提出 #45322549

---

ソースコード 拡げる

#include <bits/stdc++.h>
using namespace std; 
const int P = 1000000007, N = 402; 
inline void add(int &x, int t) { x += t; x -= x >= P ? P : 0; }

int n, c; 
int a[405], b[405]; 
int f[405][405]; // 前 i 个人分 j 个糖果
int pw[405][405]; 

int main(void) {
    scanf("%d%d", &n, &c); 
    for (int i = 1; i <= 400; ++i) {
        pw[i][0] = 1; 
        for (int j = 1; j <= 400; ++j) pw[i][j] = 1ll * pw[i][j - 1] * i % P; 
    }
    for (int i = 1; i <= 400; ++i) for (int j = 0; j <= 400; ++j) add(pw[i][j], pw[i - 1][j]); 
    for (int i = 1; i <= n; ++i) scanf("%d", a + i); 
    for (int i = 1; i <= n; ++i) scanf("%d", b + i); 
    f[0][0] = 1; 
    for (int i = 1; i <= n; ++i)
        for (int j = 0; j <= c; ++j)
            for (int k = 0; k <= j; ++k)
                add(f[i][j], 1ll * f[i - 1][j - k] * (pw[b[i]][k] - pw[a[i] - 1][k] + P) % P); 
    printf("%d\n", f[n][c]); 
    return 0; 
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int main()’:
Main.cpp:12:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   12 |     scanf("%d%d", &n, &c);
      |     ~~~~~^~~~~~~~~~~~~~~~
Main.cpp:18:39: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   18 |     for (int i = 1; i <= n; ++i) scanf("%d", a + i);
      |                                  ~~~~~^~~~~~~~~~~~~
Main.cpp:19:39: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   19 |     for (int i = 1; i <= n; ++i) scanf("%d", b + i);
      |                                  ~~~~~^~~~~~~~~~~~~

ジャッジ結果