#include <bits/stdc++.h>
using namespace std;
void OJize(){cin.tie(NULL);ios_base::sync_with_stdio(false);}
typedef long long ll;
const int IINF = 0x3f3f3f3f;
const ll LINF = 0x3f3f3f3f3f3f3f3f;
#define sz(X) (int)((X).size())
#define entire(X) X.begin(),X.end()
template <class T1, class T2>ostream&operator<<(ostream &os,pair<T1,T2>const&x){os<<'('<<x.first<<", "<<x.second<<')';return os;}
template <class Ch, class Tr, class Container>basic_ostream<Ch,Tr>&operator<<(basic_ostream<Ch,Tr>&os,Container const&x){os<<"[ ";for(auto&y:x)os<<y<<" ";return os<<"]";}
ll max_weights(int L, int n,
vector<int> X, vector<int> Y, vector<int> W){
vector<vector<ll>> grid(L, vector<ll>(L+1));
for(int i=0; i<n; i++) grid[X[i]][Y[i]] = (ll)W[i];
vector<ll> dinc(L+1), ddec(L+1);
// column _,
// last column height j,
// next will increase/decrease
for(int i=1; i<L; i++){
vector<ll> ndinc(L+1), nddec(L+1);
ndinc[0] = nddec[0] = ddec[0];
ndinc[L] = nddec[L] = dinc[L];
for(int y=0; y<=L; y++){
if(!(y == L || y == 0 || grid[i][y])) continue;
for(int y0=0; y0<y; y0++){ // inc
if(!(y0 == L || y0 == 0 || grid[i-1][y0])) continue;
// take [i-1][y0 to y-1]
ll val = dinc[y0];
for(int z=y0; z<y; z++) val+= grid[i-1][z];
ndinc[y] = max(ndinc[y], val);
if(y == L) nddec[y] = max(nddec[y], val);
}
for(int y0=y+1; y0<=L; y0++){ // dec
if(!(y0 == L || y0 == 0 || grid[i-1][y0])) continue;
// take [i][y to y0-1]
ll val = ddec[y0];
for(int z=y; z<y0; z++) val+= grid[i][z];
nddec[y] = max(nddec[y], val);
}
}
dinc = ndinc, ddec = nddec;
}
return max(
*max_element(entire(dinc)),
*max_element(entire(ddec))
);
}
#ifdef jh
int main(){OJize();
int n; cin>>n;
vector<int> X, Y, W;
for(int i=0; i<n; i++) for(int j=0; j<n; j++){
int x; cin>>x;
if(x){
X.push_back(j);
Y.push_back(n-1-i);
W.push_back(x);
}
}
cout << max_weights(n, sz(X), X, Y, W);
}
#endif
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
725 ms |
2097152 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Runtime error |
799 ms |
2097152 KB |
Execution killed with signal 9 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
703 ms |
2097152 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
468 KB |
1st lines differ - on the 1st token, expected: '216624184325', found: '214837477243' |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
468 KB |
1st lines differ - on the 1st token, expected: '216624184325', found: '214837477243' |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
212 KB |
Output is correct |
| 6 |
Correct |
1 ms |
212 KB |
Output is correct |
| 7 |
Correct |
0 ms |
212 KB |
Output is correct |
| 8 |
Correct |
0 ms |
212 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
468 KB |
1st lines differ - on the 1st token, expected: '216624184325', found: '214837477243' |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
703 ms |
2097152 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
725 ms |
2097152 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
