#include<stdio.h>
#include<algorithm>
using namespace std;
#define N_ 200010
long long po[N_ * 2], D1[N_], S[N_], po2[N_], D2[N_], Mod=19980305, Res, R1;
char p[N_];
void Do(long long Sum, int Len){
Res = (Res + D2[Len] + Sum * Sum % Mod * (po2[Len] - 1) % Mod + (Sum * S[Len] * 2) % Mod - Sum * D1[Len] * (8 + 3) % Mod + Mod) % Mod;
}
void Gap(){
int i, n = strlen(p);
Res = 0;
long long Sum = 0, tp;
for (i = 1; i < n; i++){
Res = (Res + D2[i] + D1[i] * D1[i+1] * 24) % Mod;
}
for (i = 0; i < n; i++){
Sum = (Sum + po[n - i - 1] * 3) % Mod;
if (p[i] == '3')continue;
Do(Sum, n - i - 1);
Res = (Res + Sum * 3 * D1[n - i - 1]) % Mod;
tp = (Sum + po[n - i - 1] * 2) % Mod;
Res = (Res + tp * 8 * D1[n - i - 1] + Sum * tp % Mod + D1[n - i - 1] * D1[n - i - 1] * 24) % Mod;
Sum = tp;
if (p[i] == '5')continue;
Do(Sum, n - i - 1);
Res = (Res + Sum * 3 * D1[n - i - 1]) % Mod;
tp = (Sum + po[n - i - 1] * 3) % Mod;
Res = (Res + tp * 8 * D1[n - i - 1] + Sum * tp % Mod + D1[n - i - 1] * D1[n - i - 1] * 24) % Mod;
Sum = tp;
}
}
int main()
{
int i, t = 0;
po[0] = po2[0] = 1;
for (i = 1; i < N_ * 2; i++)po[i] = po[i - 1] * 10 % Mod;
for (i = 1; i < N_; i++)po2[i] = po2[i - 1] * 3 % Mod;
for (i = 1; i < N_; i++)D1[i] = (D1[i - 1] + po[i - 1]) % Mod;
for (i = 1; i < N_; i++)S[i] = (S[i - 1] * 3 + po2[i - 1] * (3 + 5 + 8)*po[i - 1]) % Mod;
for (i = 1; i < N_; i++)D2[i] = (D2[i - 1] * 3 + ((3 + 5 + 8)*po[i - 1] * S[i - 1] * 2) % Mod - (D1[i - 1] * po[i - 1] * 48) % Mod + ((3 * 3 + 5 * 5 + 8 * 8)*(po2[i - 1] - 1) + 3 * 5 + 5 * 8) % Mod*po[2 * i - 2] % Mod + 2 * D1[i - 1] * D1[i - 1] * 8 * 3 % Mod + Mod) % Mod;
scanf("%s", p);
Gap();
R1 = Res;
scanf("%s", p);
Gap();
printf("%lld\n", (Res - R1 + Mod) % Mod);
}
Compilation message
birthday2.cpp: In function 'void Gap()':
birthday2.cpp:11:21: error: 'strlen' was not declared in this scope
birthday2.cpp: In function 'int main()':
birthday2.cpp:35:9: warning: unused variable 't' [-Wunused-variable]
birthday2.cpp:42:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
birthday2.cpp:45:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
