```cpp
#include<cstdio>
#include<cmath>
#include<cstring>
#include<algorithm>
using namespace std;
typedef long long ll;
const int maxn=403;
const int inf=0x3f3f3f3f;
#define REP(i,x,y) for(register int i=x;i<=y;i++)
inline char getc()
{
static char buf[1<<14],*p1=buf,*p2=buf;
return (p1==p2)&&(p2=(p1=buf)+fread(buf,1,1<<14,stdin),p1==p2)?EOF:*p1++;
}
inline ll read(){
int data=0,w=1;
char ch=0;
while(ch!='-'&&(ch<'0'||ch>'9'))ch=getchar();
if(ch=='-') w=-1,ch=getchar();
while(ch>='0'&&ch<='9') data=data*10+ch-'0',ch=getchar();
return data*w;
}
int s[maxn],e[maxn][maxn],sum[maxn][maxn];
int main()
{
int n,m,t,k;
n=read(),m=read(),k=read();
t=min(n,m);
REP(i,1,n)
REP(j,1,m)
{
e[i][j]=read();
sum[i][j]+=sum[i][j-1]+s[i-1][j]-s[i-1][j-1]+e[i][j];
}
}
```
by Explorer_CYC @ 2018-03-23 14:28:39
没事加什么register
by xiangling @ 2018-11-01 20:21:02