#include<stdio.h>
int n,m,a[1000000]={0},b[151][100001]={0};
int sum[151][100001]={0};
void f1(void){
int i,sum=0,s=0,t=0,ans=3000000;
for(i=0;i<m;i++){
scanf("%d",&a[i]);
sum += a[i];
}
for(i=0;i<m;i++){
s += 1 - 2*a[i];
if(ans > sum+s-t) ans = sum+s-t;
if(t<s) t=s;
}
printf("%d\n",ans);
return;
}
void f2(void){
int i,j,k,s=0,t=0,ans=2147483647;
for(i=1;i<=n;i++){
for(j=1;j<=m;j++){
scanf("%d",&b[i][j]);
sum[i][j] = b[i][j] + sum[i-1][j] + sum[i][j-1] - sum[i-1][j-1];
}
}
for(i=1;i<=n;i++){
for(j=i;j<=n;j++){
s=t=0;
for(k=1;k<=m;k++){
s += (j-i+1) - 2 * (sum[j][k] - sum[i-1][k] - sum[j][k-1] + sum[i-1][k-1]);
if(ans > sum[n][m] + s-t) ans = sum[n][m] + s-t;
if(t<s) t = s;
}
}
}
printf("%d\n",ans);
return;
}
int main()
{
scanf("%d%d",&n,&m);
if(n==1) f1();
else f2();
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
122964 KB |
Output is correct |
2 |
Correct |
0 ms |
122964 KB |
Output is correct |
3 |
Correct |
0 ms |
122964 KB |
Output is correct |
4 |
Correct |
0 ms |
122964 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
122964 KB |
Output is correct |
2 |
Correct |
0 ms |
122964 KB |
Output is correct |
3 |
Correct |
0 ms |
122964 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
116 ms |
122964 KB |
Output is correct |
2 |
Correct |
100 ms |
122964 KB |
Output is correct |
3 |
Correct |
116 ms |
122964 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
24 ms |
122964 KB |
Output is correct |
2 |
Correct |
24 ms |
122964 KB |
Output is correct |
3 |
Correct |
20 ms |
122964 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
122964 KB |
Output is correct |
2 |
Correct |
4 ms |
122964 KB |
Output is correct |
3 |
Correct |
8 ms |
122964 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
264 ms |
122964 KB |
Output is correct |
2 |
Correct |
264 ms |
122964 KB |
Output is correct |
3 |
Correct |
256 ms |
122964 KB |
Output is correct |