이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include<bits/stdc++.h>
using namespace std;
typedef long long llint;
typedef pair <int, int> pi;
const int MAXN = 2805;
int n, q;
int cost[MAXN];
pi pa[MAXN], pb[MAXN];
int upp[MAXN*3][MAXN*3], rig[MAXN*3][MAXN*3];
llint dp[MAXN*3][MAXN*3];
vector <llint> vx, vy;
void precompute () {
for (int i = 1; i <= n; i++) {
vx.push_back(pa[i].first); vy.push_back(pa[i].second);
vx.push_back(pb[i].first); vy.push_back(pb[i].second);
}
sort(vx.begin(), vx.end());
vx.erase(unique(vx.begin(), vx.end()), vx.end());
sort(vy.begin(), vy.end());
vy.erase(unique(vy.begin(), vy.end()), vy.end());
for (int i = 1; i <= n; i++) {
int ix = lower_bound(vx.begin(), vx.end(), pa[i].first) - vx.begin();
int iy = lower_bound(vy.begin(), vy.end(), pa[i].second) - vy.begin();
int jx = lower_bound(vx.begin(), vx.end(), pb[i].first) - vx.begin();
int jy = lower_bound(vy.begin(), vy.end(), pb[i].second) - vy.begin();
if (iy == jy) {
for (int k = ix; k < jx; k++) {
rig[k][iy] = max(rig[k][iy], cost[i]);
}
} else {
for (int k = iy; k < jy; k++) {
upp[ix][k] = max(upp[ix][k], cost[i]);
}
}
}
for (int i = (int)vx.size() - 1; i >= 0; i--) {
for (int j = (int) vy.size() - 1; j >= 0; j--) {
llint res = 0;
if (i + 1 < vx.size()) res = max(res, dp[i + 1][j] + rig[i][j] * (vx[i + 1] - vx[i]));
if (j + 1 < vy.size()) res = max(res, dp[i][j + 1] + upp[i][j] * (vy[j + 1] - vy[j]));
dp[i][j] = res;
}
}
}
llint upit (llint x, llint y) {
//cout << "upit " << x << " " << y << endl;
int i = lower_bound(vx.begin(), vx.end(), x) - vx.begin();
int j = lower_bound(vy.begin(), vy.end(), y) - vy.begin();
llint res = dp[i][j];
if (j - 1 >= 0 && y != vy[j]) {
for (int k = i; k < vx.size(); k++) {
res = max(res, dp[k][j] + upp[k][j - 1] * (vy[j] - y));
}
}
if (i - 1 >= 0 && x != vx[i]) {
for (int k = j; k < vy.size(); k++) {
res = max(res, dp[i][k] + rig[i - 1][k] * (vx[i] - x));
}
}
return res;
}
int main () {
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n >> q;
for (int i = 1; i <= n; i++) {
int t, a, b;
cin >> t >> a >> b >> cost[i];
cost[i] /= 2;
llint x = t, y = a;
pa[i] = {x - y, x + y};
x = t + abs(a - b), y = b;
pb[i] = {x - y, x + y};
//cout << "bla " << pa[i].first << " " << pa[i].second << " " << pb[i].first << " " << pb[i].second << " " << cost[i] << endl;
}
precompute();
for (int i = 1; i <= q; i++) {
int x, y;
cin >> x >> y;
cout << upit(x - y, x + y) << '\n';
}
return 0;
}
컴파일 시 표준 에러 (stderr) 메시지
bodyguard.cpp: In function 'void precompute()':
bodyguard.cpp:46:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
46 | if (i + 1 < vx.size()) res = max(res, dp[i + 1][j] + rig[i][j] * (vx[i + 1] - vx[i]));
| ~~~~~~^~~~~~~~~~~
bodyguard.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
47 | if (j + 1 < vy.size()) res = max(res, dp[i][j + 1] + upp[i][j] * (vy[j + 1] - vy[j]));
| ~~~~~~^~~~~~~~~~~
bodyguard.cpp: In function 'llint upit(llint, llint)':
bodyguard.cpp:59:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | for (int k = i; k < vx.size(); k++) {
| ~~^~~~~~~~~~~
bodyguard.cpp:64:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
64 | for (int k = j; k < vy.size(); k++) {
| ~~^~~~~~~~~~~
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