Merge pull request yosupo06#1250 from maspypy/1211

テストケース追加（1211

string/suffixarray/gen/almost_single.cpp

@@ -0,0 +1,50 @@
+#include <iostream>
+#include "random.h"
+#include "../params.h"
+
+using namespace std;
+
+int main(int, char* argv[]) {
+  long long seed = atoll(argv[1]);
+  auto gen = Random(seed);
+
+  string S;
+  if (seed == 0) {
+    // issue 1211 hack_sft
+    S = string(499981, 't');
+    S[7122] = 's';
+    S[249980] = 'g';
+    S[374980] = 's';
+    S[437480] = 'w';
+    S[468730] = 'o';
+    S[484355] = 'q';
+    S[492167] = 'v';
+    S[496073] = 'k';
+    S[498026] = 'h';
+    S[499003] = 'p';
+    S[499491] = 'd';
+    S[499735] = 'z';
+    S[499857] = 'g';
+    S[499918] = 'a';
+    S[499949] = 'l';
+    S[499964] = 'z';
+    S[499972] = 'z';
+    S[499980] = 'p';
+  } else if (seed == 1) {
+    // issue 1211 hack_sft_2
+    S = string(499981, 't');
+    S[124000] = 's';
+    S[499980] = 'p';
+  } else {
+    char c = 'a' + gen.uniform<int>(0, 25);
+    int N = N_MAX;
+    S = string(N, c);
+    int K = gen.uniform<int>(1, 5);
+    for (int k = 0; k < K; ++k) {
+      int i = gen.uniform<int>(0, N - 1);
+      S[i] = 'a' + gen.uniform<int>(0, 25);
+    }
+  }
+  printf("%s\n", S.c_str());
+  return 0;
+}

string/suffixarray/hash.json

@@ -9,6 +9,18 @@
   "all_same_03.out": "0b8c43188e00668c70d592bac4fd278baebc3de6bd588e99646deb641710d195",
   "all_same_04.in": "426d60084b919dcf54c8e7232451d2c4ec01612503286cd67c7fa90bd3e674a6",
   "all_same_04.out": "f43a20c12a346e012539d68bb9d3b8e084d6d97dfbf80d3f788f48c63975a733",
+  "almost_single_00.in": "254c23ed86cc2669fe803bf7dc3a05db5776d97ece31c79dc3adb05a1ab076ea",
+  "almost_single_00.out": "96d1aa8fab4e5a17a771e47e208787f0d0f5e5858f986bacacbc7c31d8053077",
+  "almost_single_01.in": "96708355a4d016e76c7b5469dc68b108e6fee0bd1a061430613472478bbd8551",
+  "almost_single_01.out": "21828679cd7ab708b09e1f3b5d0b5de9a65abc268a995ea8ed24ac8e53419b9e",
+  "almost_single_02.in": "a4e5403d17a9966372a761323d7848d30e3bc928bb91f05949d7925cdc724c69",
+  "almost_single_02.out": "4543820d064fe324e84c00e17ea0051d53a3937456848bf4e063b3b7e83868e5",
+  "almost_single_03.in": "5cb67022de87166e3ea564e5bd98e62869cb56f9a086b004d6a8a90f5681fdc8",
+  "almost_single_03.out": "cda0190457daca5e95a687bd782c204b25895d4b736b61704c1c967971de53c0",
+  "almost_single_04.in": "2553757d561954eb9867914805cc2d9ead5fbdaf719067962b2f1d9e988ad992",
+  "almost_single_04.out": "73eb3fa95e3cc2a81e661965dc4a06f4a40180189c4a0509a304928eef017117",
+  "almost_single_05.in": "20640ffac9077187c09057aa3b7e594d62e175982792d9fbf3648a717db72473",
+  "almost_single_05.out": "33c3e2c04860711554ee3cad9d785a1d4d490dbbe6ae981eaea0de15289add30",
   "binary_carry_00.in": "9c214260f81bf297bde681442c5ff3b851da46704a7606859f7baad8a8a351fc",
   "binary_carry_00.out": "4a58fc2478523046f543e796976382a54ad954706ca747671a75c167a4e69d44",
   "binary_carry_01.in": "8339f90cd04245a5d89829cffc056a4c87d7678c067a64b4c0841ae84c5c06b4",

string/suffixarray/info.toml

@@ -35,6 +35,9 @@ forum = "https://github.com/yosupo06/library-checker-problems/issues/50"
 [[tests]]
     name = "hack.in"
     number = 3
+[[tests]]
+    name = "almost_single.cpp"
+    number = 6
 
 [params]
     N_MAX = 500_000