9 条题解
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-7
#include <bits/stdc++.h> #include <windows.h> #define ll long long #define mod 1000000007 #define maxn 510 inline int read() { int X = 0; bool f = false; char ch = getchar(); while (ch > '9' || ch < '0') {f |= ch == '-'; ch = getchar();} while (ch <= '9' && ch >= '0') {X = (X << 3) + (X << 1) + (ch ^ 48); ch = getchar();} return f ? -X : X; } inline void write(ll X) { if (X == 0) {putchar('0'); return;} if (X < 0) {/*putchar('-'); X = -X;*/ X += mod;} short cnt = 0; char ch[31]; while (X) {ch[++cnt] = (X % 10) ^ 48; X /= 10;} while (cnt) putchar(ch[cnt--]); return; } int n, p, m; ll A[maxn][maxn], B[maxn][maxn], ANS[maxn][maxn]; int main() { n = read(); p = read(); m = read(); for (int i = 1; i <= n; ++i) for (int j = 1; j <= p; ++j) A[i][j] = read(); for (int i = 1; i <= p; ++i) for (int j = 1; j <= m; ++j) B[i][j] = read(); for (int i = 1; i <= n; ++i) { for (int j = 1; j <= m; ++j) { for (int k = 1; k <= p; ++k) { ANS[i][j] = (ANS[i][j] + (A[i][k] * B[k][j] % mod)) % mod; } write(ANS[i][j]); putchar(' '); } putchar('\n'); } system("pause"); return 0; }
信息
- ID
- 60
- 时间
- 2000ms
- 内存
- 256MiB
- 难度
- 3
- 标签
- 递交数
- 781
- 已通过
- 197
- 上传者