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Cod sursa(job #138252)
#include<fstream.h>
int main()
{
fstream f("flip.in",ios::in);
fstream g("flip.out",ios::out);
int n,m,i,j,schimbare=0;
long v[16][16];
long long suma,sc,sl;
f>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
f>>v[i][j];
sl=0;sc=0;
do
{
for(i=1;i<=n;i++)
{
for(j=1;j<=m;j++)
sl+=v[i][j];
if(sl<0)
{
for(j=1;j<=m;j++)
v[i][j]*=(-1);
schimbare=1;
sl=0;
}
for(i=1;i<=n;i++)
{
for(j=1;j<=m;j++)
sc+=v[j][i]
if(sc<0)
{
for(j=1;j<=n;j++)
v[j][i]*=(-1);
schimbare=1;
}
}
}
while(schimbare)
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
suma+=v[i][j];
g<<suma;
return 0;
}