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답안 #336285

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
336285 2020-12-15T03:44:29 Z tengiz05 Bigger segments (IZhO19_segments) C++17
27 / 100
 1500 ms 24068 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define FASTIO ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
#define PI acos(-1)
#define ld long double
const int mod = 1e9+7, N = 5005;
int msb(int val){return sizeof(int)*8-__builtin_clzll(val);}
int a[N], n, m, k;
vector<pii> dp[N];
int pr[N];
void solve(int test_case){
	int i, j;
	cin >> n;
	for(i=1;i<=n;i++){
		cin >> a[i];
		pr[i]=a[i];pr[i]+=pr[i-1];
	}
	for(i=1;i<=n;i++){
		dp[i].pb({pr[i], 1});
	}
	for(i=1;i<=n;i++){
		for(j=1;j<i;j++){
			int s = pr[i]-pr[j];
			int pos = lower_bound(all(dp[j]), pii{s,-1})-dp[j].begin();//pos--;
			int mx=0;
			if(pos<0)continue;
			bool f = false;
			//if(i == 5)cout << s << '\n';
			for(k=0;k<dp[j].size();k++){
				if(dp[j][k].ff > s)continue;
				mx = max(mx, dp[j][k].ss);f=true;
				//if(i==5)cout << dp[j][k].ff << ' ' << dp[j][k].ss << '\n';
			}
			if(f)dp[i].pb({s, mx+1});
		}sort(all(dp[i]));
	}
/*	for(i=1;i<=n;i++){
		cout << "doing " << i<< '\n';
		for(auto [x, y] : dp[i]){
			cout << x << ' ' << y << '\n';
		}
	}*/
	int ans = 1;
	for(auto [x, y] : dp[n]){
		ans = max(ans, y);
	} 
	cout << ans << '\n';
	return;
}

signed main(){
	FASTIO;
#define MULTITEST 0
#if MULTITEST
	int ___T;
	cin >> ___T;
	for(int T_CASE = 1; T_CASE <= ___T; T_CASE++)
		solve(T_CASE);
#else
	solve(1);
#endif
	return 0;
}

Compilation message

segments.cpp: In function 'void solve(long long int)':
segments.cpp:35:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |    for(k=0;k<dp[j].size();k++){
      |            ~^~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 31 ms 2704 KB Output is correct
18 Correct 38 ms 3052 KB Output is correct
19 Correct 42 ms 3180 KB Output is correct
20 Correct 45 ms 3180 KB Output is correct
21 Correct 32 ms 3052 KB Output is correct
22 Correct 17 ms 2156 KB Output is correct
23 Correct 8 ms 1388 KB Output is correct
24 Correct 42 ms 3052 KB Output is correct
25 Correct 43 ms 3052 KB Output is correct
26 Correct 36 ms 3180 KB Output is correct
27 Correct 24 ms 2284 KB Output is correct
28 Correct 33 ms 3052 KB Output is correct
29 Correct 41 ms 3052 KB Output is correct
30 Correct 47 ms 3052 KB Output is correct

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 31 ms 2704 KB Output is correct
18 Correct 38 ms 3052 KB Output is correct
19 Correct 42 ms 3180 KB Output is correct
20 Correct 45 ms 3180 KB Output is correct
21 Correct 32 ms 3052 KB Output is correct
22 Correct 17 ms 2156 KB Output is correct
23 Correct 8 ms 1388 KB Output is correct
24 Correct 42 ms 3052 KB Output is correct
25 Correct 43 ms 3052 KB Output is correct
26 Correct 36 ms 3180 KB Output is correct
27 Correct 24 ms 2284 KB Output is correct
28 Correct 33 ms 3052 KB Output is correct
29 Correct 41 ms 3052 KB Output is correct
30 Correct 47 ms 3052 KB Output is correct
31 Correct 35 ms 620 KB Output is correct
32 Execution timed out 1587 ms 24068 KB Time limit exceeded
33 Halted 0 ms 0 KB -

Subtask #4
0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 31 ms 2704 KB Output is correct
18 Correct 38 ms 3052 KB Output is correct
19 Correct 42 ms 3180 KB Output is correct
20 Correct 45 ms 3180 KB Output is correct
21 Correct 32 ms 3052 KB Output is correct
22 Correct 17 ms 2156 KB Output is correct
23 Correct 8 ms 1388 KB Output is correct
24 Correct 42 ms 3052 KB Output is correct
25 Correct 43 ms 3052 KB Output is correct
26 Correct 36 ms 3180 KB Output is correct
27 Correct 24 ms 2284 KB Output is correct
28 Correct 33 ms 3052 KB Output is correct
29 Correct 41 ms 3052 KB Output is correct
30 Correct 47 ms 3052 KB Output is correct
31 Correct 35 ms 620 KB Output is correct
32 Execution timed out 1587 ms 24068 KB Time limit exceeded
33 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 640 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 31 ms 2704 KB Output is correct
18 Correct 38 ms 3052 KB Output is correct
19 Correct 42 ms 3180 KB Output is correct
20 Correct 45 ms 3180 KB Output is correct
21 Correct 32 ms 3052 KB Output is correct
22 Correct 17 ms 2156 KB Output is correct
23 Correct 8 ms 1388 KB Output is correct
24 Correct 42 ms 3052 KB Output is correct
25 Correct 43 ms 3052 KB Output is correct
26 Correct 36 ms 3180 KB Output is correct
27 Correct 24 ms 2284 KB Output is correct
28 Correct 33 ms 3052 KB Output is correct
29 Correct 41 ms 3052 KB Output is correct
30 Correct 47 ms 3052 KB Output is correct
31 Correct 35 ms 620 KB Output is correct
32 Execution timed out 1587 ms 24068 KB Time limit exceeded
33 Halted 0 ms 0 KB -