// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define FOR(i,x,y) for(ll i=x; i<y; i++)
#define FORNEG(i,x,y) for(ll i=x; i>y; i--)
const ll maxn = 100005;
set<ll> heights[maxn];
vector<ll> realheights[maxn];
map<ll,ll> weights[maxn];
vector<ll> p[maxn];
vector<array<ll,2>> dp[maxn];
vector<ll> pref[maxn][2];
vector<ll> pref2[maxn][2];
vector<ll> suff[maxn][2];
long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
std::vector<int> W) {
FOR(i,0,M){
Y[i]++;
weights[X[i]][Y[i]] = W[i];
if (X[i] > 0) heights[X[i]-1].insert(Y[i]);
heights[X[i]].insert(Y[i]);
heights[X[i]+1].insert(Y[i]);
}
FOR(i,0,maxn) heights[i].insert(0);
FOR(i,0,maxn) heights[i].insert(maxn);
FOR(i,0,maxn){
p[i][0] = 0;
ll prev = 0;
for (auto j : heights[i]){
if (j==0) continue;
p[i][j] = p[i][prev] + weights[i][j];
prev = j;
}
}
FOR(i,0,maxn){
for (auto k : heights[i]) realheights[i].push_back(k);
}
FOR(i,0,maxn){
FOR(k,0,2){
pref[i][k].resize(heights[i].size());
pref[i][k].resize(heights[i].size());
}
dp[i].resize(heights[i].size());
}
FOR(i,1,N+1){
FOR(X,0,dp[i].size()){
ll j = realheights[i][X];
FOR(k,0,2){
if (i<2) continue;
ll temp = 0;
ll add = 0;
if (k==0){
if (X==dp[i].size()-1) continue;
ll up = *upper_bound(realheights[i-1].begin(), realheights[i-1].end(), realheights[i][X]);
ll down = *(--upper_bound(realheights[i-1].begin(), realheights[i-1].end(), realheights[i][X]));
temp = max(temp, suff[i-1][0][up] - p[i-1][down]);
temp = max(temp, suff[i-1][1][up] - p[i-1][down]);
// FOR(p,j+1,N+1){
// if (fish[i-1][p]) add += weights[i-1][p];
// temp = max(temp, dp[i-1][p][0] + add);
// temp = max(temp, dp[i-1][p][1] + add);
// }
}else{
ll down = *(--upper_bound(realheights[i-1].begin(), realheights[i-1].end(), realheights[i][X]));
ll down2 = *(--upper_bound(realheights[i-2].begin(), realheights[i-2].end(), realheights[i][X]));
temp = max(temp, pref[i-1][0][down]);
temp = max(temp, pref[i-1][1][down] + p[i-2][down2]);
// FOR(p,0,j+1) if (fish[i-2][p]) add += weights[i-2][p];
// FOR(p,0,j+1){
// if (fish[i-2][p]) add -= weights[i-2][p];
// temp = max(temp, dp[i-1][p][0]);
// temp = max(temp, dp[i-1][p][1] + add);
// }
}
dp[i][X][k] = temp;
}
}
ll sz = realheights[i].size();
FOR(k,0,2){
ll tempadd = 0;
ll tempadd2 = 0;
FOR(j,0,sz){
tempadd += weights[i][realheights[i][j]];
suff[i][k][realheights[i][j]] = dp[i][j][k]+tempadd;
}
FOR(j,0,sz){
tempadd2 -= weights[i-1][realheights[i][j]];
pref[i][k][realheights[i][j]] = dp[i][j][k] + tempadd2;
pref2[i][k][realheights[i][j]] = dp[i][j][k];
}
ll prev = 0;
FOR(j,1,sz){
pref[i][k][realheights[i][j]] = max(pref[i][k][realheights[i][j]], pref[i][k][prev]);
pref2[i][k][realheights[i][j]] = max(pref2[i][k][realheights[i][j]], pref2[i][k][prev]);
prev = realheights[i][j];
}
prev = realheights[i][sz-1];
FORNEG(j,sz-2,-1){
suff[i][k][realheights[i][j]] = max(suff[i][k][realheights[i][j]], suff[i][k][prev]);
prev = realheights[i][j];
}
}
// cout << i << endl;
// cout << suff[2][2][0] << "FUCK" << endl;
}
// cout << dp[3][2][0] << endl;
ll ans = 0;
FOR(i,0,N+1){
FOR(j,0,dp[i].size()){
ans = max(dp[i][j][0], ans);
ans = max(dp[i][j][1], ans);
}
}
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:9:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::array<long long int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | #define FOR(i,x,y) for(ll i=x; i<y; i++)
......
68 | FOR(X,0,dp[i].size()){
| ~~~~~~~~~~~~~~~~
fish.cpp:68:9: note: in expansion of macro 'FOR'
68 | FOR(X,0,dp[i].size()){
| ^~~
fish.cpp:77:26: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::array<long long int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
77 | if (X==dp[i].size()-1) continue;
| ~^~~~~~~~~~~~~~~~
fish.cpp:75:20: warning: unused variable 'add' [-Wunused-variable]
75 | ll add = 0;
| ^~~
fish.cpp:69:16: warning: unused variable 'j' [-Wunused-variable]
69 | ll j = realheights[i][X];
| ^
fish.cpp:9:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::array<long long int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | #define FOR(i,x,y) for(ll i=x; i<y; i++)
......
151 | FOR(j,0,dp[i].size()){
| ~~~~~~~~~~~~~~~~
fish.cpp:151:9: note: in expansion of macro 'FOR'
151 | FOR(j,0,dp[i].size()){
| ^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
104 ms |
110932 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
38 ms |
81236 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
62 ms |
81480 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
40 ms |
81312 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
40 ms |
81312 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
40 ms |
81312 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
62 ms |
81480 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
104 ms |
110932 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
