{"raw_statement":[{"iden":"problem statement","content":"We have a sandglass that runs for $X$ seconds. The sand drops from the upper bulb at a rate of $1$ gram per second. That is, the upper bulb initially contains $X$ grams of sand.\nHow many grams of sand will the upper bulb contains after $t$ seconds?"},{"iden":"constraints","content":"*   $1≤X≤10^9$\n*   $1≤t≤10^9$\n*   $X$ and $t$ are integers."},{"iden":"input","content":"The input is given from Standard Input in the following format:\n\n$X$ $t$"},{"iden":"sample input 1","content":"100 17"},{"iden":"sample output 1","content":"83\n\n$17$ out of the initial $100$ grams of sand will be consumed, resulting in $83$ grams."},{"iden":"sample input 2","content":"48 58"},{"iden":"sample output 2","content":"0\n\nAll $48$ grams of sand will be gone, resulting in $0$ grams."},{"iden":"sample input 3","content":"1000000000 1000000000"},{"iden":"sample output 3","content":"0"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}