#include <iostream>
#include <complex>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <functional>
#include <bitset>
#include <queue>
#include <map>
#include <stack>
#include <cmath>
#include <cstdint>
///#include "fish.h"
using namespace std;
#pragma GCC optimize("O3")
#define endl '\n'
#define db double
#define ll long long
#define pb push_back
#define fs first
#define sd second
#define Mod long(1e9 + 7)
#define all(x) x.begin(), x.end()
#define unvisited long(-1)
#define Eps double(1e-9)
#define _for(i, n) for(int i = 0; i < (n); i++)
#define dbg(x) cout << #x ": " << x << endl;
const int Max = 1e6 + 7, Inf = 1e9 + 7;
void print(bool x) { cout << (x ? "YES" : "NO") << endl; }
string tostring (__int128 x)
{
string ans = "";
while(x > 0)
{
ans += (x % 10 + '0');
x /= 10;
}
reverse(all(ans));
return ans;
}
vector <vector<pair<ll, ll>>> v;
vector <unordered_map<int, int>> mp;
int N;//, mp[3007][3007];
int P(int i, int x)
{
int a = 0, b = v[i].size();
while (abs(a - b) != 1)
{
int c = (a + b) / 2;
if(v[i][c].fs <= a)
a = c;
else
b = c;
}
return a;
}
ll C(int i, int j, int k)
{
if(i >= 0 && i < N)
return max(0LL, v[i][P(i, j)].sd - v[i][P(i, k)].sd);
else
return 0LL;
}
void add(int i, int y, int w)
{
if(i < 0 || i >= N)
return;
if(mp[i][y] == 0){
v[i].push_back({ y, 0 });
mp[i][y] = v[i].size();
}
v[i][mp[i][y] - 1].sd += w;
}
long long max_weights(int n, int m, vector<int> X, vector<int> Y, vector<int> W)
{
v.clear(); mp.clear();
v.assign(n + 7, vector <pair<ll, ll>> ());
mp.assign(n + 1, unordered_map<int, int> ());
N = n;
for(int i = 0; i < m; i++){
add(X[i], Y[i]+1, W[i]);
add(X[i] - 2, Y[i]+1, 0);
add(X[i] - 1, Y[i]+1, 0);
add(X[i] + 1, Y[i]+1, 0);
add(X[i] + 2, Y[i]+1, 0);
}
for(int i = 0; i < n; i++)
{
v[i].push_back({ 0, 0 }); sort(all(v[i]));
for(int j = 0; j < (int) v[i].size(); j++){
if (j != 0) v[i][j].sd += v[i][j-1].sd;
mp[i][v[i][j].fs] = j;
}
}
vector <vector<ll>> dp1, dp2; ll ans = 0;
for(int i = 0; i < n; i++)
{
dp1.push_back(vector <ll> (v[i].size(), 0));
dp2.push_back(vector <ll> (v[i].size(), 0));
for(int j = 0; j < (int) v[i].size(); j++)
{
int hj = v[i][j].fs;
dp1[i][j] = C(i-1, hj, 0) + C(i+1, hj, 0);
dp2[i][j] = C(i-1, hj, 0) + C(i+1, hj, 0);
ans = max(ans, max(dp1[i][j], dp2[i][j]));
}
if(i > 1)
{
ll k = 0, mx = 0, tmp = 0;
for(k = 0; k < (int) v[i-2].size(); k++){
tmp = max(tmp, dp2[i-2][k]);
}
for(int j = 0; j < (int) v[i].size(); j++)
{
int hj = v[i][j].fs;
for(k; k < (int) v[i-2].size(); k++)
{
if(v[i-2][k].fs <= v[i][j].fs)
{
int hk = v[i-2][k].fs, hx = v[i-2][mx].fs;
ll val1 = dp2[i-2][mx] + C(i-1, hj, hx) + C(i+1, hj, 0);
ll val2 = dp2[i-2][k] + C(i-1, hj, hk) + C(i+1, hj, 0);
if(val1 < val2){
mx = k;
}
} else break;
}
int hx = v[i-2][mx].fs;
dp1[i][j] = max(dp1[i][j], dp2[i-2][mx] + C(i-1, hj, hx) + C(i+1, hj, 0));
dp1[i][j] = max(dp1[i][j], tmp + C(i+1, hj, 0));
ans = max(ans, dp1[i][j]);
}
}
if(i > 0)
{
ll k = v[i-1].size() - 1, mx = 0;
for(int j = (int) v[i].size() - 1; j >= 0; j--)
{
int hj = v[i][j].fs;
for(k; k >= 0; k--){
if(v[i-1][k].fs >= v[i][j].fs){
mx = max(mx, dp1[i-1][k]);
mx = max(mx, dp2[i-1][k]);
} else break;
}
dp2[i][j] = max(dp2[i][j], mx - C(i, hj, 0) + C(i+1, hj, 0));
ans = max(ans, max(dp1[i][j], dp2[i][j]));
}
ll tmp = 0;
for(k = 0; k < (int) v[i-1].size(); k++){
int hk = v[i-1][k].fs;
tmp = max(tmp, dp1[i-1][k] - C(i, hk, 0));
}
k = 0; mx = 0;
for(int j = 0; j < (int) v[i].size(); j++)
{
int hj = v[i][j].fs;
for(k; k < (int) v[i-1].size(); k++)
{
if(v[i-1][k].fs <= v[i][j].fs)
{
int hk = v[i-1][k].fs;
mx = max(mx + (v[i-1][k].sd - v[i-1][max(0LL, k-1)].sd),
dp1[i-1][k] - C(i, hk, 0));
} else break;
}
dp1[i][j] = max(dp1[i][j], mx + C(i+1, hj, 0));
dp1[i][j] = max(dp1[i][j], tmp + C(i+1, hj, 0));
dp2[i][j] = max(dp2[i][j], dp1[i][j]);
ans = max(ans, max(dp1[i][j], dp2[i][j]));
}
}
}
return ans;
}
Compilation message
fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:140:21: warning: statement has no effect [-Wunused-value]
140 | for(k; k < (int) v[i-2].size(); k++)
| ^
fish.cpp:169:21: warning: statement has no effect [-Wunused-value]
169 | for(k; k >= 0; k--){
| ^
fish.cpp:193:21: warning: statement has no effect [-Wunused-value]
193 | for(k; k < (int) v[i-1].size(); k++)
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
185 ms |
53452 KB |
Output is correct |
| 2 |
Correct |
233 ms |
62964 KB |
Output is correct |
| 3 |
Correct |
55 ms |
36276 KB |
Output is correct |
| 4 |
Correct |
36 ms |
36528 KB |
Output is correct |
| 5 |
Execution timed out |
1065 ms |
153744 KB |
Time limit exceeded |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
343 ms |
65484 KB |
Output is correct |
| 3 |
Correct |
377 ms |
74216 KB |
Output is correct |
| 4 |
Correct |
186 ms |
53308 KB |
Output is correct |
| 5 |
Correct |
250 ms |
62864 KB |
Output is correct |
| 6 |
Incorrect |
1 ms |
348 KB |
1st lines differ - on the 1st token, expected: '4044', found: '2022' |
| 7 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
38 ms |
36404 KB |
Output is correct |
| 2 |
Incorrect |
35 ms |
36272 KB |
1st lines differ - on the 1st token, expected: '882019', found: '0' |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
348 KB |
1st lines differ - on the 1st token, expected: '4044', found: '2022' |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
348 KB |
1st lines differ - on the 1st token, expected: '4044', found: '2022' |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
348 KB |
1st lines differ - on the 1st token, expected: '4044', found: '2022' |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
38 ms |
36404 KB |
Output is correct |
| 2 |
Incorrect |
35 ms |
36272 KB |
1st lines differ - on the 1st token, expected: '882019', found: '0' |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
185 ms |
53452 KB |
Output is correct |
| 2 |
Correct |
233 ms |
62964 KB |
Output is correct |
| 3 |
Correct |
55 ms |
36276 KB |
Output is correct |
| 4 |
Correct |
36 ms |
36528 KB |
Output is correct |
| 5 |
Execution timed out |
1065 ms |
153744 KB |
Time limit exceeded |
| 6 |
Halted |
0 ms |
0 KB |
- |
