对比下面两段代码，下列说法错误的是（）。

using namespace std;

const int maxn = 1e4 + 5;

const int maxW = 1e7 + 5;

int n, W, w[maxn], v[maxn];

long long f[maxW];

int main() {

cin >> W >> n;

for (int i = 1; i <= n; i++) cin >> w[i] >> v[i];

for (int i = 1; i <= n; i++)

for (int l = w[i]; l <= W; l++)

if (f[l - w[i]] + v[i] > f[l]) f[l] = f[l - w[i]] + v[i];

cout << f[W];

return 0;

}

using namespace std;

const int maxn = 13010;

int n, W, w[maxn], v[maxn], f[maxn];

int main() {

cin >> n >> W;

for (int i = 1; i <= n; i++) cin >> w[i] >> v[i];

for (int i = 1; i <= n; i++)

for (int l = W; l >= w[i]; l--)

if (f[l - w[i]] + v[i] > f[l]) f[l] = f[l - w[i]] + v[i];

cout << f[W];

return 0;

}