acdream(18) Integration of Polynomial
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简单定积分,注意求gcd时要保证两个数都非负不然会出问题。。
代码:
#include <iostream>#include <cstdio>#include <cstring>using namespace std;int gcd(int a,int b){ return b?gcd(b,a%b):a;}int a[1010];int e[1010];int c[1010];void solve(int n){ for(int i=1;i<=n;i++){ c[i]=e[i]+1; }}int main(){ int n; while(~scanf("%d",&n)){ for(int i=1;i<=n;i++){ scanf("%d%d",&a[i],&e[i]); } solve(n); for(int i=1;i<=n;i++){ int k=a[i]; a[i]=a[i]>0?a[i]:-a[i]; int t=gcd(a[i],c[i]); if(k<0) printf("-"); if(a[i]%c[i]==0){ printf("%d ",a[i]/c[i]); } else{ a[i]/=t; c[i]/=t; printf("%d/%d ",a[i],c[i]); } printf("%d",e[i]+1); if(i==n) printf("\n"); else printf(" "); } } return 0;}
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