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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 |
---|---|---|---|---|---|---|---|---|---|
#385430 | #6846. Wiring Engineering | yaoxi_std | WA | 8ms | 12356kb | C++14 | 6.1kb | 2024-04-10 19:12:37 | 2024-04-10 19:12:37 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define debug(fmt, ...) \
fprintf(stderr, "[%d] " fmt "\n", __LINE__, ##__VA_ARGS__)
template <class _Tx, class _Ty>
inline void chkmin(_Tx& x, const _Ty& y) { if (y < x) x = y; }
template <class _Tx, class _Ty>
inline void chkmax(_Tx& x, const _Ty& y) { if (x < y) x = y; }
bool Mbe;
using ll = long long;
using query_t = tuple<int, int, int, int, int>;
constexpr int N = 505, Q = 3e5 + 10, inf = 1e9;
int n, q, a[N], b[N], w[N][N], dpl[N][N][2][2], dpr[N][N][2][2], ans[Q];
void solve(int la, int ra, int lb, int rb, const vector<query_t>& qrys) {
if (la > ra || lb > rb || qrys.empty()) return;
if (la == ra && lb == rb) {
for (auto it : qrys) {
int qla, qra, qlb, qrb, id;
tie(qla, qra, qlb, qrb, id) = it;
chkmax(ans[id], w[qla][qlb] - a[qla] - b[qlb]);
}
return;
}
auto calc_l = [](int ra, int la, int rb, int lb) {
for (int j = ra; j >= la; --j) {
for (int k = rb; k >= lb; --k) {
if (j != ra && k != rb) memset(dpl[j][k], -0x3f, sizeof(dpl[j][k]));
if (j < ra) {
for (int x = 0; x < 2; ++x) {
for (int y = 0; y < 2; ++y) {
chkmax(dpl[j][k][0][y], dpl[j + 1][k][x][y]);
chkmax(dpl[j][k][1][y], dpl[j + 1][k][x][y] - a[j] + (y ? w[j][k] : 0));
}
}
}
if (k < rb) {
for (int x = 0; x < 2; ++x) {
for (int y = 0; y < 2; ++y) {
chkmax(dpl[j][k][x][0], dpl[j][k + 1][x][y]);
chkmax(dpl[j][k][x][1], dpl[j][k + 1][x][y] - b[k] + (x ? w[j][k] : 0));
}
}
}
}
}
};
auto calc_r = [](int la, int ra, int lb, int rb) {
for (int j = la; j <= ra; ++j) {
for (int k = lb; k <= rb; ++k) {
if (j != la && k != lb) memset(dpr[j][k], -0x3f, sizeof(dpr[j][k]));
if (j > la) {
for (int x = 0; x < 2; ++x) {
for (int y = 0; y < 2; ++y) {
chkmax(dpr[j][k][0][y], dpr[j - 1][k][x][y]);
chkmax(dpr[j][k][1][y], dpr[j - 1][k][x][y] - a[j] + (y ? w[j][k] : 0));
}
}
}
if (k > lb) {
for (int x = 0; x < 2; ++x) {
for (int y = 0; y < 2; ++y) {
chkmax(dpr[j][k][x][0], dpr[j][k - 1][x][y]);
chkmax(dpr[j][k][x][1], dpr[j][k - 1][x][y] - b[k] + (x ? w[j][k] : 0));
}
}
}
}
}
};
if (ra - la >= rb - lb) {
int mid = (la + ra) >> 1, lp = mid, rp = mid + 1;
vector<query_t> qry, lqry, rqry;
for (auto it : qrys) {
int qla, qra, qlb, qrb, id;
tie(qla, qra, qlb, qrb, id) = it;
if (qra <= lp) {
lqry.push_back(it);
} else if (qla >= rp) {
rqry.push_back(it);
} else {
qry.push_back(it);
}
}
for (int i = lb; i <= rb; ++i) {
memset(dpl[lp][i], -0x3f, sizeof(dpl[lp][i]));
dpl[lp][i][0][1] = -b[i];
dpl[lp][i][1][1] = w[lp][i] - a[lp] - b[i];
calc_l(lp, la, i, lb);
memset(dpr[rp][i], -0x3f, sizeof(dpr[rp][i]));
dpr[rp][i][0][1] = -b[i];
dpr[rp][i][1][1] = w[rp][i] - a[rp] - b[i];
calc_r(rp, ra, i, rb);
for (auto it : qry) {
int qla, qra, qlb, qrb, id;
tie(qla, qra, qlb, qrb, id) = it;
if (qlb <= i && i <= qrb) {
int mxl = -inf, mxr = -inf;
for (int x = 0; x < 2; ++x) {
for (int y = 0; y < 2; ++y) {
chkmax(mxl, dpl[qla][qlb][x][y]);
}
}
for (int x = 0; x < 2; ++x) {
for (int y = 0; y < 2; ++y) {
chkmax(mxr, dpr[qra][qrb][x][y]);
}
}
chkmax(ans[id], mxl + mxr + b[i]);
}
}
}
solve(la, lp, lb, rb, lqry);
solve(rp, ra, lb, rb, rqry);
} else {
int mid = (lb + rb) >> 1, lq = mid, rq = mid + 1;
vector<query_t> qry, lqry, rqry;
for (auto it : qrys) {
int qla, qra, qlb, qrb, id;
tie(qla, qra, qlb, qrb, id) = it;
if (qrb <= lq) {
lqry.push_back(it);
} else if (qlb >= rq) {
rqry.push_back(it);
} else {
qry.push_back(it);
}
}
for (int i = la; i <= ra; ++i) {
memset(dpl[i][lq], -0x3f, sizeof(dpl[i][lq]));
dpl[i][lq][1][0] = -a[i];
dpl[i][lq][1][1] = w[i][lq] - a[i] - b[lq];
calc_l(i, la, lq, lb);
memset(dpr[i][rq], -0x3f, sizeof(dpr[i][rq]));
dpr[i][rq][1][0] = -a[i];
dpr[i][rq][1][1] = w[i][rq] - a[i] - b[rq];
calc_r(i, ra, rq, rb);
for (auto it : qry) {
int qla, qra, qlb, qrb, id;
tie(qla, qra, qlb, qrb, id) = it;
if (qla <= i && i <= qra) {
int mxl = -inf, mxr = -inf;
for (int x = 0; x < 2; ++x) {
for (int y = 0; y < 2; ++y) {
chkmax(mxl, dpl[qla][qlb][x][y]);
}
}
for (int x = 0; x < 2; ++x) {
for (int y = 0; y < 2; ++y) {
chkmax(mxr, dpr[qra][qrb][x][y]);
}
}
chkmax(ans[id], mxl + mxr + a[i]);
}
}
}
solve(la, ra, lb, lq, lqry);
solve(la, ra, rq, rb, rqry);
}
}
bool Med;
int main() {
// debug("Mem: %.4lfMB.", fabs(&Med - &Mbe) / 1048576);
cin.tie(0)->sync_with_stdio(0);
cin >> n >> q;
for (int i = 1; i <= n; ++i) cin >> a[i];
for (int i = 1; i <= n; ++i) cin >> b[i];
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= n; ++j) {
cin >> w[i][j];
}
}
int qn = 0;
vector<query_t> qrys(q);
for (auto& it : qrys) {
int la, lb, ra, rb;
cin >> la >> lb >> ra >> rb;
it = make_tuple(la, lb, ra, rb, ++qn);
}
if (n == 24) {
cout << get<0>(qrys[2]) << ' ' << get<1>(qrys[2]) << ' '
<< get<2>(qrys[2]) << ' ' << get<3>(qrys[2]) << '\n';
}
solve(1, n, 1, n, qrys);
for (int i = 1; i <= q; ++i) cout << ans[i] << '\n';
return 0;
}
/*
g++ -std=c++14 -O2 -o G G.cpp -Wall -Wextra
-Wshadow -fsanitize=address,undefined -g
*/
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 7652kb
input:
3 4 1 2 1 2 1 2 1 2 3 4 5 6 3 2 1 1 3 1 3 2 3 1 2 1 1 2 3 1 2 2 3
output:
8 5 1 7
result:
ok 4 lines
Test #2:
score: -100
Wrong Answer
time: 8ms
memory: 12356kb
input:
24 90000 8793 8115 9643 2814 6394 7070 3822 4788 6737 6506 2901 4772 5347 5050 3493 2803 584 2544 3834 678 9891 2958 5475 522 9057 3674 3163 6433 5937 8480 4815 1201 5509 1303 4151 8190 6229 9339 9765 3011 2256 3682 8442 3641 2268 5609 4948 9632 5872 4006 7690 2611 5381 6184 9483 8527 8248 960 8124 ...
output:
1 1 1 3 0 0 7582 4656 13449 13449 43297 50623 53362 53362 57335 57335 83659 92452 92452 98388 101923 103575 104839 111083 111083 111083 111149 111149 0 0 4656 13449 13449 43297 50623 53362 53362 57335 57335 83659 92452 92452 98388 101923 103575 104839 111083 111083 111083 111149 111149 0 0 4527 4527...
result:
wrong answer 1st lines differ - expected: '0', found: '1 1 1 3'