oj.uz

Submission #290456

# Submission time Handle Problem Language Result Execution time Memory
290456 2020-09-03T20:32:38 Z MatheusLealV Bigger segments (IZhO19_segments) C++17
0 / 100
 7 ms 1152 KB 
#include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
#define rep(i, a, b) for (int i = (a); i < (b); ++i)
std::mt19937 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
using namespace std;

// #define int long long
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
ll mod = (1000000007LL);
inline ll Mod(ll a, ll b){return (a%b);}
inline ll poww(ll a, ll b){ll res = 1;while (b > 0){if(b & 1) res = (res * a)%mod;a = (a * a)%mod;b >>= 1;}return res;}
ll gcd (ll a, ll b) { while (b) { a %= b,swap(a, b);}return a;}
void read(vector<int> &w, int n){w.resize(n);for(int i = 0; i < n; i++) cin>>w[i];}
void print(vector<int> &w){for(int i =0; i < sz(w); i++){if(i == sz(w) - 1) cout<<w[i]<<"\n";else cout<<w[i]<<" ";}}
int prodmod(vector<int> w);
int summod(vector<int> w);
///CUIDADO COM MAXN
#define N 300050

int n, m, q, k, v[N], ans;
pii w[N];
string s;
int vis[100][100000];
int dp[100][100000], pref[N];
int solve(int i, int prev){
	if(i > n) return 0;
	if(vis[i][prev]) return dp[i][prev];
	int ans = -2000000;
	for(int j = i; j <= n; j++){
		if(pref[j] - pref[i-1] >= prev){
			ans = max(ans,1 + solve(j + 1, pref[j]-pref[i-1]));
		}
	}
	return dp[i][prev] = ans;
}
int32_t main(){
	ios::sync_with_stdio(false); cin.tie(0);
	cin>>n;
	for(int i = 1; i <= n; i++){
		cin>>v[i];
		pref[i] = pref[i-1] + v[i];
	}
	cout<<solve(1, 0)<<"\n";
}
/*
    CUIDADO COM MAXN, MOD, OVERFLOW 
    >Colocar (>DEFINE INT LONG LONG<) no inicio do template
    >mod = (1e9 + 7), por padrao (NAO ESQUECER DE ALTERAR)
    >NAO ESQUECER DEFINE INT LONG LONG
    > N = 1 ? 
*/
int summod(vector<int> w){int curr=0;for(int i=0;i<sz(w); i++){curr = (curr+w[i])%mod;if(curr<0)curr+=mod;}return curr;}
int prodmod(vector<int> w){int curr = 1;
for(int i = 0; i < sz(w); i++){if(w[i] >= mod) w[i] %= mod;curr = (curr * w[i]) % mod;if(curr < 0) curr += mod;}return curr;}

Subtask #1
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Runtime error 7 ms 1152 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Runtime error 7 ms 1152 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Runtime error 7 ms 1152 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Runtime error 7 ms 1152 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Runtime error 7 ms 1152 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -