同余定理的运用:
(a+b)%c=(a%c+b%c)%c;
(a*b)%c=(a%c*b%c)%c;
CODE:#include <stdio.h>
#include <stdlib.h>
#include <string.h>
using namespace std;
const int maxn = 1001;
char s[maxn];
int main()
{
int m;
while(~scanf("%s%d", s, &m))
{
int l = strlen(s);
int ans = 0;
for(int i = 0 ; i < l ; i++)
{
ans = (ans*10%m + (s[i]-'0')%m)%m;
}
printf("%d\n", ans);
}
return 0;
#include <stdlib.h>
#include <string.h>
using namespace std;
const int maxn = 1001;
char s[maxn];
int main()
{
int m;
while(~scanf("%s%d", s, &m))
{
int l = strlen(s);
int ans = 0;
for(int i = 0 ; i < l ; i++)
{
ans = (ans*10%m + (s[i]-'0')%m)%m;
}
printf("%d\n", ans);
}
return 0;
}