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;
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define in insert
#define all(x) x.begin(),x.end()
#define pb push_back
#define eb emplace_back
#define ff first
#define ss second
#define int long long
typedef long long ll;
typedef vector<int> vi;
typedef set<int> si;
typedef multiset<int> msi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
// typedef pair<int, int> P;
template<typename T, typename U>
ostream & operator << (ostream &out, const pair<T, U> &c) {
out << c.first << ' ' << c.second;
return out;
}
template<typename T>
ostream & operator << (ostream &out, vector<T> &v) {
const int sz = v.size();
for (int i = 0; i < sz; i++) {
if (i) out << ' ';
out << v[i];
}
return out;
}
template<typename T>
istream & operator >> (istream &in, vector<T> &v) {
for (T &x : v) in >> x;
return in;
}
template<typename T, typename U>
istream & operator >> (istream &in, pair<T, U> &c) {
in >> c.first;
in >> c.second;
return in;
}
template<typename T>
void mxx(T &a, T b){if(b > a) a = b;}
template<typename T>
void mnn(T &a, T b){if(b < a) a = b;}
const int mxn = 5e3 + 10, MXLOG = 22, mod = 1e9 + 7, P = 1181, D = 1523, N = 2500;
const long long inf = 2e18 + 10;
int dp[mxn][mxn], a[mxn];
void go() {
int n;
cin >> n;
for(int i = 1; i <= n; i++) {
cin >> a[i];
}
for(int i = 1; i <= n; i++) {
for(int j = 1; j <= i; j++) {
mxx(dp[i][j], dp[i][j - 1]);
mxx(dp[i][j], dp[i - 1][i - 1]);
}
int sum1 = 0, sum2 = 0, l = i, cnt = 0;
for(int j = i + 1; j < n; j++) {
sum1 += a[j];
while(sum2 < sum1 && l > 1) {
sum2 += a[l--];
}
if(sum1 == sum2) cnt++;
mxx(dp[j + 1][i + 1], dp[i][l - 1] + cnt);
}
}
int ans = 0;
for(int i = n; i >= 1; i--) {
mxx(ans, dp[n][i]);
}
cout << ans << endl;
}
signed main() {
fast;
int t = 1;
// cin >> t;
while(t--) {
go();
}
return 0;
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |