/* PKU 2017 by Dev-C++ 4.9.9.0 */ #include <stdio.h> #include <stdlib.h> int compute(int n) { int start,stop,v; int tot; start = 0; tot = 0; while(n--) { scanf(" %d",&v); scanf(" %d",&stop); tot += v * ( stop - start ); start = stop; } return tot; } int main(int argc, char *argv[]) { int n; int tot; scanf(" %d",&n); while(-1 != n) { tot = compute(n); printf("%d miles\n",tot); scanf(" %d",&n); } /* system("PAUSE"); */ return 0; }
本文地址：http://com.8s8s.com/it/it25537.htm