HNUOJ13302和13308贪心枚举有俩种情况的想办法直接枚举俩种情况每次枚举比较值
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13302:
#include<algorithm>#include<iostream>#include<limits.h>#include<stdlib.h>#include<string.h>#include<complex>#include<cstring>#include<iomanip>#include<stdio.h>#include<bitset>#include<cctype>#include<math.h>#include<string>#include<time.h>#include<vector>#include<cmath>#include<queue>#include<stack>#include<list>#include<map>#include<set>#define LL long longusing namespace std;const LL mod = 1e9 + 7;const double PI = acos(-1.0);const double E = exp(1.0);const int M = 1e6 + 5;string s;int dis[M];int main(){ LL a, b; while( cin >> a >> b ){ cin >> s; b = a - b; int len = s.size(); int sum = 0; memset(dis, 0, sizeof(dis)); for(int i = 0; i < len; ++i){ if(s[i] == 'B'){ sum++; dis[sum] = i + 1; } } if(sum == 0){ puts("0"); continue; } LL mn = 1e11; LL ans; for(int i = 0; i <= sum; ++i){ ans = (LL)(i * a); for(int j = 1; j <= sum - i; j++){ if(dis[j] > j + i) ans += (LL)(b * (dis[j] - j - i)); } mn = min(mn, ans); } cout << mn << endl; } return 0;}13308:
#include<algorithm>#include<iostream>#include<limits.h>#include<stdlib.h>#include<string.h>#include<complex>#include<cstring>#include<iomanip>#include<stdio.h>#include<bitset>#include<cctype>#include<math.h>#include<string>#include<time.h>#include<vector>#include<cmath>#include<queue>#include<stack>#include<list>#include<map>#include<set>#define LL long longusing namespace std;const LL mod = 1e9 + 7;const double PI = acos(-1.0);const double E = exp(1.0);const int M = 1e3 + 5;int a[M];int main(){ int n; while( cin >> n ){ for(int i = 0; i < n; ++i) cin >> a[i]; sort(a, a + n); int mn = 1e9; int ans; for(int i = 0; i <= n / 2; ++i){ ans = 0; for(int j = 0; j < i; ++j){ ans += 24 - a[n - j - 1] + a[j]; } for(int j = i; j < n - i; j += 2){ ans += a[j + 1] - a[j]; } mn = min(mn, ans); } cout << mn << endl; } return 0;}
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- HNUOJ13302和13308贪心枚举有俩种情况的想办法直接枚举俩种情况每次枚举比较值
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