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 %dn", 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 %dn ", 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 %dn", stu[i].no, stu[i].test_num);
}
}
}
return 0;
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