写在前面
之前写过关于牛客网的输入输出的题目, 但是是用C++的标准IO写的, 虽然方便, 但是据说速度会很慢, 这里还是再用C重写一遍, 主要用到了scanf和printf.
地址: 牛客竞赛_ACM/NOI/CSP/CCPC/ICPC算法编程高难度练习赛_牛客竞赛OJ (nowcoder.com);
不列出题目了, 直接看链接即可.
11道题的题解
1
#include <cstdio>
using namespace std;
int main(void) {
int a, b;
while (~scanf("%d %d", &a, &b)) printf("%d\n", a + b);
return 0;
}
2
#include <cstdio>
using namespace std;
int main(void) {
int a, b, n;
scanf("%d", &n);
while (n--) scanf("%d %d", &a, &b), printf("%d\n", a + b);
return 0;
}
3
#include <cstdio>
using namespace std;
int main(void) {
int a, b;
while (~scanf("%d %d", &a, &b)) {
if (!a || !b) break;
printf("%d\n", a + b);
}
return 0;
}
4
#include <cstdio>
using namespace std;
int main(void) {
int a, n, sum;
while (~scanf("%d", &n)) {
if (!n) break;
sum = 0;
while (n--) scanf("%d", &a), sum += a;
printf("%d\n", sum);
}
return 0;
}
5
#include <cstdio>
using namespace std;
int main(void) {
int a, m, n, sum;
scanf("%d", &m);
while (m--) {
scanf("%d", &n);
sum = 0;
while (n--) scanf("%d", &a), sum += a;
printf("%d\n", sum);
}
return 0;
}
6
#include <cstdio>
using namespace std;
int main(void) {
int a, n, sum;
while (~scanf("%d", &n)) {
sum = 0;
while (n--) scanf("%d", &a), sum += a;
printf("%d\n", sum);
}
return 0;
}
7
#include <cstdio>
using namespace std;
int main(void) {
int a, sum{};
while (~scanf("%d", &a)) {
sum += a;
if (getchar() == '\n') {
printf("%d\n", sum);
sum = 0;
}
}
return 0;
}
8
#include <iostream>
#include <cstdio>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
int main(void) {
int n;
char tmp[1000]; // 必须给出数据范围
scanf("%d", &n);
vector<string> ans(n);
while (n--) {
scanf("%s", tmp);
ans[n] = string(tmp);
}
sort(ans.begin(), ans.end());
for (auto s : ans) cout << s << " ";
return 0;
}
9
#include <iostream>
#include <cstdio>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
int main(void) {
int n;
char tmp[1000]; // 必须给出数据范围
vector<string> ans;
while (~scanf("%s", tmp)) {
ans.emplace_back(string(tmp));
if (getchar() == '\n') {
sort(ans.begin(), ans.end());
for (auto s : ans) cout << s << " ";
putchar('\n');
ans.clear();
}
}
return 0;
}
10
写的有点复杂了, 感觉可以用scanf的格式化读取直接读.
#include <iostream>
#include <cstdio>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
int main(void) {
int n;
char tmp[1000]; // 必须给出数据范围
vector<string> ans;
while (~scanf("%s", tmp)) {
string stmp = string(tmp), ss{};
for (int i{}; i < stmp.size(); ++i) {
if (isalpha(stmp[i]))
ss += stmp[i];
else
ans.emplace_back(ss), ss.clear();
}
ans.emplace_back(ss);
sort(ans.begin(), ans.end());
for (int i{}; i < ans.size(); ++i)
cout << ans[i] << (i == ans.size() - 1 ? "\n" : ",");
ans.clear();
}
return 0;
}
纯scanf版: 用到了scanf的高级用法
#include <iostream>
#include <cstdio>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
int main(void) {
int n;
char tmp[100]; // 必须给出数据范围
vector<string> ans;
// %[^,]遇到逗号停止
while (~scanf("%[^,\n]", tmp)) {
ans.emplace_back(string(tmp));
if (getchar() == '\n') {
sort(ans.begin(), ans.end());
for (auto it = ans.begin(); it != ans.end(); ++it)
cout << *it << (it == ans.end() - 1 ? "\n" : ",");
ans.clear();
}
}
return 0;
}
11
#include <cstdio>
using namespace std;
int main(void) {
long a, b;
while (~scanf("%ld%ld", &a, &b)) printf("%ld\n", a + b);
return 0;
}