1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | /**************************************** @_@ Cat Got Bored *_* #_# *****************************************/ #include <bits/stdc++.h> #define loop(i,s,e) for(int i = s;i<=e;i++) //including end point #define pb(a) push_back(a) #define sqr(x) ((x)*(x)) #define CIN ios_base::sync_with_stdio(0); cin.tie(0); #define ll long long #define ull unsigned long long #define SZ(a) int(a.size()) #define read() freopen("input.txt", "r", stdin) #define write() freopen("output.txt", "w", stdout) #define ms(a,b) memset(a, b, sizeof(a)) #define all(v) v.begin(), v.end() #define PI acos(-1.0) #define pf printf #define sfi(a) scanf("%d",&a); #define sfii(a,b) scanf("%d %d",&a,&b); #define sfl(a) scanf("%lld",&a); #define sfll(a,b) scanf("%lld %lld",&a,&b); #define sful(a) scanf("%llu",&a); #define sfulul(a,b) scanf("%llu %llu",&a,&b); #define sful2(a,b) scanf("%llu %llu",&a,&b); // A little different #define sfc(a) scanf("%c",&a); #define sfs(a) scanf("%s",a); #define mp make_pair #define paii pair<int, int> #define padd pair<dd, dd> #define pall pair<ll, ll> #define fs first #define sc second #define CASE(t) printf("Case %d: ",++t) // t initialized 0 #define cCASE(t) cout<<"Case "<<++t<<": "; #define INF 1000000000 //10e9 #define EPS 1e-9 #define flc fflush(stdout); //For interactive programs , flush while using pf (that's why __c ) using namespace std; /* IDEA: Simply add all line distance . Then , time = distance / speed */ int main() { int n,k; sfii(n,k); int lastX,lastY; int curX,curY; sfii(lastX,lastY); double dist_lines = 0.00000000f; loop(i,1,n-1) { sfii(curX,curY); double diffX = (curX - lastX)*1.0000000; double diffY = (curY - lastY)*1.0000000; dist_lines+=hypot(diffX,diffY); lastX = curX; lastY = curY; } dist_lines*=(k*1.00000000); double time = (dist_lines/50.00000000000); pf("%.9lf\n",time); return 0; } |
বুধবার, ১৫ জুন, ২০১৬
EASY CF 127 A
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