代码

#include <stdio.h>
#include <ctype.h>
inline int read() {
    static bool f;
    static char c;
    static int x;
    while (!isdigit(c = getchar()) && c != '-')
        ;
    x = (f = c == '-') ? 0 : c ^ 48;
    while (isdigit(c = getchar()))
        x = (x << 3) + (x << 1) + (c ^ 48);
    return f ? ~x + 1 : x;
}

inline void output(int x) {
    static char buf[30], *tail = buf;
    if (x == 0)
        putchar('0');
    else {
        if (x < 0) x = ~x + 1, putchar('-');
        for (; x; x /= 10) *++tail = (x % 10) ^ 48;
        for (; tail != buf; --tail) putchar(*tail);
    }
    putchar('\n');
}

int main() {
	register int n = read();
	while (n--) {
	    register int a = read();
	    register int b = read();
            output(a + b);
	}
	return 0;
}

评测结果