#include <cuda_runtime.h>
int main()
{
int n;
if (cudaGetDeviceCount(&n)!=cudaSuccess || n==0)
return 1;
bool found = false;
while (n--) {
cudaDeviceProp prop;
found |= cudaGetDeviceProperties(&prop, n)==cudaSuccess &&
prop.major>=7;
}
return !found;
}