听取WA声一片

#include<iostream>
using namespace std;
int main(){
	int f,s,t,miao=0;
	char a;
	cin>>f>>s>>t>>a;
	if(a=='P')
		f+=12;
	miao+=t;
	miao+=s*60;
	miao+=s*3600;
	cout<<miao;
}