剪贴板 nr0pn7eu - 洛谷保存站

```cpp
#include <bits/stdc++.h>

namespace IO {
    constexpr int BUFSIZE = 1 << 20;
    char ibuf[BUFSIZE], *is = ibuf, *it = ibuf, obuf[BUFSIZE];
    int cnt = 0;
    void flush() {
        fwrite(obuf, 1, cnt, stdout);
        cnt = 0;
    }
    inline char get() {
        if (is == it) it = (is = ibuf) + fread(ibuf, 1, BUFSIZE, stdin);
        return is == it ? EOF : *is++;
    }
    inline void put(char c) {
        obuf[cnt++] = c;
        if (cnt == BUFSIZE) flush();
    }
    struct AutoFlush {
        ~AutoFlush() { flush(); }
    } flusher;
    int read() {
        int c = get(), x = 0;
        while (!isdigit(c)) c = get();
        do x = (x << 1) + (x << 3) + (c & 15);
        while (isdigit(c = get()));
        return x;
    }
    template<typename Tp>
    void write(Tp x, char c = '\0') {
        static int top, wr[50];
        do wr[++top] = x % 10; while (x /= 10);
        while (top) put(wr[top--] | 48);
        if (c) put(c);
    }
}

using IO::read;
using IO::write;

/*
 * input: 1919810 114514
 * output: 2034324 1805296
 */
int main() {
    int a = read(), b = read();
    write(a + b, ' ');
    write(a - b, '\n');
    return 0;
}
```

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