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为什么一个AC一个WA啊?!!!先放AC的~~ #include<cstdio> #include<algorithm> struct t{ int l; int m; }a[10000]; int cmp(const void*a,const void*b) { if(((t*)a)->l-((t*)b)->l)return ((t*)a)->l-((t*)b)->l; else return ((t*)a)->m-((t*)b)->m; } int n,max[10000],x,i,j; int main() { while(scanf("%d",&n)&&n){ max[0]=1; for(i=0;i<n;i++)scanf("%d%d",&a[i].l,&a[i].m); qsort(a,n,sizeof(t),cmp); for(i=1;i<n;i++){ x=0; for(j=0;j<i;j++)if(a[i].m>=a[j].m&&x<max[j])x=max[j]; max[i]=x+1; } x=0; for(i=0;i<n;i++)if(max[i]>x)x=max[i]; printf("%d\n",x); } printf("*\n"); } 再放哇的~~ #include<cstdio> #include<algorithm> struct t{ int l; int m; }a[10000]; int cmp(const void*a,const void*b) { return ((t*)a)->l-((t*)b)->l; } int n,max[10000],x,i,j; int main() { while(scanf("%d",&n)&&n){ max[0]=1; for(i=0;i<n;i++)scanf("%d%d",&a[i].l,&a[i].m); qsort(a,n,sizeof(t),cmp); for(i=1;i<n;i++){ x=0; for(j=0;j<i;j++)if(a[i].m>=a[j].m&&x<max[j])x=max[j]; max[i]=x+1; } x=0; for(i=0;i<n;i++)if(max[i]>x)x=max[i]; printf("%d\n",x); } printf("*\n"); } 只是排序函数上改了下,应该一样才对啊?为神马呢?求各位大大解释~~ —。— 谢谢了哦! Followed by:
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