20240306 tsreaper's submission (#125)

daily_problems/2024/03/0306/personal_submission/cf1194d_tsreaper.cpp

@@ -0,0 +1,20 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+void solve() {
+    int n, K; scanf("%d%d", &n, &K);
+    if (K % 3) {
+        if (n % 3) printf("Alice\n");
+        else printf("Bob\n");
+    } else {
+        n %= K + 1;
+        if (n % 3 || n == K) printf("Alice\n");
+        else printf("Bob\n");
+    }
+}
+
+int main() {
+    int tcase; scanf("%d", &tcase);
+    while (tcase--) solve();
+    return 0;
+}

daily_problems/2024/03/0306/personal_submission/cf621e_tsreaper.cpp

@@ -0,0 +1,52 @@
+#include <bits/stdc++.h>
+#define MOD ((int) 1e9 + 7)
+using namespace std;
+
+int n, m, G, X, cnt[10];
+
+struct Matrix {
+    int n, m;
+    long long V[100][100];
+
+    Matrix(int n, int m): n(n), m(m) {
+        for (int i = 0; i < n; i++) for (int j = 0; j < m; j++) V[i][j] = 0;
+    }
+
+    Matrix operator*(const Matrix &A) const {
+        Matrix B(n, A.m);
+        for (int i = 0; i < n; i++) for (int j = 0; j < A.m; j++) for (int k = 0; k < m; k++)
+            B.V[i][j] = (B.V[i][j] + V[i][k] * A.V[k][j]) % MOD;
+        return B;
+    }
+};
+
+Matrix power(Matrix &A, long long b) {
+    Matrix Y(A.n, A.n);
+    for (int i = 0; i < Y.n; i++) Y.V[i][i] = 1;
+    for (; b; b >>= 1) {
+        if (b & 1) Y = Y * A;
+        A = A * A;
+    }
+    return Y;
+}
+
+int main() {
+    scanf("%d%d%d%d", &n, &m, &G, &X);
+    for (int i = 1; i <= n; i++) {
+        int x; scanf("%d", &x);
+        cnt[x]++;
+    }
+
+    Matrix K(X, X);
+    for (int i = 0; i < X; i++) for (int j = 1; j <= 9; j++) {
+        int ii = (i * 10 + j) % X;
+        K.V[i][ii] = (K.V[i][ii] + cnt[j]) % MOD;
+    }
+    K = power(K, m);
+
+    Matrix A(1, X);
+    A.V[0][0] = 1;
+    A = A * K;
+    printf("%lld\n", A.V[0][G]);
+    return 0;
+}

records/202403.csv

@@ -1,7 +1,7 @@
 Name, Days with Submissions, Total Submissions
 Yawn_Sean,4,8
 Arrogant_sword,4,5
-TsReaper,4,8
+TsReaper,5,10
 retyrn,4,6
 ncf,4,4
 hum,4,8