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#245947#4669. Genetic Modificationssherman2023WA 1ms8068kbC++143.8kb2023-11-10 14:45:032023-11-10 14:45:04

Judging History

你现在查看的是最新测评结果

  • [2023-11-10 14:45:04]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:8068kb
  • [2023-11-10 14:45:03]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

const int N = 100000 + 5, N1 = 2000 + 5;

int n, m;
int f[N1][N1], sum[N];
int g[N1][N1];
int nex[N], op[N], tot = 0;
int f2[N][25], g2[N][25];
char s[N], t[N];

void DFS(int x, int y) {
	if(x == 0) return;
	for(int i = x - 1; i >= nex[x - 1] - 1; -- i) {
		if(f[i][y - 1]) {
			DFS(i, y - 1);
			break;
		}
	}
	op[++ tot] = x;
	printf("%d ", x);
}

void DFS2(int x, int y) {
	if(x == 0) return;
	for(int i = x - 1; i >= nex[x - 1] - 1; -- i) {
		if(f2[i][y - 1]) {
			DFS(i, y - 1);
			break;
		}
	}
	op[++ tot] = x;
	printf("%d ", x);
}

int main() {
//	freopen("sequence.in", "r", stdin);
//	freopen("sequence.out", "w", stdout);

	scanf("%s", s + 1);
	scanf("%s", t + 1);
	
	n = strlen(s + 1), m = strlen(t + 1);
	
	int p = 1;
	for(int i = 1; i < m; ++ i) {
		if(t[i] == t[i + 1]) p = 0;
	}
 	if(n <= 2000) {
 		sum[0] = 0;
		for(int i = 1; i <= n; ++ i) sum[i] = sum[i - 1] + s[i] - 'A';
 		
		nex[1] = 1;
		for(int i = 2; i <= n; ++ i) {
			if(s[i] == s[i - 1]) nex[i] = nex[i - 1];
			else nex[i] = i;
		}
		
		f[0][0] = 1, g[0][0] = 1;
		for(int i = 1; i <= n; ++ i) g[i][0] = g[i - 1][0] + f[i][0];
		for(int i = 1; i <= m; ++ i) {
			for(int j = 1; j <= n; ++ j) {
				if(s[j] != t[i]) continue;
				if(nex[j - 1] - 1 > 0) f[j][i] = g[j - 1][i - 1] - g[nex[j - 1] - 2][i - 1];
				else f[j][i] = g[j - 1][i - 1];
				if(f[j][i]) f[j][i] = 1;
			}
			g[0][i] = f[0][i];
			for(int j = 1; j <= n; ++ j) g[j][i] = g[j - 1][i] + f[j][i];
		}
		
		for(int i = n; i >= 1; -- i) {
			if(f[i][m] == 1 && (sum[n] - sum[i] == 0 || sum[n] - sum[i] == n - i)) {
				puts("YES");
				DFS(i, m);
				int isok = 1;
				for(int j = 1; j <= tot; ++ j) {
					if(s[op[j]] != t[j] || op[j - 1] < nex[op[j] - 1] - 1) isok = 0;
				}
				return 0;
			}
		}
		
		puts("NO");
		
		return 0;
	}
	
	if(n <= 100000 && m <= 20) {
		sum[0] = 0;
		for(int i = 1; i <= n; ++ i) sum[i] = sum[i - 1] + s[i] - 'A';
		nex[1] = 1;
		for(int i = 2; i <= n; ++ i) {
			if(s[i] == s[i - 1]) nex[i] = nex[i - 1];
			else nex[i] = i;
		}
		
		f2[0][0] = 1, g2[0][0] = 1;
		for(int i = 1; i <= n; ++ i) g2[i][0] = g2[i - 1][0] + f2[i][0];
		for(int i = 1; i <= m; ++ i) {
			for(int j = 1; j <= n; ++ j) {
				if(s[j] != t[i]) continue;
				if(nex[j - 1] - 1 > 0) f2[j][i] = g2[j - 1][i - 1] - g2[nex[j - 1] - 2][i - 1];
				else f2[j][i] = g2[j - 1][i - 1];
				if(f2[j][i]) f2[j][i] = 1;
			}
			g2[0][i] = f2[0][i];
			for(int j = 1; j <= n; ++ j) g2[j][i] = g2[j - 1][i] + f2[j][i];
		}
		
		for(int i = n; i >= 1; -- i) {
			if(f[i][m] == 1 && (sum[n] - sum[i] == 0 || sum[n] - sum[i] == n - i)) {
				puts("YES");
				DFS2(i, m);
				return 0;
			}
		}
		
		puts("NO");
		
		return 0;
	}
	
	if(p) {
		sum[0] = 0;
		for(int i = 1; i <= n; ++ i) sum[i] = sum[i - 1] + s[i] - 'A';
		
		int las = 0;
		tot = 0;
		for(int i = 1; i <= n; ++ i) {
			if(sum[i - 1] - sum[las] == 0 || sum[i - 1] - sum[las] == i - 1 - las) {
				if(s[i] == t[tot + 1]) {
					tot ++;
					op[tot] = i;
					las = i;
				}
			}
		}
		
		if(sum[n] - sum[las] == 0 | sum[n] - sum[las] == n - las) {
			if(tot == m) {
				puts("YES");
				for(int i = 1; i <= tot; ++ i) printf("%d ", op[i]);
				return 0;
			}
		}
		
		las = 0, tot = 0;
		int fi = 1;
		for(int i = 1; i <= n; ++ i) {
			if(fi == 1 && s[i] == t[tot + 1]) continue;
			if(s[i] != t[tot + 1]) {
				fi = 0;
				continue;
			}
			if(sum[i - 1] - sum[las] == 0 || sum[i - 1] - sum[las] == i - 1 - las) {
				tot ++;
				op[tot] = i;
				las = i;
			}
		}
		
		if(sum[n] - sum[las] == 0 | sum[n] - sum[las] == n - las) {
			if(tot == m) {
				puts("YES");
				for(int i = 1; i <= tot; ++ i) printf("%d ", op[i]);
				return 0;
			}
		}
		
		puts("NO");
		
		return 0;
	}

	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 8068kb

input:

BBAAABBAAABAAA
BAAB

output:

YES
2 5 8 11 

result:

ok good solution

Test #2:

score: 0
Accepted
time: 1ms
memory: 7980kb

input:

ABABABABAB
ABAB

output:

NO

result:

ok no solution

Test #3:

score: -100
Wrong Answer
time: 1ms
memory: 3860kb

input:

BBAAAAABBAAAAAABBABAABBBBBAABBBAAABABBABABBBAAABBAAAABBBBBABAABBBAABBBBBBBABBABABBAAAABBAAAABAAAABBABAAAAAAABBBBAAAAAABAABABBAAAAABBBBAABABABAAAAABBBABABBAABABBBBAABAABBBBBABBABABBAAABBAAAABBBABBABAAAABBBAABAAABBBAAAAAAAAAAAAABABBAABBBBABABAABBBBABAABBAAABABBBBAAAAAAAABBAAAABBABABABBBAAABAABBABBAAAA...

output:


result:

wrong output format Unexpected end of file - token expected