1 7 6 2 10 4 2 3 9 2 4 2 2 4 4 2 7 0 1 2 4 1 9 8 1 3 7 1 7 1 1 1 5 2 1 6 1 3 5 2 5 8 2 6 5 1 6 3 1 3 8 2 4 2 2 6 3 2 2 6 1 10 9 2 1 1 2 5 4 1 1 8 2 4 0 1 9 1 1 1 8 2 4 2 2 9 2 1 10 3 1 8 9 1 4 6 2 3 0 1 1 6 1 7 1 1 10 9 2 4 4 2 5 9 2 1 8 1 9 ...
output:
6 2 2 2 9 0 3 2 2 8 4 2 6 2 2 2 4 2 6 5 6 3 2 4 7 2 2 2 8 2 1 2 5 2 1 3 2 3 8 3 8 2 2 2 6 2 1 3 3 3 7 2 7 3 0 2 9 3 6 4 0 0 1 3 4 2 7 3 0 3 8 3 8 3 8 2 2 0 3 3 0 3 2 3 5 2 9 2 4 2 8 2 3 3 5 3 3 2 5 0 4 2 2 2 1 2 3 2 7 4 9 3 4 2 5 3 0 4 4 2 3 2 3 2 5 3 6 4 3 0 8 2 9 3 9 3 0 2 1 4 7 2 5 2 5 2 3 0 0 2 ...
result:
wrong answer 52nd lines differ - expected: '3 2', found: '2 2'