Submission #63272

# Submission time Handle Problem Language Result Execution time Memory
63272 2018-08-01T08:18:38 Z 윤교준(#1834) Vim (BOI13_vim) C++11
51 / 100
2000 ms 80148 KB
#include <bits/stdc++.h>
#define rf(x) (x)=0;while(*p<48)p++;while(47<*p)(x)=((x)<<3)+((x)<<1)+(*p++&15);
#define pb push_back
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define befv(V) ((V)[(sz(V)-2)])
#define allv(V) ((V).begin()),((V).end())
#define sorv(V) sort(allv(V))
#define revv(V) reverse(allv(V))
#define univ(V) (V).erase(unique(allv(V)),(V).end())
#define clv(V) (V).clear()
#define upmin(a,b) (a)=min((a),(b))
#define upmax(a,b) (a)=max((a),(b))
#define INF (0x3f3f3f3f)
#define INFLL (0x3f3f3f3f3f3f3f3fll)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const bool debug = 0;
const int MAXN = 5005;

vector<pii> G[MAXN];
int D[MAXN][MAXN];
int dp[MAXN][MAXN];

vector<int> CV[11];
vector<int> IV;

int B[MAXN];
char A[MAXN];

int N, Ans;

int f(int x, int y) {
	int n = sz(IV);
	if(x+1 == n) return 0;
	int &ret = dp[x][y];
	if(ret < INF) return ret;

	for(int t = x+1; t < n; t++)
		upmin(ret, f(t, x+1) + D[IV[y]][IV[t]] + D[IV[t]][IV[x+1]]);
	return ret;
}

int main() {
	scanf("%d %s", &N, A+1);

	{
		vector<int> V, VI(1, 0);
		for(int i = 1; i <= N; i++) {
			if('e' == A[i]) {
				Ans += 2;
				continue;
			}
			V.eb(A[i]-'a'+1);
			if('e' == A[i-1]) VI.eb(sz(V)-1);
		}

		N = sz(V);
		for(int i = 1; i <= N; i++)
			B[i] = V[i-1];
		for(int v : VI) IV.eb(v+1);
	}
	if(!Ans) {
		puts("0");
		return 0;
	}

	if(debug) {
		printf("N=%d\n", N);
		for(int i = 1; i <= N; i++)
			printf("%d ", B[i]);
		puts("");
		for(int v : IV) printf("%d ", v);
		puts("");
	}

	for(int i = 1; i <= N; i++) CV[B[i]].eb(i);
	for(int i = 2; i <= N; i++) G[i].eb(i-1, 1);
	{
		int col[11] = {0, };
		for(int i = N; i; i--) {
			for(int j = 1; j <= 10; j++)
				if(col[j]) G[i].eb(col[j], 2);
			col[B[i]] = i;
		}
	}
	
	for(int i = 1; i <= N; i++) {
		priority_queue<pii, vector<pii>, greater<pii>> PQ;
		fill(D[i], D[i]+N+1, INF);
		D[i][i] = 0; PQ.push(pii(0, i));
		
		for(int idx, dst; !PQ.empty();) {
			tie(dst, idx) = PQ.top(); PQ.pop();
			if(D[i][idx] < dst) continue;

			for(auto &e : G[idx]) {
				int nidx = e.first;
				int ndst = dst + e.second;

				if(D[i][nidx] <= ndst) continue;
				D[i][nidx] = ndst;
				PQ.push(pii(ndst, nidx));
			}
		}
	}
	
	for(int i = 0; i < sz(IV); i++)
		fill(dp[i], dp[i]+sz(IV), INF);
	
	Ans += f(0, 0);

	cout << Ans << endl;
	return 0;
}

Compilation message

vim.cpp: In function 'int main()':
vim.cpp:49:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %s", &N, A+1);
  ~~~~~^~~~~~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 13 ms 2296 KB Output is correct
2 Correct 16 ms 2916 KB Output is correct
3 Correct 9 ms 2916 KB Output is correct
4 Correct 14 ms 2916 KB Output is correct
5 Correct 22 ms 2916 KB Output is correct
6 Correct 26 ms 3248 KB Output is correct
7 Correct 23 ms 3248 KB Output is correct
8 Correct 3 ms 3248 KB Output is correct
9 Correct 3 ms 3248 KB Output is correct
10 Correct 2 ms 3248 KB Output is correct
11 Correct 3 ms 3248 KB Output is correct
12 Correct 3 ms 3248 KB Output is correct
13 Correct 13 ms 3248 KB Output is correct
14 Correct 15 ms 3248 KB Output is correct
15 Correct 9 ms 3248 KB Output is correct
16 Correct 15 ms 3248 KB Output is correct
17 Correct 18 ms 3300 KB Output is correct
18 Correct 14 ms 3300 KB Output is correct
19 Correct 12 ms 3300 KB Output is correct
20 Correct 13 ms 3300 KB Output is correct
21 Correct 14 ms 3300 KB Output is correct
22 Correct 16 ms 3300 KB Output is correct
23 Correct 13 ms 3300 KB Output is correct
24 Correct 21 ms 3300 KB Output is correct
25 Correct 15 ms 3300 KB Output is correct
26 Correct 23 ms 3300 KB Output is correct
27 Correct 19 ms 3300 KB Output is correct
28 Correct 26 ms 3316 KB Output is correct
29 Correct 22 ms 3316 KB Output is correct
30 Correct 16 ms 3316 KB Output is correct
31 Correct 14 ms 3316 KB Output is correct
32 Correct 16 ms 3316 KB Output is correct
33 Correct 20 ms 3316 KB Output is correct
34 Correct 17 ms 3316 KB Output is correct
35 Correct 20 ms 3316 KB Output is correct
36 Correct 22 ms 3316 KB Output is correct
# Verdict Execution time Memory Grader output
1 Execution timed out 2037 ms 36828 KB Time limit exceeded
2 Execution timed out 2059 ms 70436 KB Time limit exceeded
3 Correct 1834 ms 70436 KB Output is correct
4 Execution timed out 2041 ms 70436 KB Time limit exceeded
5 Execution timed out 2021 ms 70436 KB Time limit exceeded
6 Execution timed out 2055 ms 80148 KB Time limit exceeded
7 Execution timed out 2045 ms 80148 KB Time limit exceeded
8 Execution timed out 2068 ms 80148 KB Time limit exceeded
9 Execution timed out 2036 ms 80148 KB Time limit exceeded
10 Execution timed out 2074 ms 80148 KB Time limit exceeded
# Verdict Execution time Memory Grader output
1 Runtime error 8 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Runtime error 11 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
3 Runtime error 8 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
4 Runtime error 9 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
5 Runtime error 9 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
6 Runtime error 15 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Runtime error 13 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
8 Runtime error 17 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
9 Runtime error 13 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
10 Runtime error 11 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
11 Runtime error 14 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
12 Runtime error 12 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
13 Runtime error 11 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
14 Runtime error 13 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
15 Runtime error 12 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
16 Runtime error 11 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
17 Runtime error 10 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
18 Runtime error 11 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
19 Runtime error 12 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)
20 Runtime error 13 ms 80148 KB Execution killed with signal 11 (could be triggered by violating memory limits)