在做杭电1236题的过程中,与ac代码对比,
#include "iostream"
#include "stdio.h"
#include "algorithm"
#include <string.h>
using namespace std;
const int MAXN = 11;
const int MAX = 22;
int point[MAXN];
struct Student
{
char num[MAX];
int pro_num[MAXN];
int pnt ;
};
bool cmp(const Student &a,const Student &b)
{
if (a.pnt == b.pnt)
return strcmp(a.num,b.num) < 0 ? 1 : 0;
else return a.pnt > b.pnt;
}
int main()
{
int N, sum;
while (scanf("%d",&N) != EOF)
{
sum = 0;
if (N == 0) break;
int M, G;
scanf("%d%d",&M,&G);
int i;
int max;
for(i = 0; i < M; i++)
{
scanf("%d",&point[i]);
}
Student stu[1001];
for(i = 0; i < N; i ++)
{
scanf("%s",&stu[i].num);
stu[i].pnt = 0;
int slv, j;
scanf("%d",&slv);
for (j = 0; j < slv; j++)
{
scanf("%d",&stu[i].pro_num[j]);
stu[i].pnt = stu[i].pnt + point[stu[i].pro_num[j] - 1];
}
}
for (i = 0; i < N; i++)
{
if (stu[i].pnt >= G) sum++;
}
printf("%d\n",sum);
sort (stu,stu + N,cmp);
for (i = 0; i < sum; i++)
{
printf("%s %d\n", stu[i].num,stu[i].pnt);
}
}
system ("pause");
return 0;
}
发现ac代码多了一行
bool cmp(const Student &a,const Student &b)
{
if (a.pnt == b.pnt)
return strcmp(a.num,b.num) < 0 ? 1 : 0;
else return a.pnt > b.pnt;
}
想知道这几行代码在程序中起什么作用