func_code_string: #include <cstdio>   #include <algorithm>   using namespace std;   #define ADD(x) ((x>=mod)?x-mod:x)   const int mod=1e9+7;   int n,c[110],b[110],sum[110],sum1[110],sumc[110],dp[110][10010],ans,Min,T,x;   int main()   {    scanf( %d ,&n);    for (int i=1;i<=n;i++) scanf( %d ,&c[i]),sumc[i]=sumc[i-1]+c[i];    for (int i=1;i<n;i++) scanf( %d ,&b[i]),sum[i]=sum[i-1]+b[i];    for (int i=1;i<=n;i++) sum1[i]=sum1[i-1]+sum[i-1];    scanf( %d%d ,&T,&x);    dp[0][0]=1;    for (int i=1;i<=n;i++)     for (int j=x*i+sum1[i];j<=sumc[i];j++)      for (int k=min(j,c[i]);k>=0;k--)       dp[i][j]=ADD(dp[i][j]+dp[i-1][j-k]);    for (int i=0;i<=sumc[n];i++) ans=ADD(ans+dp[n][i]);    printf( %d n ,ans);    return 0;   }   