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82 lines
1.2 KiB
C
82 lines
1.2 KiB
C
#include <stdio.h>
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#include <string.h>
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int main() {
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char a[1001] = "";
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char b[1001] = "";
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char res[1002] = "";
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char null = 0;
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int len, len_;
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int i, j;
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char cf = 0;
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scanf("%s", a);
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scanf("%s", b);
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j = 0;
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if (a[0] == '0')
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null = 1;
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if (null) {
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for (i = 0; (i <= (int)strlen(a)) && (a[i] != '\0'); ++i) {
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if (!null || a[i] != '0') {
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res[j] = a[i];
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++j;
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null = 0;
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}
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}
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strcpy(a, res);
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}
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if (null) {
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a[0] = '0';
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a[1] = '\0';
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}
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null = 0;
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j = 0;
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if (b[0] == '0')
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null = 1;
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if (null) {
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for (i = 0; (i <= (int)strlen(b)) && (b[i] != '\0'); ++i) {
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if (!null || b[i] != '0') {
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res[j] = b[i];
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++j;
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null = 0;
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}
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}
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strcpy(b, res);
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}
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if (null) {
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b[0] = '0';
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b[1] = '\0';
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}
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if (strlen(a) < strlen(b)) {
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strcpy(res, a);
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strcpy(a, b);
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strcpy(b, res);
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}
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len = strlen(a);
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len_ = strlen(b);
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strcpy(res, b);
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for (i = 0; i < len-len_; ++i) {
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b[i] = '0';
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}
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for (i = 0; i < len_+1; ++i) {
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b[len-i] = res[len_-i];
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}
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for (i = len-1; i >= 0; --i) {
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res[i] = '0' + (a[i] + b[i] - 2 * '0' + cf) % 2;
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cf = (int)((a[i] + b[i] - 2 * '0' + cf) / 2);
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}
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if (cf) {
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putchar('1');
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printf("%s", res);
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return 0;
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}
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printf("%s", res);
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return 0;
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}
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