B1041 考试座位号(15)
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解题要点:
- 使用结构体保存准考证号,考试座位号
- 试机座位号作考生数组下标
- 通过试机座位号获取考生号,座位号
- 考生号使用long long存放
//课本AC代码
#include <cstdio>
const int maxn = 1010;
struct Student
long long id;
int examSeat;
testSeat[maxn];
int main()
int n, m, seat, examSeat;
long long id;
scanf("%d", &n);
for(int i = 0; i < n; i++)
scanf("%lld %d %d", &id, &seat, &examSeat);
testSeat[seat].id = id;
testSeat[seat].examSeat = examSeat;
scanf("%d", &m);
for(int i = 0; i < m; i++)
scanf("%d", &seat);
printf("%lld %d\n", testSeat[seat].id, testSeat[seat].examSeat);
return 0;
自己的WA代码
#include <cstdio>
const int max_n = 1010;
struct Stu
long long no; //准考证号
int seat_num;
int test_num;
stu[max_n];
int main()
#ifdef ONLINE_JUDGE
#else
freopen("1.txt", "r", stdin);
#endif // ONLINE_JUDGE
long long id;
int seat, examSeat;
int testSeat = 0;
int n1 = 0, n2 = 0;
scanf("%d", &n1); //输入n个考生信息
for(int i = 0; i < n1; i++)
scanf("%lld %d %d", &id, &seat, &examSeat);
stu[i].no = id;
stu[i].seat_num = seat;
stu[i].test_num = examSeat;
scanf("%d", &n2); //输入n个查询信息
/*for(int i = 0; i < n1; i++)
printf("%lld %d %d\n ", stu[i].no, stu[i].seat_num, stu[i].test_num);
for(int i = 0; i < n2; i++)
*/
//误人子弟写法, 复杂度变高了不止, 还wa
for(int i = 0; i < n2; i++)
scanf("%d", &testSeat);
for(int j = 0; j < n1; j++)
if(testSeat == stu[j].test_num)
printf("%lld %d\n", stu[i].no, stu[i].test_num);
return 0;
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