Submission #1654832

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Source Code Expand

#include <cstdio>
#include <algorithm>
#include <iostream>
#include <string>
#include <cstring>
#include <vector>
#include <set>
#include <map>
using namespace std;

int len, root, n, k, m;
int sum[1100000], dd[1100000], son[1100000][26], to[1100000], fa[1100000];
char S[410000];

void ins(char *S, int id) {
	int l = strlen(S);
	int now = root;
	for (int i = 0; i < l; i++) {
		sum[now] += 1;
		if (!son[now][S[i] - 'a'])
			son[now][S[i] - 'a'] = ++len;
		now = son[now][S[i] - 'a'];
	}
	sum[now] += 1;
	dd[now] += 1;
	to[id] = now;
}

void dfs(int k, int &ss) {
	for (int i = 0; i < 26; i++)
		if (son[k][i]) {
			dfs(son[k][i], son[k][i]);
			if (sum[son[k][i]] == sum[k])
				ss = son[k][i];
		}
}

int query(int k) {
	int ans = 0;
	while (k != root) {
		int kk = fa[k];
		for (int i = 0; i < 26; i++)
			if (son[kk][S[i] - 'a'] == k)
				break;
			else
				ans += sum[son[kk][S[i] - 'a']];
		ans += dd[kk];
		k = kk;
	}
	return ans + 1;
}

void ddd(int xx) {
	// printf("%d\n", xx);
	for (int i = 0; i < 26; i++)
		if (son[xx][i])
			fa[son[xx][i]] = xx, 
			ddd(son[xx][i]);
}

int main() {
	root = len = 1;
	scanf("%d", &n);
	for (int i = 1; i <= n; i++)
		scanf("%s", S), ins(S, i);
	dfs(root, root);
	ddd(root);
	// for (int i = 1; i <= len; i++)
	// 	for (int j = 0; j < 26; j++)
	// 		if (son[i][j])
	// 			fa[son[i][j]] = i;
	scanf("%d", &m);
	for (int i = 0; i < m; i++) {
		scanf("%d%s", &k, S);
		printf("%d\n", query(to[k]));
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:63:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
./Main.cpp:65:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", S), ins(S, i);
                            ^
./Main.cpp:72:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &m);
                 ^
./Main.cpp:74:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%s", &k, S);
                       ^

Judge Result