1002. A+B for Polynomials (25)
2015-10-13 21:12
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1002. A+B for Polynomials (25)
时间限制400 ms
内存限制
65536 kB
代码长度限制
16000 B
判题程序
Standard
作者
CHEN, Yue
This time, you are supposed to find A+B where A and B are two polynomials.
Input
Each input file contains one test case. Each case occupies 2 lines, and each line contains the information of a polynomial: K N1 aN1 N2 aN2 ... NK aNK, where
K is the number of nonzero terms in the polynomial, Ni and aNi (i=1, 2, ..., K) are the exponents and coefficients, respectively. It is given that 1 <= K <= 10,0 <= NK < ... < N2 < N1 <=1000.
Output
For each test case you should output the sum of A and B in one line, with the same format as the input. Notice that there must be NO extra space at the end of each line. Please be accurate to 1 decimal place.
Sample Input
2 1 2.4 0 3.2 2 2 1.5 1 0.5
Sample Output
3 2 1.5 1 2.9 0 3.2
第一次写,部分案例通过:
#include<stdio.h> int main(){ int k,n; double a; int i; while(scanf("%d",&k)!=EOF){ double arr[1001]; int num = 0; for(i=0;i<1001;i++){ arr[i] = 0; } for(i=0;i<k;i++){ scanf("%d %lf",&n,&a); arr = arr +a; num++; } scanf("%d",&k); for(i=0;i<k;i++){ scanf("%d %lf",&n,&a); if(arr ==0) num++; arr = arr +a; } printf("%d",num); for(i=1000;i>=0;i--){ if(arr[i]!=0) printf(" %d %.1lf",i,arr[i]); } printf("\n"); } return 0; }
修改如下,num值单独计算,然后空间开辟稍大,通过了:
#include<stdio.h>
int main(){
int k,n;
double a;
int i;
while(scanf("%d",&k)!=EOF){
double arr[1004];
int num = 0;
for(i=0;i<1004;i++){
arr[i] = 0;
}
for(i=0;i<k;i++){
scanf("%d %lf",&n,&a);
arr
= arr
+a;
}
scanf("%d",&k);
for(i=0;i<k;i++){
scanf("%d %lf",&n,&a);
arr
= arr
+a;
}
for(i=1000;i>=0;i--){
if(arr[i]!=0)
num++;
}
printf("%d",num);
for(i=1000;i>=0;i--){
if(arr[i]!=0)
printf(" %d %.1lf",i,arr[i]);
}
printf("\n");
}
return 0;
}
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