function main(arg) {
    if(arg=="SUN"){console.log(7)};
    if(arg=="MON"){console.log(6)};
    if(arg=="TUE"){console.log(5)};
    if(arg=="WED"){console.log(4)};
    if(arg=="THU"){console.log(3)};
    if(arg=="FRI"){console.log(2)};
    if(arg=="SAT"){console.log(1)};
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));