Created
October 13, 2022 17:02
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#include <bits/stdc++.h> | |
using namespace std; | |
int T, q, d, k; | |
string x; | |
long long int cnt[26], t[26], s[26], tmp_t[26], tmp_s[26]; | |
bool test(){ | |
int p1 = 0, p2 = 25; | |
for(int i = 0; i < 26; i++){ | |
tmp_t[i] = t[i], tmp_s[i] = s[i]; | |
} | |
while(1){ | |
while(p1 < 26 && tmp_s[p1] == 0) p1++; | |
while(p2 >= 0 && tmp_t[p2] == 0) p2--; | |
if(p2 == -1) return false; | |
if(p1 == 26) return true; | |
if(p1 < p2) return true; | |
if(p1 > p2) return false; | |
long long int val = min(tmp_s[p1], tmp_t[p2]); | |
tmp_s[p1] -= val, tmp_t[p2] -= val; | |
} | |
} | |
int main(){ | |
cin.tie(nullptr), ios::sync_with_stdio(false); | |
cin >> T; | |
while(T--){ | |
for(int i = 0; i < 26; i++) s[i] = t[i] = 0; | |
s[0] = t[0] = 1; | |
cin >> q; | |
while(q--){ | |
cin >> d >> k >> x; | |
for(int i = 0; i < 26; i++) cnt[i] = 0; | |
for(char c : x) cnt[c - 'a']++; | |
for(int i = 0; i < 26; i++){ | |
if(d == 1) s[i] += cnt[i] * k; | |
else t[i] += cnt[i] * k; | |
} | |
cout << (test() ? "YES\n" : "NO\n"); | |
} | |
} | |
} |
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