$\texttt{int}$ 可以过啊
by AC_CSP @ 2022-11-11 18:25:49
？
我全程int过了
```cpp
#include<iostream>
#include<cstdio>
#define rii register int i
#define rij register int j
using namespace std;
int place_sh[1000005],place_kc[1000005],n,m;
int time_sh,time_kc,cnt;
int main()
{
cin>>n>>m;
for(rii=1;i<=n;i++)
{
int speed,time;
cin>>speed>>time;
for(rij=1;j<=time;j++)
{
time_sh++;
place_sh[time_sh]=place_sh[time_sh-1]+speed;
}
}
for(rii=1;i<=m;i++)
{
int speed,time;
cin>>speed>>time;
for(rij=1;j<=time;j++)
{
time_kc++;
place_kc[time_kc]=place_kc[time_kc-1]+speed;
}
}
int min_time=min(time_kc,time_sh);
int bol=0;
for(rii=1;i<=min_time;i++)
{
if(place_sh[i]<place_kc[i])
{
if(bol==-1)
{
continue;
}
else
{
bol=-1;
cnt++;
}
}
if(place_sh[i]>place_kc[i])
{
if(bol==1)
{
continue;
}
else
{
bol=1;
cnt++;
}
}
}
if(cnt!=0)
{
cnt--;
}
cout<<cnt;
}
```
by ztz11 @ 2022-11-11 18:34:06
@[AC_CSP](/user/481527) 不知道，反正我把数据类型改为long long 就AC了
by 段落 @ 2022-11-12 12:48:11
@[段落](/user/392327)
```
s=l1-l2;
if(s*f<0)
{
cnt++;
f=s;
}
```
如果s=1e5,f=1e5相乘就爆int了，然后得一个负数。所以建议你s赋值时用l1<l2这样的布尔型，这样s只能为0或者1,就不会爆int了
by Chenyufeng040525 @ 2023-05-30 18:14:44
谢谢@[Chenyufeng040525](/user/929850)
by 段落 @ 2023-05-30 18:56:57