24 lines
448 B
C++
24 lines
448 B
C++
#include<iostream>
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#include<fstream>
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using namespace std;
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ifstream fin("order.in");
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ofstream fout("order.out");
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int main() {
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long long anss,ansf;
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int s,f;
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fin>>anss>>ansf;
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while (fin>>s>>f)
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{
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ansf-=f;
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if(ansf<0){
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anss--;
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ansf+=60;
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}
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if(ansf>59){
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anss++;
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ansf-=60;
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}
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anss-=s;
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}
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fout<<anss<<":"<<ansf;
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} |