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#include <bits/stdc++.h>
//#pragma GCC optimize("O3")
//#pragma GCC optimize("Ofast,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx")
//#pragma GCC target("avx,tune=native")
//float __attribute__((aligned(32)))
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef unsigned int uint;
int mysqrt(ll x){
int l = 0, r = 1e9 + 1;
while (r - l > 1){
int m = (l + r) / 2;
if (m * (ll)m <= x)
l = m;
else
r = m;
}
return l;
}
mt19937 rnd(1337);
mt19937_64 rndll(12365);
ll AR = 19, BR = 13, CR = 23, XR = 228, YR = 322, MODR = 1e9 + 993;
ll myrand(){
ll ZR = (XR * AR + YR * BR + CR) % MODR;
XR = YR;
YR = ZR;
return ZR;
}
const int Mod = 1e9 + 7;
int bpow(int x, int y){
if (y == 0)
return 1;
if (y == 1)
return x;
int ret = bpow(x, y >> 1);
ret = (ret * (ll)ret) % Mod;
if (y & 1)
ret = (ret * (ll)x) % Mod;
return ret;
}
int bdiv(int x, int y){
return (x * (ll)bpow(y, Mod - 2)) % Mod;
}
void setmin(int &x, int y){
x = min(x, y);
}
void setmax(int &x, int y){
x = max(x, y);
}
void setmin(ll &x, ll y){
x = min(x, y);
}
void setmax(ll &x, ll y){
x = max(x, y);
}
int gcd(int a, int b){
return a ? gcd(b % a, a) : b;
}
const ll llinf = 2e18 + 100;
const double eps = 1e-9;
const int maxn = 1e5 + 100, maxw = 1e6 + 100, inf = 2e9 + 100, sq = 300, mod = 1e9 + 7, LG = 21;
int n, m;
vector<vector<int> > a, col;
int main()
{
#ifdef ONPC
//ifstream cin("a.in");
//ofstream cout("a.out");
freopen("a.in", "r", stdin);
freopen("a.out", "w", stdout);
#else
//ifstream cin("gymnasts.in");
//ofstream cout("gymnasts.out");
//freopen("post.in", "r", stdin);
//freopen("post.out", "w", stdout);
#endif // ONPC
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int S = 0;
cin >> n >> m;
a.resize(n, vector<int>(m));
col.resize(n + 1, vector<int>(m));
for (int i = 0; i < n; i++)
for (int j = 0; j < m; j++)
cin >> a[i][j], S += a[i][j];
for (int i = 0; i < n; i++)
for (int j = 0; j < m; j++)
col[i + 1][j] = col[i][j] + a[i][j];
int ans = S;
for (int l = 0; l < n; l++)
for (int r = l; r < n; r++){
int val = 0, now = 0;
for (int i = 0; i < m; i++){
int o = col[r + 1][i] - col[l][i];
now += r - l + 1 - 2 * o;
val = max(val, now);
ans = min(ans, S + now - val);
}
}
cout << ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
284 KB |
Output is correct |
| 2 |
Correct |
2 ms |
396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
468 KB |
Output is correct |
| 4 |
Correct |
1 ms |
496 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
768 KB |
Output is correct |
| 2 |
Correct |
3 ms |
824 KB |
Output is correct |
| 3 |
Correct |
3 ms |
828 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
112 ms |
16496 KB |
Output is correct |
| 2 |
Correct |
107 ms |
18516 KB |
Output is correct |
| 3 |
Correct |
114 ms |
20492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
20492 KB |
Output is correct |
| 2 |
Correct |
18 ms |
20492 KB |
Output is correct |
| 3 |
Correct |
23 ms |
20492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
20492 KB |
Output is correct |
| 2 |
Correct |
7 ms |
20492 KB |
Output is correct |
| 3 |
Correct |
7 ms |
20492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
166 ms |
20492 KB |
Output is correct |
| 2 |
Correct |
171 ms |
20492 KB |
Output is correct |
| 3 |
Correct |
171 ms |
20492 KB |
Output is correct |
