diff --git a/src/7/23/T637676d.cpp b/src/7/23/T637676d.cpp
index b050570..136fb0c 100644
--- a/src/7/23/T637676d.cpp
+++ b/src/7/23/T637676d.cpp
@@ -1,44 +1,47 @@
+#include <cstdint>
 #include <iostream>
 #include <vector>
 #include <algorithm>
+
+using ll = int64_t;
 using namespace std;
 
 int main() {
     ios::sync_with_stdio(false);
     cin.tie(0);
 
-    int n, m, k;
+    ll n, m, k;
     cin >> n >> m >> k;
     vector<string> v(n);
-    for (int i = 0; i < n; i++) {
+    for (ll i = 0; i < n; i++) {
         cin >> v[i];
     }
 
-    vector<int> dp(k + 1, 1e9);
+    vector<ll> dp(k + 1, 1e9);
     dp[0] = 0;
 
-    for (int i = 0; i < n; i++) {
-        vector<int> a;
-        for (int j = 0; j < m; j++) {
+    for (ll i = 0; i < n; i++) {
+        vector<ll> a;
+        for (ll j = 0; j < m; j++) {
             if (v[i][j] == '1') {
                 a.push_back(j);
             }
         }
-        int p = a.size();
-        vector<int> f(p + 1, 0);
+        ll p = a.size();
+        vector<ll> f(p + 1, 0);
 
         if (p == 0) {
-            vector<int> ndp = dp;
+            vector<ll> ndp = dp;
             dp = move(ndp);
             continue;
         }
 
         f[p] = 0;
-        for (int t = 0; t < p; t++) {
-            int b = p - 1 - t;
-            int mval = 1e9;
-            for (int x = 0; x <= t; x++) {
-                int cost = a[b + x] - a[x] + 1;
+        for (ll t = 0; t < p; t++) {
+            ll b = p - 1 - t;
+            ll mval = 1e9;
+            for (ll x = 0; x <= t; x++) {
+                ll cost = a[b + x] - a[x] + 1;
                 if (cost < mval) {
                     mval = cost;
                 }
@@ -46,9 +49,9 @@ int main() {
             f[t] = mval;
         }
 
-        vector<int> ndp(k + 1, 1e9);
-        for (int j = 0; j <= k; j++) {
-            for (int t = 0; t <= min(p, j); t++) {
+        vector<ll> ndp(k + 1, 1e9);
+        for (ll j = 0; j <= k; j++) {
+            for (ll t = 0; t <= min(p, j); t++) {
                 if (dp[j - t] != 1e9) {
                     if (dp[j - t] + f[t] < ndp[j]) {
                         ndp[j] = dp[j - t] + f[t];
@@ -59,7 +62,7 @@ int main() {
         dp = move(ndp);
     }
 
-    int ans = *min_element(dp.begin(), dp.end());
+    ll ans = *min_element(dp.begin(), dp.end());
     cout << ans << endl;
 
     return 0;