小鱼的航程

include

using namespace std;
int main() {
int x, n,ans = 0;
scanf("%d%d", &x, &n);
for(int i = 1; i <= n; i++,x++){
if(x % 7 == 6 ||x % 7==0) continue;
ans += 250;
}
printf("%d\n", ans);
return 0;
}

反思：要多刷这一类的题型