ACM模式输入输出总结

单组输入

数量固定

数量不固定

多组输入

多组数量固定-单组数量固定

A+B(2)

#include <iostream>

using namespace std;

int main() {
    int t;
    cin >> t;
    
    int a, b;
    while (t--) {
        cin >> a >> b;
        cout << a + b << endl;
    }
    return 0;
}

A+B(5)

#include <iostream>

using namespace std;

int main() {
    int t;
    cin >> t;
    
    while (t --) {
        int n;
        cin >> n;
        
        int x, sum = 0;
        while (n --) cin >> x, sum += x;
            
        cout << sum << endl;
    }
    
    return 0;
}

多组数量固定-单组数量不固定

多组数量不固定-单组数量固定

A+B(1)

#include <iostream>

using namespace std;

int main() {
    int a, b;
    while (cin >> a >> b) {
        cout << a + b << endl;
    }    
    return 0;
}

A+B(3)

#include <iostream>

using namespace std;

int main() {
    int a, b;
    while (cin >> a >> b, a || b) {
        cout << a + b << endl;    
    }
    return 0;
}

A+B(4)

#include <iostream>

using namespace std;

int main()
{
    int n;    
    while(cin >> n, n)
    {
        int x, sum = 0;

        while(n--) cin >> x, sum += x;
        cout << sum << endl;
    }

    return 0;
}

A+B(6)

#include <iostream>

using namespace std;

int main() {
    int n;
    while (cin >> n) {
        int sum = 0, x;
        
        while (n --) cin >> x, sum += x;
        cout << sum << endl;
    }
    
    return 0;
}

多组数量不固定-单组数量不固定

A+B(7)

#include <iostream>
#include <string>
#include <sstream>

using namespace std;

int main() {
    string s;
    while (getline(cin, s)) {
        stringstream line(s);
        int sum = 0, x;
        while (line >> x) sum += x;
        cout << sum << endl;
    }
    return 0;
}

字符串排序(2)

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <sstream>

using namespace std;

int main() {
    string s;
    while (getline(cin, s)) {
        stringstream line(s);
        
        vector<string> res;
        string x;
        
        while (line >> x) res.push_back(x);
        sort(res.begin(), res.end());
        
        for (auto &s: res) cout << s << " ";
        cout << endl;
    }
    return 0; 
}

字符串排序(3)

#include <iostream>
#include <string>
#include <vector>
#include <sstream>
#include <algorithm>

using namespace std;

int main() {
    string s;
    while (getline(cin, s)) {
        stringstream line(s);
        
        string x;
        vector<string> res;
        while (getline(line, x, ',')) res.push_back(x);
        sort(res.begin(), res.end());
        
        for (int i = 0; i < res.size(); i ++ ) {
            if (i == res.size() - 1) cout << res[i] << endl;
            else cout << res[i] << ",";
        }
    }
    return 0;
}