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为什么用memset就wa了??

Posted by verywater at 2010-07-28 09:44:37 on Problem 1125
我程序里用了
for(i=1;i<=n;i++)
{
    for(j=1;j<=n;j++)
        g[i][j]=inf;
}初始化,就ac了。
但改为memset(g ,inf ,sizeof(g))就wa,为什么??

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