結果
問題 | No.2131 Concon Substrings (COuNt Version) |
ユーザー | deuteridayo |
提出日時 | 2022-11-25 21:43:29 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 929 ms / 2,000 ms |
コード長 | 2,827 bytes |
コンパイル時間 | 5,106 ms |
コンパイル使用メモリ | 272,836 KB |
実行使用メモリ | 496,128 KB |
最終ジャッジ日時 | 2024-10-02 04:19:53 |
合計ジャッジ時間 | 10,804 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 382 ms
227,072 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 929 ms
496,128 KB |
testcase_08 | AC | 227 ms
126,720 KB |
testcase_09 | AC | 897 ms
495,872 KB |
testcase_10 | AC | 914 ms
493,952 KB |
testcase_11 | AC | 631 ms
345,728 KB |
testcase_12 | AC | 598 ms
327,936 KB |
testcase_13 | AC | 3 ms
6,820 KB |
testcase_14 | AC | 259 ms
147,456 KB |
testcase_15 | AC | 210 ms
119,808 KB |
testcase_16 | AC | 3 ms
6,816 KB |
testcase_17 | AC | 190 ms
107,008 KB |
testcase_18 | AC | 192 ms
108,416 KB |
testcase_19 | AC | 96 ms
56,064 KB |
ソースコード
#include<bits/stdc++.h> #include<atcoder/all> using namespace std; using namespace atcoder; using lint = long long; using ulint = unsigned long long; #define endl '\n' int const INF = 1<<30; lint const INF64 = 1LL<<61; // lint const mod = 1e9+7; long const mod = 998244353; using mint = modint998244353; lint ceilDiv(lint x, lint y){if(x >= 0){return (x+y-1)/y;}else{return x/y;}} lint floorDiv(lint x, lint y){if(x >= 0){return x/y;}else{return (x-y+1)/y;}} lint Sqrt(lint x){lint upper = 1e9;lint lower = 0;while(upper - lower > 0){lint mid = (1+upper + lower)/2;if(mid * mid > x){upper = mid-1;}else{lower = mid;}}return upper;} lint gcd(lint a,lint b){if(a<b)swap(a,b);if(a%b==0)return b;else return gcd(b,a%b);} lint lcm(lint a,lint b){return (a / gcd(a,b)) * b;} lint chmin(vector<lint>&v){lint ans = INF64;for(lint i:v){ans = min(ans, i);}return ans;} lint chmax(vector<lint>&v){lint ans = -INF64;for(lint i:v){ans = max(ans, i);}return ans;} double dist(double x1, double y1, double x2, double y2){return sqrt(pow(x1-x2, 2) + pow(y1-y2,2));} string toString(lint n){string ans = "";if(n == 0){ans += "0";}else{while(n > 0){int a = n%10;char b = '0' + a;string c = "";c += b;n /= 10;ans = c + ans;}}return ans;} string toString(lint n, lint k){string ans = toString(n);string tmp = "";while(ans.length() + tmp.length() < k){tmp += "0";}return tmp + ans;} vector<lint>prime;void makePrime(lint n){prime.push_back(2);for(lint i=3;i<=n;i+=2){bool chk = true;for(lint j=0;j<prime.size() && prime[j]*prime[j] <= i;j++){if(i % prime[j]==0){chk=false;break;}}if(chk)prime.push_back(i);}} lint Kai[20000001]; bool firstCallnCr = true; lint ncrmodp(lint n,lint r,lint p){ if(firstCallnCr){ Kai[0] = 1; for(int i=1;i<=20000000;i++){ Kai[i] = Kai[i-1] * i; Kai[i] %= mod;} firstCallnCr = false;} if(n<0)return 0; if(n < r)return 0;if(n==0)return 1;lint ans = Kai[n];lint tmp = (Kai[r] * Kai[n-r]) % p;for(lint i=1;i<=p-2;i*=2){if(i & p-2){ans *= tmp;ans %= p;}tmp *= tmp;tmp %= p;}return ans;} #define rep(i, n) for(int i = 0; i < n; i++) #define repp(i, x, y) for(int i = x; i < y; i++) #define vec vector struct edge{ int to; }; using graph = vector<vector<edge>>; int main(){ lint n; cin >> n; vec<vec<vec<mint>>>dp(n+1, vec<vec<mint>>(n+2, vec<mint>(3, 0))); dp[0][0][0] = 1; rep(i, n) { for(int j = n; j >= 0; j--) { dp[i+1][j+1][0] += dp[i][j][2]; dp[i+1][j][0] += dp[i][j][0] * 25; dp[i+1][j][1] += dp[i][j][0] + dp[i][j][1] * 25; dp[i+1][j][2] += dp[i][j][1] + dp[i][j][2] * 25; } } mint ans = 0; rep(i, n+1) { // cerr << i << " "; rep(j, 3) { ans += dp[n][i][j] * i; // cerr << dp[n][i][j].val() << " "; } cerr << endl; } cout << ans.val() << endl; }