HDU 5095 Linearization of the kernel functions in SVM (上海邀请赛水题)
2014-11-14 20:56
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看样例竟然懂了- -,给定系数写出来对应的方程即可。
需要注意的是正负1,还有就是什么时候到底要写+号什么时候不写。错了好多次才对。
感觉题目满满的恶意
需要注意的是正负1,还有就是什么时候到底要写+号什么时候不写。错了好多次才对。
感觉题目满满的恶意
#include<stdio.h> #include<string.h> #include<math.h> int main() { int T; scanf("%d",&T); while(T--) { int a,s=1; char w[20]="pqruvwxyz"; for(int i=0;i<9;i++)//前九位有变量的系数 { scanf("%d",&a); if(a!=0) { if(s==0) { if(a>0) printf("+");//s代表是否由有第一个字符输出,输出后就可以放心的输出+号了。 } else s=0; if(a==1) printf("%c",w[i]); else if(a==-1) printf("-%c",w[i]); else printf("%d%c",a,w[i]); } } scanf("%d",&a); if(a!=0)//常数项, { if(s==0)//必须要判断一下前面是否由输出,万一前九个都是0.... { if(a>0) printf("+"); } printf("%d\n",a); } else printf("\n"); } return 0; }
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