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用 费马大定理 失败,这里的数据有重,一个人可以两次听到一棵树#include <stdio.h> #include <iostream> using namespace std; int main() { // freopen("in.txt","r",stdin); // freopen("out.txt","w",stdout); int p,n; int s[100],i,a,b,tmp,ans; scanf("%d%d",&p,&n); for(i=1;i<=p;i++) s[i]=0; while(scanf("%d%d",&a,&b)!=EOF){ s[a] += b*b*b; //如果数据不出现重复,把多维映射到一维就没有问题 } sort(s+1,s+p); ans=0; for(i=1,tmp=-1;i<=p;i++){ if(s[i]>tmp){ tmp=s[i]; ans++; } } printf("%d\n",ans); return 1; } Followed by:
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